Cubic Zirconia is the crystalline form of zirconium dioxide, is low cost and durable like a diamond. It has also become a competitor for diamonds since production in 1976. The name cubic refers to the crystal symmetry. Cubic Zirconia is created in a lab and dazzles with a brilliant sparkle like a diamond. Available in many colors. It was invented as an alternative to diamonds, but today Cubic Zirconia is treasured in its own right. Wash gently with lukewarm water. These Cubic Zirconia pendants are perfect or necklaces, earrings or charms.