Lava stones are said to impart grounding and calming properties and their porous nature makes them the perfect carrier for essential oils. These are ideal for creating a library of scents to wear with our lava stone diffuser necklaces. Mix your own signature scents or change it up day-by-day with a quick rinse of the stone. A few drops of essential oils in the lava stone can last a full day or more. Stones sold separately.