Sterling Silver Lava Stone in 8mm, 6mm or 4mm.Price is for a single bead, or choose your options from the drop down menu.Silver Aromatherapy Essential Oil Diffuser BeadThis amazing little aromatherapy bead allows you to create your own DIY essential oil diffuser necklace. Simply add this bead to any necklace and you can carry the healing and energetic properties of essential oils with you anywhere you go. The loop is large enough to slide over most existing chains. You can also create an aromatherapy bracelet by attaching this to any chain or charm bracelet.The porous lava stone bead absorbs the oils and keeps the scent at the nape of your neck. Infuse this aromatherapy pendant with a single drop of your favorite essential oil or blend, and wipe off any excess. The scent should last at least a day. If you like to keep your scents pure, use different stones for different oils. Please choose 4mm, 6mm or 8mm lava stone from the drop down menu.