QUARTZ Variety AMETHYST
(Cactus Quartz or Spirit Quartz)
Mpumalanga Province, South Africa
SIZE: 3 1/4" X 2 1/2"
Description: A cactus or spirit quartz is a quartz crystal that is encrusted by a second generation of smaller crystals grown on its prism faces. Another term used is pineapple quartz. Different from candle quartz, the small crystals point away from the prism, and their orientation is not related to the crystallographic orientation of the central crystal. Interestingly, the rhombohedral faces of the first generation crystal's tips usually remain free. This particular piece features 2 large, bent crystals of light amethystine color on quartz matrix.