125 Large Rainbow Turquoise Rondelle Disc Beads - 12mm x 4mmPrice is per long 16 inch string of these unusual dyed (colour fixed) turquoise beads yellow, white, red, green, purple, and black. Each bead measures 12mm x 4mm about 125 discs to the string. What is turquoise? Turquoise is a soft, opaque gemstone, formed by volcanic rock reacting to copper deposits brought by water. Colour ranges from blue green, to yellow green with grey, black or brown veining. Most non green turquoise these days is dyed. As