Description
Prehnite is an inosilicate of calcium and aluminium. Prehnite crystallizes in the orthorhombic crystal system, and most often forms as stalactitic or botryoidal aggregates, with only just the crests of small crystals showing any faces, which are almost always curved or composite. Prehnite is brittle with an uneven fracture and a vitreous to pearly luster. Its hardness is 6-6.5, its specific gravity is 2.80-2.90 and its color varies from light green to yellow, but also colorless.
This is a beautiful prehnite specimen, it features great color and epidote inclusions.
Dimensions: 2 1/2" L x 2"W
Provenance: Congo, Africa
Type: Actual specimen - one only
