Opal
Specimen ID: AM-ECC-J2
Opal : SiO2·nH2O
Mindat locality:
weight: 12.76 carats
Black opal polished on all sides.
Measurements: 19.94 x 13.39 x 8.27 mm.
Mineral(s)
3,420 gemdatids have been issued as of 11th Dec 2025 10:37 pm UTC