Cabochon Bezel Set Tourmalinated Quartz Solitaire Ring - 8mm RoundOf all the beautiful gemstones on Earth, tourmalinated quartz is my absolute favorite. This very special gemstone is made of crystal clear quartz, with patterns of black tourmaline needles swirling underneath the surface. Each stone is as unique as the individual who wears it. 8mm round cabochon tourmalinated quartz band is round and measures 1. 5mm wide available in sterling silver or solid 14k yellow, white or rose gold made to order, ships within 1