Green Tourmaline on Quartz Matrix - Unique #10 Quartz is a very popular crystal that grows in a variety of ways. The specimen for sale has quartz in a chunk form, an amorphous crystal with white colour. There are also several thick green tourmaline crystal rod inclusions along the quartz. Green tourmaline is prized for its brilliant green colours and crystal formations, which is well displayed in this specimen. Note: This product is fragile and should be handled with care.