date uncertain
Diam. 1.7 cm (11/16 in.)
Copper alloy
7th-8th centuryAvarCopper alloy
7th-8th centuryAvarBrass
Unidentified centuryGraeco-RomanLeaded brass
10th-13th centuryByzantineAgate
3rd millennium BCESumerianIron with gold and silver
18th-19th centuryJapaneseCloisonné plaque, gold-mounted
19th centuryChineseSilver weave
18th-19th centuryUnidentified cultureHammered Gold
4th-3rd century BCEGreekLeaded bronze
Unidentified centuryUnidentified cultureHammered gold ring with carnelian cameo
3rd-4th century CERomanBronze
1st millennium BCECeltic