While natural moissanite does occur (as tiny black crystals), the stone we know as moissanite today is gem grade silicon carbide. It is an extremely hard, durable and brilliant stone that if well cared for will last a lifetime without becoming dull or discoloured. The stone is manufactured in a laboratory under very high temperatures and precise conditions that allow for the growth of a clear crystal suitable for cutting. Until a few years ago, the process was patented by a US company who produced the first colourless (DEF colour) moissanite. Our gems are made by this same process and cut to the same high standard, therefore they are the same excellent quality as the original ones, only more affordable.