I am NOT a gemologist or a professional jeweler I do this as a hobby so please let me know of any problems” If there are any problems please let me know and I will try to resolve it-- if not I will gladly refund your monies. Main Stone Width: 4 mm Main Stone Shape: Round, Style: Stud 925er Silber Nieten Ohrringe Tansanit 0,378ct Tansanit Sterling Silber Ring Tansanit Nieten Runder Tansanit 2.0mm 0.04ct | NaturalGems Shop Tansanit 925 Silber Oval Ring, 0.639ct Hinweise des Verkäufers: “ALL ITEMS ARE MADE WITH GENUINE GEMSTONES AND SOLID STERLING SILVER. Total Carat Weight (TCW): ., 50 Metal Purity: 925 parts per 1000 Main Stone Length: 4 mm Main Stone Color: Purple, Material: Gemstone, Metal: Sterling Silver, Main Stone: Tanzanite, Brand: Handmade