The Portland Vase

A Roman cameo glass vessel of about AD 5 to 25, cobalt blue under an opaque white overlay cut back in relief, 24.5 centimetres high. It is the most celebrated surviving object in a material of which perhaps fifteen more or less complete pieces exist anywhere in the world. Nobody knows who made it, where it was found, when exactly it was made, or what the seven figures on it are doing.

It reached the modern world already incomplete, its pointed base gone and a cameo disc cut from somebody else's Roman relief fitted underneath in its place. On 7 February 1845 a drunk visitor to the British Museum threw a piece of Persepolis sculpture through its case and reduced it to a heap of fragments; he could be prosecuted only for the case, because the statute on wilful damage reached objects worth up to five pounds and no further. It has been reassembled three times since, in 1845, in 1948 to 1949 and in 1988 to 1989, and each attempt left pieces out.

Its fame is not Roman. It is Staffordshire. Josiah Wedgwood borrowed it in 1786, spent years failing to copy it in jasperware, and succeeded in 1790. The copies went everywhere. That is why almost every photograph captioned Portland Vase online shows a piece of English pottery rather than the Roman glass in Bloomsbury.

The object is not intact, and never was in modern times

A Roman two-handled vessel in cobalt-blue glass, 24.5 centimetres high, 17.7 centimetres across at its widest and 9.3 centimetres at the mouth. Over the blue lies an opaque white glass layer which has been cut back in relief to leave seven human figures, a large sea-serpent and two bearded, horned heads standing proud of the dark ground. The cutting is at the standard of hardstone cameo work, not of glass decoration, which is the single strongest piece of evidence about who made it.

It is also incomplete, and that matters more than the literature usually admits. The vessel has lost its pointed base. What it has instead is a separate cameo glass disc showing a young head in a Phrygian cap, called Paris or Priam depending on the writer, cut down from a larger composition and fitted underneath as a foot. The disc differs from the vase in colour, in composition and in style. The mouth of the vessel is unevenly cut. The two pieces have been associated since at least the early seventeenth century, and the British Museum has displayed them apart since 1845.

So the thing that entered the historical record was already an assembly: a truncated Roman amphora closed with a fragment of somebody else's Roman relief, possibly converted in antiquity, possibly much later. Every subsequent event in this record happened to an object that was not whole when it started.

Nobody has read the frieze

Two scenes run round the body, divided by the bearded horned masks set under each handle. On one side a young man steps out from a structure towards a half-naked woman seated on the ground with a snake-like creature across her lap; Eros flies above with bow and torch; a bearded man stands between two trees, chin resting on his hand. On the other, three figures sit among rocks beneath a single tree: a young man beside a column, a woman with one arm raised holding a torch pointing down, a half-draped woman with a sceptre or staff.

All but one of the figures carry no identifying attribute. That is the whole difficulty, and it has not moved in four centuries. The published readings divide into two families. The mythological family favours the marriage of Peleus and Thetis, with Dionysos greeting Ariadne as the leading alternative. The dynastic family has proposed Augustus conceived by Apollo in the form of a serpent, Mark Antony lured by Cleopatra and her asp, and Octavia abandoned by Antony and seated between her brother and Venus Genetrix. The second scene has been read as Hecuba dreaming of the Judgement of Paris, as Ariadne stranded on Naxos, and as Olympias dreaming of the conception of Alexander. Erasmus Darwin, who received one of the earliest Wedgwood copies, read the whole thing as an Eleusinian allegory of death and rebirth.

There is no agreement even on whether the two sides are one continuous story or two separate ones. The most careful public statement is the British Museum's own: the subject is love and marriage with a mythological cast, and the sea-serpent places it in a marine setting, so it may have been a wedding gift. In December 2025 Filippo Coarelli argued in the Journal of Roman Archaeology for the wedding of Peleus and Thetis combined with the afterlife of Achilles. That is the newest reading available. It is a contribution, not a conclusion.

How it was made is an open technical argument

The standard account, and the one the British Museum gives, is the dip-overlay method. An elongated bubble of blue glass was gathered on the blowpipe and partly dipped into a crucible of molten white glass, and the two were then blown together as one body. Once cool, the white layer was cut away with the tools and the patience of a gem engraver to leave the relief. The alternative within the blowing hypothesis is casing, in which a blank of the background colour is placed inside a hollow blank of the overlay colour and the two are fused and blown. Experimental work by William Gudenrath and David Whitehouse recreated the vase on the dip-overlay model and supports it.

Against this stands a minority position that is not dead. The German researcher Rosemarie Lierke argued from the 1990s that Roman cameo glass was not blown and cold-cut at all but moulded, with the white layer introduced as glass powder. Her case was long dismissed for want of physical evidence. In 2017 Richard Whiteley of the Australian National University put a Roman cameo glass fragment from the ANU Classics Museum through a computed tomography scanner and reported bubble configurations inconsistent with blowing, cold working marks on the surface, a bubble pattern suggesting pressing and turning, and blue glass mixed into granulated white specks. He presented the finding at a historical glassworks conference at the British Museum in October 2017 and described the process as a form of pate de verre.

This record does not adjudicate. It notes that the object at the centre of the argument has been reassembled three times, which complicates any argument from its surface, and that Whiteley's evidence comes from a different fragment rather than from the vase itself. What both camps agree on is the cost. The nineteenth-century attempt to reproduce the vase in glass was so laborious that the original is generally reckoned to have taken its cutter no less than two years.

The findspot was demolished in 1909 and revived in 2025

Until the early twentieth century nobody doubted where the vase came from. The account, transmitted by Pietro Santi Bartoli, was that it was found in 1582 inside a sarcophagus decorated with scenes from the story of Achilles, in the great burial mound known as the Monte del Grano at the fourth mile of the via Tusculana outside Rome. The mound was identified as an imperial tomb.

In 1909 Henry Stuart Jones ruled the provenance out, and for more than a century the standard position has been that the Monte del Grano story is unproven and probably a seventeenth-century embellishment. In December 2025 Filippo Coarelli re-examined the monument, identified it as the tomb of Alexander Severus, and concluded that the report of the vase coming from the Monte del Grano sarcophagus is authentic after all.

Note what this does not settle. The Monte del Grano is a third-century tomb; the vase is Augustan or close to it. A first-century vessel deposited in a third-century burial is entirely possible, and is one of the reasons the dating and the findspot have to be argued separately. Anyone who reads the findspot as a dating argument is making a mistake this object punishes.

The first solid ownership record is Roman and early modern. The vase is documented in the collection of Cardinal Francesco Maria Del Monte by about 1601. In 1626 it passed to Cardinal Francesco Barberini for 500 scudi, and it stayed with the Barberini for roughly 150 years. It was the Barberini Vase before it was the Portland Vase, and eighteenth-century sources call it that.

Byres, Hamilton and the Duchess

In 1780 the Scottish antiquarian and dealer James Byres, resident in Rome, acquired the vase from the Barberini. The reported mechanism is that it was sold to settle the gambling debts of Donna Cordelia Barberini-Colonna. Late in 1782 Byres sold it for 1,000 pounds to Sir William Hamilton, British plenipotentiary at Naples, collector, volcanologist and the most effective English conduit for Italian antiquities of his generation. Some accounts place Hamilton's acquisition in 1778 or 1783; this record follows Milo Keynes and flags the conflict.

In 1784 Hamilton sold it to Margaret Cavendish Bentinck, Dowager Duchess of Portland, for 1,800 guineas, after what Keynes describes as a secret and delicate negotiation. The Duchess was one of the great collectors of the century and kept a private museum at her house in Privy Garden, Whitehall. She had it for about a year. She died in July 1785.

Her collection was auctioned by Mr Skinner and Co over thirty-eight days from 24 April to 7 June 1786, at the house in Privy Garden, by order of the acting executrix. The vase was lot 4155, on the final day. It made 980 guineas, or 1,029 pounds, bought by a Mr Tomlinson bidding for the third Duke of Portland, the Duchess's son, who was Prime Minister in 1783 and again from 1807. The vase went back into the family that had owned it for a year and gave it the name it has carried ever since.

Three days later, on 10 June 1786, the Duke and Josiah Wedgwood signed an agreement lending it to Etruria to be copied.

Wedgwood made the vase famous, and made it dangerous to photograph

Wedgwood did not copy the vase in glass. He copied it in jasperware, his own dense unglazed stoneware, in a blue-black body with applied white reliefs. The technical problems were severe: cracking, blistering, and sprigged reliefs lifting off in the kiln. Accounts of how long it took differ, giving three years, four years, or nearly five years of experiment; the range is itself a fact worth recording. Erasmus Darwin received what Wedgwood considered the first perfect copy in October 1789.

The first edition was shown privately between April and May 1790, and demand was such that Wedgwood limited it by printing only 1,900 admission tickets. It then went into his public London showrooms. Between October 1789 and January 1795 he sold roughly thirty-one copies, at prices running from 50 guineas down to 30. First-edition copies are now in the Victoria and Albert Museum, the Fitzwilliam, the British Museum's Department of Britain, Europe and Prehistory, the Indianapolis Museum of Art and elsewhere. Wedgwood's own verdict on the project was blunt and has stuck to his reputation ever since.

In glass, the copy came a century later. Philip Pargeter of the Red House Glassworks at Wordsley produced a blue and white blank and commissioned the carver John Northwood, who worked on it for more than three years with steel tools of his own design and finished in 1876, against a standing offer of 1,000 pounds from Benjamin Richardson to any glassmaker who could reproduce the Roman original. That copy is now at the Corning Museum of Glass. Sources differ over exactly which man did which part of the work, and both names belong on it. Northwood's success launched the English cameo glass revival.

The consequence for anyone cataloguing this object is practical and severe. Wedgwood copies, later Wedgwood editions, Victorian glass replicas and modern reproductions exist in the hundreds, they are photographed constantly, they are in dozens of museums, and they are frequently captioned simply Portland Vase. A picture of a black or blue jasperware vase with white figures is not this object. This record carries one such copy deliberately, labelled as what it is.

7 February 1845, and the five pound ceiling

The fourth Duke deposited the vase at the British Museum in 1810, on loan and not as a gift; secondary accounts say the immediate cause was a guest breaking the base. It sat in a case in Bloomsbury for thirty-five years.

On the afternoon of 7 February 1845 a young man who gave his name as William Lloyd waited for the attendant to move away, picked up a piece of basalt sculpture from Persepolis, and threw it through the case. The vase came apart. Contemporary and later accounts give the number of pieces as well over eighty, as 189, and as about two hundred; the figure most often repeated is 189, and this record does not pretend the count is settled.

Lloyd was not his name. He was a Dubliner named Mulcahy, reported as a former Trinity College student who had left Ireland after family trouble and had been drinking for about a week. He was charged with wilful damage. His counsel then found the hole: the statute under which he was charged reached objects valued at up to five pounds and no further, and there was no provision covering the destruction of an object of the vase's kind. He was therefore convicted of breaking the display case, not the vase inside it, and fined three pounds with two months in prison in default.

He could not pay, and went to prison. An anonymous benefactor settled the fine and he was released. The Duke of Portland declined to pursue him in the civil courts, which spared his family. A 1954 account has him afterwards working as a scenic painter. Beyond that almost nothing is known of him. The most famous piece of Roman glass in the world was destroyed, and the maximum legal consequence available to the state was three pounds for a pane of glass.

Three restorations, and what each one left out

The first was immediate. John Doubleday reassembled the vase over the spring and summer of 1845 and finished on 10 September, and he signed the work by fitting a small disc under the foot inscribed with the date of the breaking, the date of the restoration and his name. Thirty-seven small fragments would not go back. They were set aside, and a box maker named Gabb was commissioned to make a case with thirty-seven compartments, one to a fragment.

The box was never collected. The museum man who ordered it died; Gabb died; Gabb's executrix eventually asked a Mr Croker of Putney to find out what the pieces were. In 1948 Croker brought the box to Bernard Ashmole, Keeper of Greek and Roman Antiquities, who recognised them. The Portland Vase had spent a century missing thirty-seven of its own fragments because a joiner's bill went unpaid.

The second restoration followed straight on. Doubleday's adhesive had aged and discoloured, and the vase was taken apart in mid-November 1948 and rebuilt by the conservator J. W. R. Axtell using animal glue and a wax filler, finishing on 2 February 1949. Of the thirty-seven recovered fragments Axtell managed to place three. Thirty-four stayed in the box.

The third began on 1 June 1988. Axtell's adhesive had yellowed in turn and the vase had become too fragile to travel. Nigel Williams and Sandra Smith dismantled it completely, working with roughly 230 fragments, tested a large number of epoxy resins and settled on Hxtal NYL-1, chosen for its resistance to yellowing under prolonged light. The work was overseen by David Akehurst and filmed. All but a few small splinters were integrated, and the remaining gaps were filled with tinted blue or white resin. The vase returned to display on 1 October 1989. The reconstruction was designed to hold for at least a century.

Three restorations, three adhesives, three sets of leftovers. The object now on display is a Roman vessel held together by twentieth-century epoxy, standing on a Roman disc that does not belong to it, signed underneath by a Victorian restorer.

A loan for one hundred and thirty-five years

The vase was in the British Museum from 1810, but it did not belong to it. It was the property of the Dukes of Portland, on deposit, and the museum's position was that of a custodian who could be given notice.

Notice came. Between 1929 and 1932 the sixth Duke, William Cavendish-Bentinck, withdrew it and offered it at Christie's in London. It failed to reach its reserve and went back to Bloomsbury. Neither the reserve figure nor the highest bid appears in the sources consulted for this record, and that is a real gap: it is the only occasion on which the open market was asked to price this object, and the number is not in general circulation.

In 1945 the British Museum bought it outright from the seventh Duke, with the aid of a bequest from James Rose Vallentin, and registered it as 1945,0927.1. The purchase price is likewise not published in the sources consulted here.

The sequence is worth stating plainly, because it is the shape of the whole object's modern history. The vase was smashed in 1845 while the museum did not own it. It was restored twice while the museum did not own it. It was nearly sold out from under the museum in 1929. The institution that is now inseparable from it in the public mind held it for one hundred and thirty-five years on terms it did not control.