Diamonds might reign supreme in the world of engagement rings, but they certainly aren’t the only gemstone option out there. If you want something different, you have plenty of choices—including stones that look remarkably similar to diamonds, such as moissanite.
Moissanite and diamond are indistinguishable from each other to the naked eye.
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. For example, even an incredibly skilled jeweller with a loupe would find it difficult to see double refraction in an Emerald cut. Moissanite is not as dense as a diamond, meaning it will weigh slightly less than a diamond of the same size. To avoid confusion, the carat weight of Moissanite is always listed by its diamond equivalent carat weight.