This necklace features a raw green calcite crystal wrapped in plated copper wire. The pendants shown are example only, the one you receive may vary in shape, size, and color. MATERIALS & SIZING -Crystals are roughly 0.75 - 1 inch long -Necklace chain can be waxed black hemp cord, adjustable black cord, sterling silver, 14K gold filled, or 14K rose gold filled -All chain options are nickel free -The hemp cord option does NOT have a clasp JEWELRY CARE Please avoid contact with water. If needed, wipe clean with a soft jewelry cloth.