About Lava Rocks: Basalt and related rock types like andesite and dacite are rocks that form when volcanoes erupt magma (lava) onto the surface of the earth and the magma cools. Lava rocks are porous and are excellent for absorbing the oil of your choice. Directions: I suggest applying just 1-2 drops of essential oil to the black lava beads. The scent will last a day if not more. You can use any of your favorite essential oils. The rocks are mounted on a sturdy plastic stretch cord.
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