3.48 Carat Genuine Blue Sapphire and White Zircon .925 Sterling Silver RingSpecifications: Birthstone Month: September Finish: Rhodium Plated Gemstone Wt: 3. 48 ctw Gender: Women Gross Wt: 7. 40 Height: 5. 84 MM Length: 23. 88 MM Metal: . 925 Sterling Silver Metal Stamp: 925 Primary Stone Color: Blue Stone 1: Blue Sapphire Stone 1 Carat: 3. 20 ctw Stone 1 Creation Method: Natural Stone 1 Quantity: 16 Stone 1 Setting: Prong Setting Stone 1 Shape: Oval Stone 1 Size: 4x3mm Stone 1 Treatment Method: Heat Treated Stone 2: White