Black Chalcedony Bracelet 16x24 mm bead

🍃 Black Chalcedony is a type of microcrystalline quartz that is opaque and appears black or dark gray in color. However, the gemstone of black Chalcedony in the market is usually created by suffusing chalcedony in a sugar solution and then treating with sulfuric acid, causing the stone's appearance to change to a black color. This process enhances the stone's appearance, making it very popular. It is commonly used as a Jet imitation.