Reliquaries in Christian Art

The reliquary, the precious case of relics, is one of the highest grounds of Christian art: from the shrine to the arm reliquary, from the Majesty of Conques to the Shrine of the Three Kings at Cologne and the Sainte-Chapelle, sacred goldsmith work turns gold and enamel into a profession of faith in the resurrection of the body.

Ignispedia

A reliquary is the precious object that contains, protects and presents a relic — a saint's body, a fragment of that body, or an object connected with his or her life. But it is never a mere container. From the goldsmith's casket to the golden statue, from the silver arm raised in blessing to the entire cathedral conceived as a glass case, the reliquary is one of the highest fields of experimentation in Western Christian art. For a thousand years, the Church reserved for these objects its rarest metals, its hardest stones and the genius of its finest goldsmiths.

The reason for this outpouring of splendour can be summed up in one principle: the case speaks of what it shelters. What is believed to be inhabited by the power of God is not locked away in rough wood; it is surrounded with the most precious things the earth affords, so as to confess, through matter, an invisible dignity. The reliquary is thus a profession of faith in gold and enamel: faith in the holiness of the body it guards, faith in the resurrection of the flesh, faith in the communion that binds Heaven and earth.

This article does not deal with the debate over the legitimacy of venerating relics — that is the subject of Relics: An Idolatry of the Dead? and Why Venerate Relics?. It looks at the reliquary as an object of art and liturgy: its birth around the altar, its grammar of forms, the techniques of the sacred goldsmith, its masterpieces — the Majesty of Conques, the Shrine of the Three Kings at Cologne, the enamels of Limoges, the Sainte-Chapelle, the Holy Thorn of John, Duke of Berry — and the theology of beauty that animates them.

What is a reliquary, as an object of art?

The word comes from the Latin reliquiae, "what remains". The reliquary is therefore, literally, that which keeps the remains. But between the simple box and the object of worship, art has introduced a difference of nature: the reliquary does not merely preserve, it honours, designates and reveals.

From the martyr's coffin to sacred goldsmith work

Sarcophagus of Junius Bassus (d. 359), Treasury of St Peter’s, Vatican: an early Christian marble sarcophagus of the kind from which the martyr’s shrine descends — Sailko, Wikimedia Commons, CC BY-SA 3.0.

The oldest Christian form of reliquary is the shrine — from the Latin capsa, "box", "case"[1]. Originally, it recalls the primitive coffin of the martyrs: a chest, often shaped like a small sarcophagus, sheltering their body preserved whole. The shrine appears in the earliest centuries around venerated tombs, then develops from the 7th century onwards into an ever more imposing piece of goldsmith work.

Very early on, this chest ceases to be merely functional. It is clad in plates of gold and silver, adorned with stones, engraved with scenes. The gesture is deliberate: the case must be worthy of the treasure. Where an ordinary tomb disappears beneath the earth, the saint's shrine rises above the altar, visible, radiant, made to be gazed upon and carried in procession.

Containing, protecting… and showing

Rhenish barrel-shaped rock-crystal reliquary, Walters Art Museum: the transparent stone shows the relic instead of hiding it — Walters Art Museum, Wikimedia Commons, Public domain.

Three functions overlap in every reliquary, and medieval art brought each of them to its peak:

  • Containing: enclosing the sacred fragment in a sealed theca, sheltered from time and theft.
  • Protecting: guaranteeing authenticity with a certificate, an inscription, a seal — the Dicastery for the Causes of Saints' Instruction (2017) still requires a certificate of authenticity before a relic may be exposed for veneration[2].
  • Showing: and it is here that the most inventive art is born. For a hidden relic edifies no one. The whole effort of the goldsmiths consisted in making visible what had to remain intact — hence the invention of transparent rock crystal, glass "windows", and elaborate monstrances.

This tension between hiding in order to preserve and showing in order to stir veneration is the secret engine of the reliquary's formal history. It explains why a single object can be at once a strongbox and a display case, a miniature tomb and a theatre of light.

The first reliquary is the altar itself

Before it was a casket carried at arm's length, the relic first had a fixed liturgical case: the altar. The practice of celebrating the Eucharist above the martyrs' tomb is very ancient, and it is rooted in a vision from Revelation:

"I saw under the altar the souls of those who had been slain for the word of God and for the witness they had borne." — Revelation 6:9[3]

From this verse, tradition derived a rule: an altar stands upon relics. Pope Felix I (269–274) is reported, according to the Liber Pontificalis, to have encouraged the custom; the Fifth Council of Carthage, in 401, made it official through its canon Item placuit, requiring relics beneath the altar[4]. The 1983 Code of Canon Law maintains this thousand-year-old tradition in canon 1237:

"The ancient tradition of placing relics of martyrs or other saints under a fixed altar is to be preserved, according to the norms given in the liturgical books." — Code of Canon Law, can. 1237 § 2[5]

Bernini’s baldachin over the papal altar of St Peter’s basilica: the bronze canopy raised above the tomb of the apostle, the altar as reliquary — Jebulon, Wikimedia Commons, CC0.

The reliquary, before it was a jewel, was therefore an altar stone. This liturgical dimension — the saint who "carries" the Mass, the martyr's sacrifice united to Christ's — links our subject directly to the art of the altar, treated in The Symbolism of the Altar. Every reliquary extends this gesture: it lifts out of the stone, and makes mobile, the body that sanctifies the place.

Why such splendour? The theology of precious matter

Before describing the forms, we must answer the objection every visitor to a cathedral treasury feels: why so much gold for a few bones? The medievals' answer is neither naive nor cynical. It rests on a coherent theology of matter.

The saint's body, temple of the Spirit

For the Christian faith, the body is not refuse discarded by the soul. It is, in St Paul's words, "the temple of the Holy Spirit" (1 Corinthians 6:19), destined to rise again. Honouring a saint's body with a golden case confesses this dignity: what has been inhabited by God and will be glorified deserves better than dust. The reliquary's luxury is a visible anticipation of the resurrection of the flesh. It is also why the Byzantines, and then the West, refused to treat the relic as a macabre leftover: it is a seed of glory.

Anagogy: ascending to the divine through beauty

Abbot Suger as donor at the foot of the Annunciation panel, Childhood of Christ window, Saint-Denis: the abbot who taught that precious matter lifts the mind to God — Jacques MOSSOT, Wikimedia Commons, CC BY-SA 4.0.

The most explicit theorist of this aesthetic was Suger, abbot of Saint-Denis (1081–1151), builder of the choir that heralds the Gothic. In his treatise De Administratione, he justifies at length the treasures he commissions, not from a taste for pomp, but through a spiritual ascent triggered by material beauty:

"When — for love of the beauty of the house of God — the charm of the many-coloured stones has called me away from external cares… then it seems to me that I see myself dwelling, as it were, in some strange region of the universe… and that, by the grace of God, I am transported from this lower world to the higher world, in an anagogical manner." — Suger of Saint-Denis, De Administratione, XXXIII[6]

The idea is decisive for understanding the whole art of the reliquary: precious matter is not an end but a springboard. Gold, garnet and crystal lead the gaze de materialibus ad immaterialia, "from the material to the immaterial". The most sumptuous reliquary aims to be the most transparent — it shines in order to carry the gaze beyond itself.

Reusing antiquities: baptising the world's treasure

One practice illuminates this theology: medieval goldsmiths reused pagan or secular objects without scruple. Roman cameos, antique intaglios, Sasanian crystal vessels, gems engraved with Greco-Roman divinities came to be set into Christian shrines. The Majesty of Conques thus bears antique gems and cameos of every provenance and period[7]. The gesture is no distraction: it is a symbolic conquest. The finest achievements of the ancient world are placed at the saint's service, like the nations bringing their treasures into the New Jerusalem (Revelation 21:24–26). The reliquary becomes a miniature image of all beauty gathered around God.

A grammar of forms

Arm reliquary of Charlemagne, reverse side, Aachen cathedral treasury: a silver arm raised in blessing, a speaking reliquary whose form declares its relic — Armin Kleiner, Wikimedia Commons, CC BY-SA 4.0.

It is in the variety of its forms that the reliquary deploys its purest creativity. Instead of a single type of box, the West invented a whole visual language, in which the shape of the case converses with the nature of the relic.

The shrine: a tomb become architecture

The shrine remains the queen of forms. But from the Romanesque period onwards, it stops imitating the sarcophagus and starts imitating the church. A gabled lid like a roof, walls rhythmically articulated with arcading, gablets, turrets: the great shrine becomes a miniature basilica. The Shrine of the Three Kings at Cologne is the supreme example, "designed in the form of a miniature basilica"[8]. The message is limpid: the saint already dwells in the House of God; his reliquary is its golden model.

This assimilation of the reliquary to a building has a scholarly name: microarchitecture. It culminates in the Gothic, when monstrances and shrines bristle with pinnacles, gables and buttresses like true scaled-down cathedrals — a theme continued in The Architecture of a Cathedral.

"Speaking" reliquaries: the form declares the relic

From the 11th–12th century onwards, a striking family appears: morphological reliquaries, which German art historians dubbed redende Reliquiare, "speaking reliquaries"[9]. Their principle: the case takes the shape of the limb it contains — an arm for a humerus, a head for a skull, a foot for a foot. The relic "announces" itself at first glance.

The historian Cynthia Hahn, the leading scholar of reliquaries, has however introduced an important nuance: these objects do not always contain the bone their shape announces — an arm reliquary may hold a fragment of shin or pelvis. Their function is therefore not only to "indicate" a content, but to make the saint present and active in the liturgy[10]. The form speaks less of the content than of the role: an arm that blesses, a head that gazes.

The arm reliquary: a hand still blessing

The arm reliquary, particularly prized from the 12th to the 15th century, shows a forearm of silver or gilt silver, hand raised, two fingers lifted in the gesture of blessing. Hahn notes that many medieval texts describe clerics blessing the faithful with these reliquaries: through his relic, the saint continues to trace the sign of the cross over his people[11]. The object is no inert memento; it is a living liturgical instrument, brandished at the elevation, offered to be kissed, carried at the head of processions.

Head and bust: restoring a face to the saint

Head reliquaries (from the Latin caput, head) and bust reliquaries enclose all or part of a saint's skull and restore to him or her a face. It is one of sacred art's boldest inventions: giving features back to one of whom only a bone remains, making him gaze upon the living once more. The Majesty of Conques, which contains St Faith's skull, is its Carolingian archetype; the bust reliquary, multiplied in the Gothic and then the Baroque age, would be its theatrical fulfilment.

The staurotheke: case of the True Cross

An exceptional relic calls for its own form. Fragments of the True Cross are kept in staurothekes (from the Greek stauros, cross), often shaped as a cross or a folding triptych, heirs to the great Byzantine art of cloisonné enamel. The Stavelot Triptych, a 12th-century Mosan masterpiece now in New York, sets two small Byzantine staurothekes in a Western enamelled mount: a double treasure, a double virtuosity[12]. On the question of the authenticity of these Passion relics, see The Blood-Type Improbability of the Passion Relics.

The reliquary monstrance: showing through transparency

Flagellation Reliquary, Venice, second half of the 15th century, Louvre OA 5555 — Tangopaso — Wikimedia Commons, public domain.

In the 13th–14th century, the decisive invention is the reliquary monstrance (from the Latin ostendere, to show), sometimes simply called a monstrance. Its heart is a cylinder of rock crystal or glass, mounted on a foot, which lets the relic be seen without being touched[13]. The development of these objects is directly linked to progress in working rock crystal, cut into transparent flasks or cylinders.

Around this cylinder, the goldsmith deploys an openwork Gothic architecture: arcades, pinnacles, statuettes of the Virgin and the saints. The same form would soon serve to expose the consecrated host at Corpus Christi, instituted in the 13th century: reliquary and Eucharistic monstrance are siblings, born of the same desire to show the sacred. This is one of the points where the art of the reliquary meets the heart of the liturgy.

Pendants, encolpia and portable reliquaries

Not every relic belongs on an altar. A more intimate devotion multiplied portable reliquaries: the encolpion (from the Greek en kolpô, "on the breast"), a reliquary medallion hung around the neck; the phylactery, a small pectoral reliquary; the miniature shrine carried on journeys. These objects, often in enamelled gold set with gems, move the reliquary from the monumental register to that of the devotional jewel — without losing any of the goldsmith's rigour.

The sacred goldsmith's techniques

With the portable altar and the Gospel-book binding, the reliquary is the great laboratory of medieval goldsmith work. Almost every precious technique of the Middle Ages finds its most demanding employment there.

Gold, silver and stones: the vocabulary of the precious

Verdun Altar by Nicholas of Verdun (completed 1181), Klosterneuburg: forty-five enamelled plaques, the summit of Mosan champlevé enamel — C.Stadler/Bwag, Wikimedia Commons, CC BY-SA 4.0.

The foundation remains precious metal: solid gold for royal pieces, gilt silver (vermeil) for the great majority, gilt copper for mass-produced series. On this ground, the goldsmith sets precious and semi-precious stones, pearls, antique cameos, working the metal in repoussé (relief hammered from behind), chasing, filigree (soldered gold wires) and niello (black inlay in the metal). Each gem carries a symbolic as well as an aesthetic value: sapphire for heaven, ruby for the blood of martyrdom, pearl for purity.

Enamel: Byzantine cloisonné, Mosan and Limoges champlevé

Enamel — coloured glass powder fused by fire onto metal — is the great business of medieval reliquaries. Two techniques dominate:

TechniquePrincipleCentre and periodEffect
Cloisonné enamelFine soldered gold partitions outline the design; enamel is poured between themByzantium, Ottonian art (10th–11th c.)Jewel-like colours, lines of gold, imperial sumptuousness
Champlevé enamelCells are hollowed out of a thick copper plate and filled with enamelMeuse valley, then Limoges (12th–13th c.)Deep blue surfaces, suitable for serial production
Limburg Staurotheke, case of a fragment of the True Cross: Byzantine goldsmith work set with cloisonné enamel — Markus Paul Engert, Wikimedia Commons, CC BY-SA 4.0.

The rise of champlevé enamelling on copper is one of the great facts of Romanesque goldsmith work[14]. Two regions excelled in it: the Meuse valley (Mosan art), of scholarly finesse, and the Limousin, which from the 1170s onwards quite literally industrialised production and exported its shrines across Europe.

Rock crystal and ivory

Two noble materials complete the palette. Rock crystal — pure quartz, hard to cut — is prized for its transparency: it serves as a window, a flask, a cylinder through which the relic lets itself be seen, anticipating the monstrance. Ivory, carved into plaques or statuettes, clothes certain caskets and reliquaries, an inheritance of Carolingian and Byzantine art. Both express the same intention: joining to gold rare materials, translucent or immaculate, worthy of what they surround.

Great centres and masterpieces

The history of the art reliquary can be read in a handful of major works, marking a thousand years of creation from the Carolingian treasury to the Baroque theatre.

The Golden Majesty of St Faith at Conques (9th–11th century)

Majesty of St Faith at Conques — 自由馴鹿 (ZiYouXunLu), edited by MenkinAlRire — Wikimedia Commons, CC BY-SA 3.0.

At the heart of the treasury of the abbey church of Conques, in Rouergue, enthroned stands the Majesty of St Faith: a statue-reliquary some 85 cm tall, made of a wooden core clad in gold and gilt silver, heightened with enamels, gems and antique cameos, the eyes of dark blue glass[15]. It encloses the saint's most precious relic — her skull. St Faith, a young martyr of Agen in the 3rd century, was "translated" to Conques by the monks in the 9th century; her Majesty, dated between the 9th and the 11th century, is the only major statue-reliquary of post-Carolingian Gaul to have come down to us[16].

Its sculptural power is such that it disconcerts. Around 1013, the cleric Bernard of Angers, trained at the school of Chartres, visited Conques and confessed in his Liber miraculorum sanctae Fidis to having first seen in these golden statues something resembling a pagan idol, a Venus or a Diana — before being converted, through miracles, to the veneration of the saint[17]. The testimony is precious: it shows, from inside the Middle Ages, an acute awareness of the boundary between the image and the idol — a boundary the Church has always maintained, and which is analysed in Icons, Idols and Sacred Images: What Is the Difference?.

Mosan art: Nicholas of Verdun and Godfrey of Huy

The Meuse valley — between Liège, Huy, Maastricht and Stavelot — was, in the 12th–13th centuries, one of the summits of European goldsmith work. Mosan art combines a scholarly science of draughtsmanship, inherited from Antiquity and Ottonian art, with mastery of champlevé enamel[18].

Two names dominate it. Godfrey of Huy (or of Claire), goldsmith and enameller active around Stavelot, long credited with staurothekes and shrines of exceptional finesse. And above all Nicholas of Verdun, the greatest of all, whose work — the Klosterneuburg ambo (1181) in Austria, then the Shrine of the Three Kings — no longer belongs to the Mosan tradition alone, but to the European art of around 1200[19]. With him, figures recover an almost antique drapery, volume and presence: goldsmith work becomes great sculpture again.

The Shrine of the Three Kings at Cologne (c. 1180–1230)

Detail of the figures and arcading of the Cologne shrine — Anteeru — Wikimedia Commons, CC BY-SA 3.0.

It is, by size as by sophistication, the largest reliquary of the Western Middle Ages[20]. Begun around 1180–1190 by Nicholas of Verdun and completed by the Cologne workshops around 1230, the Shrine of the Three Kings measures some 2.20 m long, 1.10 m wide and 1.53 m high. Designed as a three-aisled basilica in gold and silver, set with enamelled plaques, gems and hundreds of figures, it houses the bones of the Three Kings, transferred from Milan to Cologne in 1164 by Archbishop Rainald of Dassel[21].

Its façade orchestrates the whole history of salvation: prophets and apostles, scenes from the life of Christ, and, at the centre, the Adoration of the Magi — where the kings bring their gold, frankincense and myrrh, as the shrine itself offers Christ all the gold in the world. It is this shrine that made Cologne, from the Middle Ages onwards, one of Europe's greatest pilgrimage destinations.

The Work of Limoges and the Thomas Becket shrines

Thomas Becket shrine, Limoges, Musée de Cluny, Cl. 22596 — Marie-Lan Nguyen — Wikimedia Commons, public domain.

If Mosan art is the aristocracy of the reliquary, Limoges is its great diffusion. From the 1170s onwards, the Limousin workshops produced quantities of shrines in champlevé-enamelled gilt copper — an oak core clad in engraved, chased, gilt copper plaques filled with deep blue enamel. Some seven hundred shrines of the "Work of Limoges" have come down to us[22].

The most illuminating case is that of St Thomas Becket, Archbishop of Canterbury murdered in his cathedral in 1170 and canonised as early as 1173. His lightning devotion sparked serial production: fifty-two Limoges shrines depicting his murder survive, made between about 1185 and 1220 — the largest iconographic group in the whole corpus[23]. Several are now in the Louvre[24]. The reliquary here becomes a medium: through these cases scattered across Europe, the image of the martyrdom travels and the cult spreads. Goldsmith work becomes evangelisation.

The Sainte-Chapelle: a reliquary of architecture

The upper chapel of the Sainte-Chapelle in Paris — Ulemas7 — Wikimedia Commons, CC BY-SA 4.0.

The most vertiginous gesture is that of Louis IX, St Louis. In 1239, the Latin emperor of Constantinople, Baldwin II, desperate for funds, ceded him the Crown of Thorns, followed by other Passion relics. The price was colossal: the Crown alone is said to have cost 135,000 livres tournois, about half the annual revenues of the French Crown[25]. On 19 August 1239, barefoot and in a simple tunic, the king himself carried the relic to Paris.

To house this treasure, Louis IX had the Sainte-Chapelle (1242–1248) raised within his palace on the Île de la Cité: no longer a casket, but a reliquary on the scale of a building. Walls dematerialised into expanses of stained glass, vaults of starry azure, stone structure reduced to a minimum: the upper chapel is a shrine of glass and light, which itself sheltered the goldsmith's Grande Châsse bearing the relics. It is the fulfilment of Suger's logic: making an entire building a luminous case — the art described in Gothic as a Theology of Light.

One enters the Sainte-Chapelle as one enters a reliquary: stone fades, glass becomes gem, and the whole architecture has no other function left than to display what it shelters.

John, Duke of Berry's Holy Thorn Reliquary (c. 1390–1397)

Holy Thorn Reliquary, British Museum — Geni — Wikimedia Commons, CC BY-SA 4.0.

At the end of the Gothic period, the art of the reliquary reaches a jeweller's refinement. The Holy Thorn Reliquary, made between 1390 and 1397 for John, Duke of Berry, the greatest collector of his age, is its jewel. Kept today at the British Museum (Waddesdon Bequest), it is made of enamelled gold, sapphires, rubies, pearls and rock crystal, and encloses a thorn from the Crown acquired by St Louis[26].

Its virtuosity lies in a recent technique, enamel en ronde bosse (round enamel): full-relief figurines coated in opaque white enamel, of an almost sculptural modelling[27]. Around the thorn unfolds an entire miniature Last Judgement: Christ the Judge between the Virgin and John the Baptist, the twelve apostles, God the Father at the summit, and angels sounding trumpets from the turrets of a golden fortress. The reliquary is no longer merely a case: it is a small eschatological theatre, in which the Passion relic stands at the centre of the end of the world.

Baroque splendours: busts and catacomb saints

Gratian, catacomb saint, Waldsassen basilica — Wolfgang Sauber — Wikimedia Commons, CC BY-SA 4.0.

The Baroque age relaunched, after the Reformation, the art of the reliquary with a new theatricality. Two phenomena mark it. First the multiplication of silver bust reliquaries, with expressive faces, displayed in gilded niches. Then the extraordinary episode of the catacomb saints (Katakombenheilige).

In 1578, the rediscovery of the Roman catacombs brought to light thousands of skeletons held to be those of the first centuries' martyrs. Rome distributed many of them across Catholic Europe — above all the Germanic lands — to replace the relics destroyed by the Reformation and rekindle the faith[28]. Once arrived, these bones were entrusted to nuns who clothed them in silk, gold and precious stones, sometimes crowned or cuirassed, and exposed them in glory in Baroque churches[29]. Strange and fascinating, art here reaches its limit: the skeleton itself becomes a work, arrayed like a heavenly prince — an arresting image of the glory promised to the risen body.

The reliquary as theology in images

Behind the diversity of forms and centuries, a single language can be read. The reliquary is not a mere luxury object: it is a doctrine made visible.

Microarchitecture and the heavenly Jerusalem

Shrine of Charlemagne (Karlsschrein) in Aachen cathedral: a church-shaped shrine of gold, enamel and filigree, a building in miniature — Geolina163, Wikimedia Commons, CC BY-SA 3.0.

The recurrence of church-shaped reliquaries — roof, turrets, arcades, pinnacles — is not decorative. It declares that the saint already dwells in the House of God, and that this House is the heavenly Jerusalem described in Revelation, a city of gold and precious stones (Revelation 21). Every great shrine is a model of Heaven; every Gothic monstrance, a pocket cathedral. The faithful who approach it are invited to see, in the case, the image of the homeland into which the saint has entered.

"Honour passes to the archetype": Trent and regulation

The Council of Trent in session, engraving of 1563: the council whose twenty-fifth session confirmed the veneration of relics — Anonymous, Wikimedia Commons, Public domain.

The Church has never ignored the risk: the beauty of the case can divert to itself the homage due to God. That is why the Council of Trent, in its Session XXV (3–4 December 1563), after reaffirming the legitimacy of venerating relics, demanded the abolition of abuses: no false relics, no superstition, no "provocative" or unseemly beauty in images[30]. Splendour is permitted — willed, even — but ordered: the honour paid to the image, as Nicaea II had already said, "passes to the prototype". The reliquary's gold does not worship the bone; it confesses the God who sanctified that body. On this discernment, see Relics: An Idolatry of the Dead?.

From the medieval reliquary to today

The art of the reliquary is no dead antiquity. The Church continues to enshrine her saints: St Carlo Acutis, canonised on 7 September 2025, whose relics are already distributed to dioceses across the world. Forms have grown more sober — fewer gems, greater restraint — but the gesture remains identical to that of the monks of Conques: giving a worthy case to what is believed to be inhabited by God. As long as the Church believes in the resurrection of the flesh and the communion of saints, she will make reliquaries.

What is held to be a seed of glory is not locked away in rough wood. The reliquary is, in gold and enamel, a profession of faith in the resurrection of the body.

For further reading

Notes and References

  1. Summary based on the article "Reliquaire" (French-language Wikipedia, version consulted in 2026): etymology reliquiae ("what remains"), origin of the shrine (capsa, "box") recalling the martyrs' sarcophagus and appearing in the earliest centuries, typology of forms (shrine, arm-, head- and bust-reliquaries, topical/morphological reliquaries), and the rise of champlevé enamelling on copper, notably in the Limousin from the 1170s onwards.

    1 14
  2. Dicastery (then Congregation) for the Causes of Saints, Relics in the Church: Authenticity and Preservation (instruction of 8 December 2017). The instruction recalls that no relic of a blessed or saint may be exposed for the veneration of the faithful without a certificate of authenticity in due form, and codifies the distinction between significant and non-significant relics.

    2
  3. Revelation 6:9 (English Bible translation). The Greek text reads « hupokátō tou thusiastēríou », "under the altar". It is the classic scriptural foundation for the practice of placing martyrs' relics beneath the altar, the martyr being united to the sacrifice of Christ made present on the altar.

    3
  4. Fifth Council of Carthage (401), canon Item placuit: tradition reports that this canon required relics beneath the altar. The Liber Pontificalis also attributes to Pope Felix I (269–274) the encouragement of celebrating over the martyrs' tombs. Summary based on the "Relique" article (French-language Wikipedia) and liturgical-architecture resources, consulted in 2026.

    4
  5. 1983 Code of Canon Law, canon 1237 § 2: « Antiqua traditio Martyrum aliorumve Sanctorum reliquias sub altari fixo condendi servetur, iuxta normas in libris liturgicis traditas » — "The ancient tradition of placing relics of Martyrs or other Saints under a fixed altar is to be preserved, according to the norms given in the liturgical books."

    5
  6. Suger of Saint-Denis, Liber de rebus in administratione sua gestis (De Administratione), ch. XXXIII, c. 1144–1145. English rendering after Erwin Panofsky's critical edition, Abbot Suger on the Abbey Church of St.-Denis and its Art Treasures, Princeton University Press, 1946. Latin text: « …de materialibus ad immaterialia transferendo… ». This famous passage formulates the "anagogical" aesthetic: the beauty of precious materials lifts the soul toward the divine. Suger began dictating the De Administratione in the winter of 1144–1145, partly to justify his expenditure.

    6
  7. Summary based on the article "Statue reliquaire de Sainte Foy" (French-language Wikipedia, consulted in 2026) and the Conques treasury notice: statuette about 85 cm tall, wooden (yew) core clad in gold, gilt silver, enamels (dark blue glass eyes) and set with gems and antique cameos of every provenance; contains the skull of St Faith, young martyr of Agen (3rd c.) "translated" to Conques in the 9th century; work dated from the 9th to the 11th century, the only Carolingian "majesty" (statue-reliquary) to have come down to us.

    7 15 16
  8. Summary based on the article "Châsse des rois mages" (French-language Wikipedia, consulted in 2026): reliquary of Cologne Cathedral made c. 1180/1190–1230 by Nicholas of Verdun's workshop then the Cologne workshops; dimensions approx. 2.20 × 1.10 × 1.53 m; the largest reliquary of the Western Middle Ages; designed as a miniature basilica, adorned with gold and silver plaques set with gems and enamels; made to receive the bones of the Three Kings transferred from Milan to Cologne in 1164 by Archbishop Rainald of Dassel.

    8 20 21
  9. German term redende Reliquiare, "speaking reliquaries": denotes morphological reliquaries whose form (arm, head, foot) evokes the limb contained. Summary based on medieval art-history literature (notes on speaking reliquaries), consulted in 2026.

    9
  10. Cynthia Hahn, Strange Beauty: Issues in the Making and Meaning of Reliquaries, 400–circa 1204, Pennsylvania State University Press, 2012; and her studies on "speaking" reliquaries. Hahn stresses (a) that arm reliquaries are probably the most produced of the morphological reliquaries because they play a liturgical role (blessing the faithful, sign of the cross); (b) that these objects do not necessarily contain the bone their shape suggests — an arm may hold a fragment of shin or pelvis — showing that they "speak" of the saint's function and presence rather than of a literal content.

    10 11
  11. Stavelot Triptych, Mosan goldsmith work of the mid-12th century (The Morgan Library & Museum, New York). Western mount of champlevé enamels enclosing two small Byzantine staurothekes (True Cross reliquaries) in cloisonné enamel. Summary based on the "Staurothèque" and "Triptyque de Stavelot" articles (Wikipedia) and Mosan art literature, consulted in 2026.

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  12. Summary based on the article "Ostensoir" (French-language Wikipedia) and liturgical-art resources, consulted in 2026: the ancestors of the monstrance appear in the early 13th century as transparent receptacles mounted on a foot, made of rock crystal, allowing the relic (then the host) to be seen; their expansion is linked to progress in cutting rock crystal, and culminates in the 14th–15th centuries, notably in Flanders and Germany, in openwork Gothic architectures.

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  13. Bernard of Angers, Liber miraculorum sanctae Fidis ("Book of the Miracles of St Faith"), c. 1013–1020. The cleric, trained at Chartres, reports his initial suspicion of the golden statue-reliquaries of Auvergne and Rouergue, which an unwary mind might take for pagan idols (a Venus or a Diana), before rallying to their veneration in the face of miracles. A reference testimony on the medieval awareness of the boundary between legitimate image and idol.

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  14. Summary based on the "Art mosan", "Champlevé mosan", "Godefroid de Claire" and "Nicolas de Verdun" articles (Wikipedia / Larousse encyclopedia, consulted in 2026): Mosan art, Romanesque with Carolingian and Ottonian influence, flourished from the 11th to the 13th century in the former diocese of Liège (Meuse valley); Godfrey of Huy (of Claire), goldsmith and enameller active around Stavelot; Nicholas of Verdun, "the greatest", author of the Klosterneuburg ambo (1181) and the Shrine of the Three Kings, whose art already belongs to the "European art of 1200".

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  15. Summary based on the "Émail de Limoges" article (Wikipedia) and the resources of the Centre de la culture du Limousin médiéval, as well as university research (CRIHAM, University of Limoges), consulted in 2026: about 700 shrines of the "Work of Limoges" preserved; the shrines depicting the murder of St Thomas Becket (Archbishop of Canterbury, c. 1118–1170, canonised in 1173) form the largest iconographic group, with some fifty examples (often cited: 52) made between about 1185 and 1220; technique: oak core clad in champlevé, enamelled, chased, engraved and gilt copper plaques.

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  16. Musée du Louvre, entries for the St Thomas Becket shrines in Limoges champlevé enamel (online collections, consulted in 2026) — several Limousin shrines of Becket's martyrdom are kept and documented there (materials, dating to the turn of the 12th–13th centuries).

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  17. Summary based on Vatican News ("La sainte Couronne d'épines à travers les siècles", 2020) and the historical notice of Notre-Dame de Paris Cathedral ("Saint Louis et les reliques de la Passion"): in 1238–1239, the Latin emperor of Constantinople Baldwin II ceded the Crown of Thorns to Louis IX; the reported price is about 135,000 livres tournois (roughly half the Crown's annual revenues); on 19 August 1239, the king carried the relic barefoot to Paris; the Sainte-Chapelle (1242–1248) was built to house the Crown and the Passion relics.

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  18. British Museum, The Holy Thorn Reliquary (Waddesdon Bequest, 1898; collection entry, consulted in 2026): reliquary of enamelled gold set with sapphires, rubies, pearls and rock crystal, made for John, Duke of Berry, containing a thorn from the Crown; Last Judgement iconography (Christ between the Virgin and John the Baptist, the twelve apostles, God the Father, trumpet angels on a fortress-shaped base bearing the duke's arms).

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  19. Smarthistory, "The Holy Thorn Reliquary of Jean, duc de Berry" (consulted in 2026): dating c. 1390–1397, attribution to an anonymous Parisian goldsmith, and use of the recent technique of enamel en ronde bosse (round enamel) — full-relief figures in opaque white enamel over a metal core, heightened with coloured enamels and gilding.

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  20. Summary based on the literature on the Katakombenheilige ("catacomb saints"), notably Paul Koudounaris, Heavenly Bodies, and religious-history entries (consulted in 2026): after the rediscovery of the Roman catacombs in 1578, thousands of skeletons held to be those of martyrs were distributed across Catholic Europe, chiefly Germanic, to replace the relics destroyed during the Reformation; they were clothed in silk, gold and precious stones by nuns, sometimes crowned or cuirassed, and exposed in glory in the Baroque churches of the 17th–18th centuries.

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  21. Council of Trent, Session XXV (3–4 December 1563), Decree on the invocation, veneration and relics of saints, and on sacred images (DS 1821–1825). The decree reaffirms the legitimacy of venerating the bodies of saints and their relics, while demanding the abolition of every abuse: no false relics or illicit gain, and, for images, nothing unseemly or "provocative". The beauty of sacred art is permitted but ordered to edification and free from superstition.

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