3.82 Round Cut Sapphire & Diamond Earrings in Platinum3. 82 Round Cut Sapphire Diamond Earrings in Platinum. These elegant cluster earrings feature 3. 82 carats of blue sapphires and 2. 74 carats of Round Brilliant cut diamonds finished in platinum. The two (2) 1. 91 carat sapphires have a deep blue hue and are set in four (4) platinum prongs. The sapphires are haloed by eighteen (18) 0. 15 carat Round Brilliant cut diamonds. The diamonds are eye clean and exceptionally brilliant, adding some sparkle to