Cubic zirconia gemstone History started being created in 1976 as a result of its diamondlike qualities, low cost, and overall sturdiness. Cubelike zirconia is a mineral that's used as a diamond simulant and is wide synthesized. Cubic zirconia isn't real and isn't a diamond, tho' it's tough for the eye to inform the distinction between a piece of cubelike zirconia and a diamond. It's a stone ...