This natural color dark green tourmaline crystal is so dark it appears to be black. ***When held to a light, its beautiful green body color and brown color the crystal tips is revealed as shown. This collector quality tourmaline crystal specimen has a large area with fine cabochon gem grade transparency where it would yield a dark green tourmaline cabochon gem weighing 25 carats, or a 15 carat faceted gem with very faintly visible inclusions. ***This natural color green tourmaline crystal has natural prismatic faces in good condition, and the naturally terminated crystal tips show very interesting natural etching. See a close-up view of the naturally etched terminations on these intergrown tourmaline crystals. ***A Certificate of Authenticity from our main website www.mineralminers.com will accompany this collector piece at no additional charge. Tourmaline is very popular today for metaphysical use, Tourmaline is know to promotes self-confidence, diminishing fear. Tourmaline is also said to attracts inspiration, compassion, tolerance and prosperity enhancing ones energy and removing blockages. It is said to help with paranoia, dyslexia and improves hand-eye coordination. More Green Tourmaline sizes available at our main website, follow the link to see them; https://www.mineralminers.com/html/green_tourmaline_crystals.stm At MineralMiners.com your satisfaction is our top priority! We guarantee Unique Items, Superb Energy and Collector Quality at Miner's Prices! ? Have a "Gem" day!