Moissanite is a gemstone born from the stars. Moissanite has more colors and fire, making quick flashes of rainbow color when moving the stone around. This disco ball effect can be more pronounced in sunlight. Like a diamond, the larger the moissanite the more color you are able to see and the easier it is to differentiate it from a diamond. Natural Diamond Hardness is 10 on Mohs Scale & Moissanite Diamond Hardness is 9.25 and higher on Mohs scale. * Diamond & Moissanite maintains its clarity and sparkle throughout a lifetime. The most effective way to tell Moissanite apart from a diamond is to use a loupe to look through the top, or the crown, of the jewel at an angle. You will see two slightly blurred lines that indicates a double refraction, an inherent quality of Moissanite. Double refraction is easier to see in some shapes than others.