Lava stone triangle Essential oil diffuser necklace. This simple one bead necklace is lightweight and versatile. Perfect for layering.Lava is a stone of protection, strength, and fertility. **To use with essential oils: Place a drop or so on your finger and rub it in to your beads before putting on your jewelry. Allow oil to absorb into the stone for 5-10 minutes. LENGTH: 10" Chain with 2" extender PENDANT: approx. 1"