Tourmaline Necklace, Multicolor Beads, 925 Sterling SilverTourmaline Necklace with 925 Sterling Silver Findings These are really beautiful quality beads with rich colour and good transparency, they're also really well polished. The Spherical Silver Clasp fits perfectly into this ~ and that screw in connection is actually really easy to use. Finally I love that the beads have been graded in size from small to large ~ that's a lot of extra work for our Thai Partner but she has a very good Fair Trade deal with