- This 1ct D color white moissanite is a popular choice for those looking for a brilliant round cut stone. The gemstone is lab-created and has excellent cut grade, with a loupe clean clarity grade. It has been certified by GRA and is not enhanced in any way. The moissanite has a translucent quality and is 6.5mm in length. This gemstone is perfect for jewelry and watches, and will make a great addition to any collection.