Bring your own stone.
This hand-coiled copper wire cage is built to cradle a tumbled stone of your choosing. Drop one in, and the spiral holds it snug against your skin without a clasp or glue in sight. The top loop is ready for a cord or chain, so you can wear whatever stone matches the day, or swap it out when your energy needs change.
Good for anyone who wants a rotating crystal necklace instead of committing to one stone forever, gift-builders who want to pair this with a tumbled piece for a two-part present, and copper lovers who want the metal's own correspondences (conductivity, warmth, Venus) doing quiet work against the skin.