Sillimanite
Specimen ID: AT-B11-UW
Sillimanite : Al2(SiO4)O
Mindat locality:
weight: 17.27 carats
Sharp eye on dark brownish grey body color.
Measurements: 14.25 x 14.05 x 9.94 mm.
Mineral(s)
3,420 gemdatids have been issued as of 12th Mar 2026 12:57 pm UTC