This amazing cabochon gem of natural black star sapphire shows a very well developed six-rayed star when viewed under incandescent bulb light or under direct sunlight. This genuine black star sapphire gem has a dark brownish-black color (100% natural color - it has not been heated or treated in any way). ***The background shows faint natural cross-hatching. It was mined and cabochon-cut ethically and respectfully in India. ***The back side was roughly ground and shaped flat with a beveled edge. Natural color star sapphire gem weighs 9.71 carats ***Star Sapphire size: 13.0mm x 10.8mm x 5.9mm deep Shape: oval cabochon ***Mined ethically and respectfully in India See another side view of this black star sapphire gemstone. ***See also an additional view of this unique large black star sapphire gemstone. A Certificate of Authenticity from our main website www.mineralminers.com will accompany this amazing gemstone at no additional cost to you. ***This beautiful gemstone will arrive inside a gem box together with a gemstone cleaning cloth. Star Sapphire is very popular for metaphysical use - Star Sapphire is said to ward off the forces of the dark and strengthen one’s faith. As a result, star sapphires have often been used as protective talismans. Sapphires were believed to provide an early warning of hidden dangers. It is said that the power of this rare sapphire is so strong, that it would not diminish even after passing the gem to another person. To learn more about Sapphire, please copy and paste the link to our Sapphire Educational and Information Page at; https://www.mineralminers.com/html/sapphire.htm#sapphire-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!