c. 400 CE-1900
actual: 12.3 cm (4 13/16 in.)
Lapis lazuli (?)
1st-3rd century CERomanMarble
2nd century CERomanBone
RomanMarble
2nd century CERomanMarble
4th century CERomanalabaster
3rd century CERomanMarble
2nd century CERomanBone
RomanMarble
3rd-4th century CERomanLuna marble
3rd century CERomanParian marble
2nd century CERomanMarble
2nd century CERoman