Lava beads are naturally very porous, so just a few drops of essential oils on the lava beads will defuse over time slower than if you put the oil directly on the skin. If you put the oil on with your finger tips, you will have the best of both topical, and Inhalation.
To me the Lave beads are also very grounding, considering they come from the center of the earth.
Special orders welcome. Here are some of my designs.