These are lots of 24 genuine Tanzanite beads; Pretty Transparent/translucent blue and violet Tranzanite Colors They are ~3.8mm to 4.3mm in diameter, and about 2.5mm thick; Facet Rondelle Cuts; 24 beads are about 2" if strung, and temporarily strung on 14k gold wire; Tanzanite beads have small holes-use .013" cord or 28 gauge wire or thinner