Gorgeous Vintage Inspired Sapphire Stacking Ring Set►Made of solid sterling silver with a rhodium finish (925)►Average band width: 2 mm (marquise band), 1.5mm (twisted band)►Sold as a set. Gemstone: SapphireColor: Ceylon BlueShape: Marquise & RoundCarat Weight: 3/4 ct. (approx.)Gemstone creation: 100% Genuine Lab-Grown SapphireStone Origin: Sri LankaHardness: 9 (Mohs scale)✓ 100% Nickel-Free✓ Comfort Fit✓ Free Ring Box✓ Free USA Shipping