Lavender Essential Oil Aromatherapy Diffuser Bracelet with Lava Stone and Amethyst. The interplay of porous volcanic rocks and gemstone-quality purple amethyst provides an ideal means for absorbing and diffusing Lavender Essential Oil throughout the day. Strung on stretch elastic, handmade in Washington State. Circumference Sizes: Small - 5.5" / Medium - 6.5" / Large - 7.5" Men, women and children enjoy these! Can be worn alone or stacked. The natural black lava stone was created during volcanic eruptions sourced from Indonesia. A very absorbent stone that can be used to enjoy both the topical and aromatic benefits of essential oils. To use, place 1-2 drops of your favorite essential oil on the lava beads. Using your finger or a cotton swab, spread the oil across all of the lava beads. Allow the oil a couple of minutes to absorb before putting the bracelet on. To increase the scent, simply add more drops throughout the day. Purple satin gift and storage pouch included.