Kyanite

Borisovskie Sopki, Plast, Chelyabinsk Oblast, Ural Federal District  Russia (1997)

Specimen size: 8.4 × 7.2 × 3.4 cm = 3.31” × 2.83” × 1.34”
Main crystal size: 3 × 1 cm = 1.18” × 0.39”