Aromatherapy Necklace. Enjoy aromatherapy wherever you go with this 26 inch long necklace made with smoothly polished red coral chunks and gold tone beads with lobster clasp. A two inch long 24kt gold and hand turned wood diffuser cap comprise the pendant. Add a few drops of your favorite essential oil (essential oil not included) to the cotton wick to absorb the oil, unscrew the top/diffuser cap of the pendant and add the wick inside. The wick can be easily removed from the diffuser cap and replaced to change aromas as desired. Four wicks, essential oil jar, and velvet carrying bag are included.