No17 Therapy's Monolith for essential aroma oils is a beautiful aroma lamp diffuser made of travertine stone and comes with a cup made of golden brushed brass Fill the cup with water and drip 3-4 drops of your favorite aroma oil from No17 Therapy into the water. Light a tealight candle and place it under the cup and enjoy how a pleasant water vapour spreads a light and pleasant fragrance throughout the room. Monolith is particularly suitable for larger rooms where you want the scent to be experienced immediately. The warm water vapour distributes all the notes of fragrance and ensures that the scent feels balanced and rounded. The monolith is made of natural materials and in this way there will be variations in the surface and appearance of the travertine stone.