Green Tourmaline on Quartz Matrix - Unique #6 Quartz is a versatile mineral that grows virtually everywhere. It is also a stone matrix that hosts a wide variety of other crystals. The specimen for sale has green tourmaline crystal rods growing out from the quartz. Green tourmaline is a valuable crystal prized for its spectacular colour and rod crystal formation. This specimen has an abundance of quartz with some yellow colouring due to pegmatite - the matrix rock it was mined out of. This is a very interesting and impressive crystal cluster that showcases nature’s ability to create beautiful stones. Note: This product is fragile and should be handled with care.