Moissanite is a manmade diamond. So exact is this replication that it will fool diamond detecting devices used by many Pawn Shops and Jewelers. It is illegal to sell moissanite as a diamond. In its highest quality it has perfect color and clarity. very high quality moissanite sells for over 1000.00 a carat. Though manufacturers should micro-engrave the name moissanite on the gem that is not always the case. It is also available in yellow, blue and green and will test as a colored diamond. There is a test for moissanite but it is not 100% accurate.