1.46 Oval Cut Sapphire & Diamond Ring in Platinum1. 46 Oval Cut Sapphire Diamond Ring in Platinum. This modern ring features 1. 47 carats of blue sapphires and . 57 carats of diamonds finished in shimmering platinum. Three (3) . 49 carat sapphires are oval cut and feature a highly saturated, dark blue hue. The sapphires are bezel set and haloed by thirty six (36) . 015 carat near colorless diamonds. The diamonds are eye clean and have an illuminating brilliance around the deep blue sapphires. The