Beads measure about 3mm to 4mm in diameter. These specially curated Multi Gemstone strands feature Pink Peruvian Opal, Neon Blue Apatite, Tanzanite and more for an array of high-quality gemstone pieces. Fans of these eclectic strands will find ample opportunities for necklaces, earrings and more with these high-quality fafceted rondelle strands.