A Perfect Staurolite Crystal on Matrix from Russia - 4.8"

A perfect Staurolite crystal on matrix from Russia. It is a 90 degree cross, which is of the rarest form of all Staurolite crystals, and most valued.
Location: Kola Peninsula, Russia.
Size: 12.0 x 10.7 x 4.2 Centimeters
Weigh: 590 Grams