actual: 1.9 cm (3/4 in.)
Copper alloy
1st-5th century CERomanGold and glass paste
1st century BCE-2nd century CERomanCopper alloy
2nd-3rd century CERomanCopper alloy
1st-3rd century CERomanLeaded bronze
2nd-3rd century CERomanSilver
3rd century BCERomanGlass
RomanCarnelian set in gold
1st century BCE-2nd century CERomanCopper alloy
2nd-4th century CERomanBronze, with iron pin and recessed cells for enamel
2nd century CERomanGold
1st century BCE-1st century CERoman