16" strand of raw quartz crystals; randomly drilled. Lightly termilated quartz; quartz with black tourmaline needles growing through it. You get two gems in one! Beads are rough cut and many are still in their original crystal shape! 7-12mm diameter beads. Please note, this is a strand of lightly termilated quartz, and not all will have highly visible needles ot quadrants of black tourmaline. We do offer another strand with more visible needles .