The Excalibur Diamond is a real diamond grown in a laboratory duplicating the Geological process of a mined diamond compared to Zirconia (CZ), YAG, White Sapphire and others that are fake diamonds made to look like a real diamond. The Excalibur Diamond is identical to a geological diamond with the same physical, optical and chemical characteristics. Stop by Miner’s Den and learn the difference so you can choose the diamond that is right for you.