3.89 Carat Genuine Amethyst, Tanzanite & Chrome Diopside .925 Sterling Silver RingSpecifications: Birthstone Month: February Finish: Rhodium Plated Gemstone Wt: 3. 89 ctw Gender: Women Gross Wt: 5. 93 Height: 7. 11 MM Length: 18. 80 MM Metal: . 925 Sterling Silver Metal Stamp: 925 Primary Stone Color: Purple Stone 1: Amethyst Stone 1 Carat: 2. 15 ctw Stone 1 Creation Method: Natural Stone 1 Quantity: 1 Stone 1 Shape: Oval Stone 1 Size: 10x8mm Stone 1 Treatment Method: Not Treated Stone 2: Tanzanite Stone 2 Carat: 1. 02 ctw Stone 2