1900
2.54 cm (1 in.)
Copper alloy
1st-3rd century CERomanCopper with stone
20th centuryGermanSilver colored metal
19th centuryIndianBanded agate
1st century BCE-2nd century CERomanGold with applique elements
6th centuryKoreanGilt copper alloy
7th-8th centuryAvarGold, silver and copper alloy
14th-15th centuryPre-ColumbianCopper alloy
9th-8th century BCEItalicLeaded bronze
1st-2nd century CERomanAgate
3rd millennium BCESumerian