This pendant is a little work of art. The metal case is hand carved and shaped into a 36mm by 12mm rectangle box which is then filled with a gemstone mosaic. Seven tiny herkimer diamonds (clear quartz with 6 sided points on either end) are encased in grout and sealed to perfection. The crystals highlight the metal underneath and magnify its shininess, creating a juxtaposition of diamond-like sparkle next to rocklike black grout. The necklace is available in copper as shown, sterling silver and brass but always suspended on a 16 inch sterling silver chain.