If you are searching for a precious gemstone that looks similar to a diamond, a white sapphire may be a great option for you. Larson Jewelers carries a great selection of gorgeous white sapphire engagement rings. White sapphires are originated from the mineral corundum and initially have a yellow tinge, which is then treated with heat or chemical to create a clearer(white) sapphire. Sapphires rate a 9 on the Mohs scale, so they are very durable in addition to their beauty. These precious metal engagement rings are very alluring when set with a white sapphire.