Tourmalinated Quartz Bezel Set Stud Earrings - 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 stones bezel setting stud earrings with push backings nickel free and hypoallergenic available in sterling silver or solid 14k yellow,