NWOT- This essential oil diffuser necklace has a reusable lava stone inside a locket style basket. You can put essential oils, perfume, aromatherapy, or any fragrance on the lava stone and the scent lasts for hours. Comes in an organza gift bag with any two color lava stones. Let me know which colors you want. (Black, White, Green, Blue, Yellow, or Red) Charm is about 1 inch. Made of copper with rhodium plating.