mid 3rd century CE
actual: 12.7 cm (5 in.)
Garnet crystal
2nd-3rd century CERomanMixed copper alloy
1st-3rd century CERomanMarble
2nd-3rd century CERomanLeaded bronze
1st century BCE-3rd century CERomanLuna marble
3rd century CERomanLapis lazuli (?)
1st-3rd century CERomanMarble from Western Asia Minor
3rd century CERomanLimestone
3rd-4th century CERomanStone
2nd-6th centuryRomanBrass
1st-3rd century CERomanCrystalline Greek marble, probably from Thasos
2nd-3rd century CERomanLeaded bronze, traces of gilding
2nd-3rd century CERoman