actual: 2.2 cm (7/8 in.)
Carnelian set in gold
RomanLeaded bronze
1st-2nd century CERomanBrass, gilded
5th-6th centuryRomanCopper alloy
2nd-3rd century CERomanLeaded bronze
2nd-3rd century CERomanLeaded brass
2nd-3rd century CERomanGold
1st-3rd century CERomanBrass and glass
1st-3rd century CERomanBronze
1st century BCE-1st century CERomanBone
1st-4th century CERomanGold and glass paste
1st century BCE-2nd century CERomanCopper alloy
2nd-6th centuryRoman