Moissanite is a diamond simulant made of silicon carbide. A diamond simulant is a stone that has a similar appearance to a diamond but is not a real diamond. It is very difficult to tell apart a diamond and moissanite, making moissanite a common diamond alternative. 

Unlike other forms of diamond, moissanite never loses its sparkle or brilliance over time due to its hardness and refractive index that tests the best among all diamonds on the market! So moissanite is a superior gemstone that will always stay bright and beautiful.

No, the main differences between Moissanite and Cubic Zirconia are: Moissanite is made of silicon carbide, whereas cubic zirconia is made of zirconium dioxide. Moissanite diamonds are generally harder at 9.5 on a 10 point scale, whereas cubic zirconia is 8.5 on the hardness scale. This means that moissanite is more resistant to scratches than cubic zirconia.

Moissanite is an excellent engagement ring option. It's also fantastic for wedding rings, anniversary bands, and promise rings. It's a durable stone (9.25-9.5 on Mohs Scale of Hardness) that should continue to look beautiful for generations.