Hypoallergenic and Nickel Free. 10mm Black Lava Stones 8mm Black Lava Stones Gold Wire Hoop Pendant Gold Earwires Aromatherapy Earrings Handcrafted in The USA, These Double Black Lava Stone Wire Hoop Diffuser Earrings combine style and functionality in a unique way. Each earring features three black lava stones that not only adorn your ears but can also diffuse your favorite essential oils throughout the day. The elegant wire hoops add a touch of sophistication to any outfit, making them a versatile accessory for any occasion. Stand out with these intricate and practical earrings that are as beautiful as they are beneficial. Simply put a drop of your favorite sent of essential oil onto a lava stone and the sent will last 12-24 hours.