Twenty-two inch adjustable necklace of softly faceted Boulder Opal. It is graduated, with the largest bead in the center measuring 40 mm x 27 mm x 11 mm. The smallest beads, at the ends near the clasp, measure 23 mm. The necklace has a self-adjusting silk cord which makes it very easy to wear -- no clasps to deal with! The stones in this particular necklace are a little darker, with more greys and blacks, than some of our other Boulder Opal necklaces; this one reminds me a little of Vermont or New Hampshire granite. That's a good thing, at least to me, but that could be just my old New England heritage popping up again.....