Learn About Moissanite
Moissanite is regarded as the best diamond alternative, with some optical properties exceeding those of a diamond. Moissanite has over twice the dispersion value of a diamond, which means that it has a greater fire (or display of spectral colors) that is visible when you rotate the stone. Moissanites also have an extremely hard surface (9.25 Mohs, diamond being a 10) making them able to withstand everyday wear without losing their luster for years upon end. Unlike less attractive cubic zirconias, moissanites don't "cloud" which means they'll maintain their clarity & sparkle throughout a lifetime just like a diamond. This makes moissanite a great alternative for any piece of diamond jewelry.
As the best alternative to natural diamonds：