It is the root of the iris flower “Iris Pallida”, almost exclusively cultivated for perfumery in Tuscany, Italy. The rhizome (root) is harvested and stored in warm cellars. As it dries, a natural isolate called “irone” forms inside and the longer it dries the more irone is produced. This maturation takes about 3 to 5 years and 500 kg of iris roots produce only 1 kg of concrete, also referred to as ‘orris root butter’ or ‘butter of iris’, making it a highly prized substance. Its’ scent has a floral violet tone and a warm, creamy, earthy quality with a powdery, woody and leathery effect.