Lava Rock Diffuser bracelets allow you to bring your essential oils with you wherever you go! So why diffuse your oils with lava rocks? Lava is an incredible stone. It begins as mineral-rich magma buried deep in the earth. Then, after an eruption it transforms into an elemental mixture of fire and earth. For hundreds of years, these rocks have been used by many cultures for their balancing and protective benefits. Due to their naturally porous properties, lava stones can hold the scent of an oil for several days at a time.