Dragonfly Necklace Charm -Amethyst and Lab Opal

This is a dragonfly charm with amethyst and lab created opals. I believe it to be sterling silver but my eyes are not good enough to make out the stamp on the back. I have worn it once or twice but don’t reach for it very often, so it’s time to let it go. Non-smoking home. Will come wrapped in tissue in a kraft cardboard type gift box.