Cactus Quartz or Spirit Quartz Please look at pictures carefully. Crystals change colors with changes in type angle and intesnity of light. Color may also vary between monitors.Pictures were taken in natural light. We do our best to give you many views so you can judge the quality of the given crystals. If you have questions please ask. Size: approximately shown by ruler. Numbers are Centimeters These crystals were first discovered in 1986 in the Magaliesberg Mountain Range near Pretoria, South Africa. It was called "Spirit Quartz" by the South African tribal medicine men because they were used for healing rituals. Cactus quartz is formed by a quartz or amethyst crystal being encrusted by a second generation of smaller crystals grown on its faces. It occurs as quartz, citrine and amethyst, and comes in a wide range of colors, including purple amethyst, violet amethyst, smoky, milky clear and golden citrine. Thank you for looking. Please check out our other items. On Jan-18-15 at 09:52:55 PST, seller added the following information: Track Page Views With Auctiva's FREE Counter Pictures sell! Auctiva Free Image Hosting. Auctiva, THE simple solution for sellers.