This is an amazing work of art by Katie Brassell.  Stones used are Rainbow Moonstone, Amethyst, 5 Boulder Opals and Blue Topaz.  All are set in sterling silver with all but the center link having 14k gold embelishments.  The toggle includes a sturdy sterling silver bar.  Measures 7" for the smaller wrist.  Several of my customers have bought this style bracelet, each one a unique chemistry of different combinations of stones.