Green Tourmaline on Quartz Matrix - Unique #5 Green torumaline is valued for its spectacular green colour. It is a stone of vitality and strength. The specimen for sale has green tourmaline crystal rods growing in a quartz matrix. There are hole in the piece where rods used to grow. The rods and holes mostly face one way, with some watermelon tourmaline crystals growing among the green. This is a very valuable piece and rare for its size. Note: This product is fragile and should be handled with care.