There are two kinds: natural and synthetic. In the jewelry industry, commonly known as zircon, refers to the synthetic cubic zirconia, which is crystallized from zirconium powder at a high temperature of about 2,700 degrees in high frequency furnace. Various trace elements are added to white zirconium powder to produce different colors. Black zircon was obtained in high temperature deoxidation environment. Zircon of most colors is unstable to temperature. When waxing jewelry, determine whether this batch of zircon can be waxed at high temperature to avoid loss. Shenzhen Tian Tao jewellery