No. 2 Rare Mineral ☆ Gem Silica Bracelet ☆ 10.2mm Thank you for always viewing! We will now introduce the product. This is a Gem Silica bracelet. Gem Silica is a rare mineral formed when quartz permeates chrysocolla and silicifies. The mineral name is "Silicified Chrysocolla." It is a rare mineral where chrysocolla has been silicified. It is a very rare mineral, only found in limited areas such as Arizona, USA, and Peru. The green parts are described as "forest-like green" The blue parts are described as "sea-like blue." Size is 10.2mm Wrist size is 16 cm. Thank you very much.