Bloomy Lotus® – Lava Rock Diffuser. Bring nature and vital earth elements into your space with the Bloomy Lotus® Lava Rock Diffuser. Derived from volcanic minerals deep within the earth, lava rocks have been used by ancient cultures around the world for thousands of years for their impressive health, balancing and protective benefits. The porous nature of the lava rocks makes them ideal for absorbing essential oils with no electricity or batteries required! Simply open the lid, add a few drops of your favourite essential oil and allow the fragrance to naturally diffuse throughout the room all day long. Simply close the lid when you have reached the optimum scent you desire.