Zircon is a synthetic product. I don't know where you come from. There is a Shitang Road Market on the seaside of Qinhuangdao, which can wholesale all kinds of artificial products and pearls. The price is very cheap. The most common pearl necklace is only a few dollars. Many people from Beijing and Tangshan go there to get goods. If you are near Qinhuangdao, you can come and have a look. I am from Qinhuangdao, you can add me 550 13222.