Materials: black ammonite inlaid with turquoise/synthetic (lab created) opal backed in resin, sterling silver wire, sterling silver bail ring, imitation leather necklace cord that has an extender chain (metal components on cord are not sterling). Sterling can be gently polished with a cloth made for silver. I use Sunshine brand-yellow color.
Size: see photo on hand and with a US quarter for size comparison.
This is ready to ship and comes packaged in a cardboard jewelry box!