Cubic Zirconia CZ 4mm Round

Cubic zirconia faceted gemstones for firing in metal clay. These fireable stones are perfect for embedding into metal clay and firing in place. However, please note that some colors are unstable and may change in firing. It is recommended to fire blues and greens at low temperatures or in carbon environments.  Below is a list of our tested firing: 1650f for 1 hour: Garnet, Orange, Pink, Champagne, Golden Yellow, Lavender, Clear, Sapphire, Olive, Violet, Ruby, Peridot 1500f in carbon 1 hour: Topaz Blue and Aquamarine 1400f for 15 minutes: Emerald and Black 1100f in carbon 15 minutes: Tanzanite