Rocks Couture Sapphire Collection 18ct White Gold Earrings With An Oval Cut Center Sapphire Surrounded By a Halo of Round Brilliant Cut Diamonds. Sapphires are a rare precious gemstone, they are extremely durable and beautiful. They come in a variety of colours and intensities and when placed into a piece of jewellery create a truly special piece. It is thought that Sapphire's name comes from the planet Saturn, as sapphire roughly translates to mean "dear to the planet Saturn" in many different languages. The sapphire is also the birthstone for September and a traditional gift for a 45th wedding anniversary. Sapphire Carat Weight: 1.27ct Total Diamond Carat Weight: 0.91ct