Prehnite

Prehnite is a form of calcium aluminium silicate and is a mineral that occurs in veins and cavities in mafic volcanic rocks. It is semi-transparent to translucent with pale green to yellowish green colouring. It is not normally treated. Hardness: 6-6.5 (Mohs).

3 Items
Prehnite Faceted Round ~ Various Sizes
Prehnite Faceted Round ~ Various Sizes
£1.40
Prehnite Round Cabochon ~ Various Sizes
Prehnite Round Cabochon ~ Various Sizes
£0.70