The crystalline form of zirconium dioxide is created in a lab which is known as Cubic Zirconia. This synthesized material is hard, colourless and shiny. Also known as American Diamonds, the CZs are an alternative used in place of diamonds to make it more affordable for the masses. Since it is really strong in nature, CZs are long-lasting and look spectacular due to the impeccable shine. CZs are really fashionable and one of the most popular choices of diamonds to be used in the contemporary style of necklace. The most stunning Cubic Zirconia necklaces are paired with big and bold coloured stones such as sapphires, rubies, emeralds, etc. Silver is the preferred metal for Cubic Zirconia diamond necklace base.