This yowah nut boulder opal pendant is handcrafted from 14K/20 gold filled wire and a yowah nut boulder opal cabochon (cab). The white in this one reminds me of a woman’s face. The stone has the most gorgeous blue and greenflashes, as well as some purples over the white area. They don’t show very well in the photo,but the flashes are intense colors. The back is also pretty, as shown in the 3rd picture. This is not a double-sided pendant though. 14K/20 gold filled wire is basically a tube of 14K gold with a jeweler’s wire down the center for flexibility. It wears well, does not tarnish, and has the same allergy reactions (or non-reactions) as 14K gold. Each of my cabochon pendants are "one-of-a-kind" and you are selecting the actual one you will be receiving. The chain is not included, but I do have a selection of chains if you need one. approximately 7/8" x 1 7/8" 21mm x 47mm 8mm bail