guitar string & black lava with sterling silver findings. made from molten rock cooled to room temperature, black lava is a natural, organic, essential oil diffuser. use these earrings & necklace to keep your favorite aromas close to you all day long. black lava is a stone of guidance, understanding, purpose, & inner strength. created out of the destructive chaos of volcanoes, it helps you to thrive and to follow your dreams. resonating with the root chakra, black lava offers stability & calm in times of change.