Sapphire
Blue Sapphires are the most common and popular colored stone choice for Engagement Rings. For more reasons than just the beautiful blue color it possesses, it is also very high on the hardness scale. You want to wear an Engagement Ring everyday and with everyday wear, Sapphires and any other colored stone will scratch. The Sapphire gemstone, also known scientifically as Corundum, is on the top of gemstone hardness scale. There are also many different colors of Sapphires to choose from including Pink, Peach, Yellow, Green and White Sapphires!