actual: 2.2 cm (7/8 in.)
Copper alloy
1st-3rd century CERomanCopper alloy
2nd-4th century CERomanCopper alloy
1st-5th century CERomanCarnelian set in gold
RomanGlass
RomanSilver
3rd century BCERomanCarnelian
1st millennium BCE-1st millenium CERomanCopper alloy
1st century BCE-1st century CERomanBone
1st-4th century CERomanGold
3rd-4th century CERomanLeaded bronze
2nd-3rd century CERomanLeaded brass
4th century CERoman