This naturally terminated crystal of black tourmaline has trigonal prismatic form with well-developed second-order hexagonal prismatic faces. ***This tourmaline crystal is completely natural, just as it was found in the earth. The prismatic faces and the terminations of this natural black tourmaline specimen are in very good overall condition with some minor abraded areas. ***See an above view of this rare size collector quality large black tourmaline crystal. See also another side view of this unique large black tourmaline crystal. ***Natural black tourmaline specimen weighing 7.6 Lbs This unique black tourmaline specimen measures 7" tall x 4.4" x 3.9" ***Genuine black tourmaline mineral specimen discovered respectfully by native miners in Brazil A Certificate of Authenticity from our main website www.mineralmienrs.com will accompany this unique item. Black Tourmaline is very popular today for metaphysical use - Black Tourmaline It is know to guards against radiation and environmental pollutants, and is very useful in purifying and neutralizing negative thoughts and internal conflicts, and turning them into positive energy. To learn more about Tourmalines, please copy, paste and visit our Tourmaline Educational and Information Page at; https://mineralminers.com/html/touminfo.htm#tourmaline-information 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!