This uncut rough gemstone is a stunning 36.73 carats and features a natural white corundum (sapphire) with a beautiful asterism effect. The gemstone shape is rough and the clarity grade is moderately included. It measures 27.77 mm in length, 17.28 mm in width, and 8.00 mm in depth. The Reflective Index tested a low 1.76 on my R.I. as well as a durable 9 on the MOH testing making it a sturdy gemstone that will male a lovely piece for years to come or as a specimen piece, top notch.


The gemstone has not undergone any treatment and was created naturally in Sri Lanka. It comes from Miragegemstones and is sold in a unit quantity of one. The gemstone color is white and it is translucent. This is the perfect addition to any jewelry collection, and it is sure to be a conversation starter.