|Moissanite is a new category of gemstones with fire, brilliance and lustre more than any other gemstones in the world including diamonds! Discovered from meteorites each Moissanite gemstone is hand cut to attain perfection. Essentially composed of carbon and silica it has an incredible hardness of 9.25 just next to diamonds. This would never let it scratch or become cloudy with wear or dull with time. Moissanites are guaranteed to never lose their optical properties.Moissanite looks a lot like a diamond. Sparkle wise, moissanite has an even higher refractive index than diamonds, so it's even sparklier than a diamond. It's a beautiful gemstone in its own right and its brilliant Round Cut Shaped and stone size is 5.0mm.