Artistic black soapstone essential oil diffuser is designed with aromatherapy practitioners in mind. Soapstone is a soft stone, perfect for carving. It retains heat well and is 100% fire-proof. The Black Zen diffuser is individually hand-carved and is pleasing as a piece of art too. Consists of two pieces, a bowl/dish which fits snuggly on top of the vented enclosure for the candle. Use the heat of a burning tea candle to warm and disperse the fragrance of essential oils and oil blends of your choice. Simple and elegant. Tea candle sold separately. India.