White and dark brown lava bead rocks aromatherapy necklace, essential oil diffuser necklace. Available with a sterling silver plated chain, 16k gold plated chain or 16k rose gold plated chain. Necklace measures 18" long, but adjustments to length can be made upon special request. Aromatherapy necklace has dark brown and white lava stones. Simply add 1-3 drops of your favorite essential oil to the lava stones or use a roller ball of your favorite oil mixture. The scent will last for hours to days, depending on the strength of the oil and how much is applied. Place the oil on the beads and allow the oil to soak into the beads for 5-15 minutes, then wipe the excess away with a tissue or cloth. This allows for a way to carry your favorite scents with you all day long in a fashionable way.