- Museum number
Intaglio, white topaz; portrait of Leonardo da Vinci.
- Production date
- 1994 (perhaps earlier)
Height: 25 millimetres (approx)
- Not on display
- Acquisition date
- Acquisition notes
- Presented by the artist during a visit to Metals Conservation in 1994. He is a silver conservator at the Moscow armoury who engraves gems as a hobby.
- Britain, Europe and Prehistory
- Registration number