Rocks Couture Gemstone Collection 18kt White Gold Ring with an Oval Cut Aquamarine Centre Stone Flanked by Two Round Brilliant Cut Sapphires in a Diamond Halo. This three stone ring is truly unique with the combination of Aquamarine, Sapphire & Diamond. The blue tones from the Sapphire and Aquamarine compliment eachother beautifully. The added sparkle fromt he diamond halo brings a wow factory to this beauty. Aquamarine Carat Weight: 1.50ct Sapphire Total Carat Weight: 0.50ct Diamond Total Carat Weight: 0.34ct