Coral Porcelain Diffuser. A deep water blue base topped with raw textured porcelain in the shape of natural coral. Porcelain Essential Oil Diffusers can be filled with 100% pure essential oils, or with water and oil to diffuse fragrance the lasts 2 weeks or more. A porcelain botanical rests on a ceramic base to bring a natural beauty to your space as you enjoy the aromatherapy benefits of 100% pure essential oils. 15 ml bottle of 100% pure, therapeutic grade Peppermint Essential Oil is included . Essential oils travel up the wick and into the porcelain top to be diffused. When filled with 15 ml of essential oil, the diffuser will provide fragrance for up to 2 weeks. Can be used with any essential oils or fragrance oils. A convenient, low maintenance way to enjoy aromatherapy in your home on a continual basis.