Published by on 11/08/2026 The product is a 0.7 carat minimum Tanzanite gemstone with a transparent purple color. It is of excellent cut grade, oval shape, and measures 7.5x5.5mm. The Tanzanite is natural, sourced from Tanzania, and has been heated. It is eye clean in clarity grade and has an asterism effect, making it a beautiful and unique gemstone for jewelry and watch making.