This .925 sterling silver ring features a vibrant oyster copper turquoise stone for a bold, artisanal look. Oyster Copper Turquoise = approximately 0.68 ct. tw. Material: .925 Sterling Silver Imported Oyster Copper Turquoise measures 10x14mm Ring cannot be re-sized It is customary to treat most gemstones to achieve enhanced colour and durability. Some of these treatments may not be permanent, and may require special care. Colour: white