c. 400 CE-1900
actual: 3.7 cm (1 7/16 in.)
Crystalline Greek marble, perhaps from Naxos
1st century BCE-2nd century CERomanalabaster
3rd century CERomanStone
1st-5th century CERoman?Bone
1st-3rd century CERomanMarble
1st-2nd century CERomanMarble
3rd-4th century CERomanBone
RomanMarble
2nd century CERomanMarble from Greek mainland (Hymettan?)
1st-2nd century CERomanGarnet crystal
2nd-3rd century CERomanMarble
3rd century CERomanMarble
2nd century CERoman