Definition
Iris is one of the most expensive naturals in perfumery. The scent-bearing compound irone develops only after rhizomes (orris root) are dried and aged for a minimum of three years. Steam distillation of the aged powder yields orris concrete, from which orris butter (orris absolute) is obtained by solvent or supercritical CO2 extraction (Société Française des Parfumeurs, accessed 2026-05-27).
Main production regions are Tuscany (Italy, especially Greve in Chianti) and Morocco. Florentine orris from Iris pallida cultivated in the Tuscan hills commands the highest prices: several thousand euros per kilogram of orris butter.
In composition
Iris occupies a unique structural position: its powdery, woody character anchors both feminine floral compositions and modern gender-neutral woody perfumes. Key niche examples include Iris Silver Mist (Serge Lutens, 1994, Maurice Roucel) and Hiris (Hermès, 1999, Jean-Claude Ellena) (Fragrantica, accessed 2026-05-27).
Synthetic irones allow perfumers to work with iris character at accessible cost, but natural orris butter adds complexity and mineral depth that synthetics replicate only partially.