Handmade Marine Chalcedony 12mm Gemstone Bracelet With Silver: gemstone bracelet strung on strong elastic cord. Size: Medium (7-1/4″).

Marine Chalcedony is a member of the Quartz family with a cryptocrystalline structure. Most commonly found in a range of colors including: white to gray, grayish-blue or a shade of brown ranging from pale to nearly black. The variation of color is due to various embedded marine minerals.