The British Museum has revealed the types of items believed to have been stolen from its collection.
The museum said the vast majority of items were from the gems and jewellery collection, and are mostly from Greece and Rome.
Images provided by the museum are only similar to those that are missing, and are still in the collection.
• Classic Greek and Roman gems
• Gold rings
Some of the jewellery is believed to date back to the Late Bronze Age (about 15th to 11th century BC) and the Hellenistic and Roman periods.
Gems, cameos or intaglios were described by the museum as small objects often set in rings or left unmounted.
They can be made of semi-precious stone or glass and can feature mythological scenes, animals or objects which could have been hand carved into them, or produced from a mould.
Back in August, the museum said items from its collection were “missing, stolen or damaged” and a staff member had been sacked.
An estimated 2,000 artefacts had been taken, according to museum chairman and former chancellor George Osborne.
On 16 August, the museum said “60 items have now been returned, with a further 300 identified and due to be returned imminently”.