actual: 2.2 cm (7/8 in.)
Copper alloy
1st-5th century CERomanCarnelian set in gold
RomanCopper alloy
1st-3rd century CERomanGold
4th-5th century CERomanCarnelian
1st millennium BCE-1st millenium CERomanBrass and glass
1st-3rd century CERomanCopper alloy
2nd-3rd century CERomanBronze
2nd-3rd century CERomanCopper alloy
1st century BCE-1st century CERomanGold and glass paste
1st century BCE-2nd century CERomanGold
Roman