The old-fashioned fragrance block in a modern jacket. This modern essential oil fragrance stone is small and convenient to use. The top part is porous so that the oil is easily absorbed. No mess and so sticky. Because essential oil is volatile, the fragrance is diffused into the nearby air. The fragrance stone is made of ceramic and wood. Use fragrance stone: depending on the oil and the desired fragrance experience, you can drop an average of 3 to 10 drops of aromatic oil of your choice on the fragrance stone. So you use less strong essential oils, such as lemongrass or basil, than a less strong oil, such as mandarin or cedar. Why Chi Fragrance Stone? For a subtle scent. Safe to use for small spaces.