Sable (Martes zibellina)
Sable is the most expensive fur, highly valued for its rarity, lush dark colour and deep, silky pelt. Ranges in colour from dark brown (almost black) through brown to pale yellow/ golden. Used for garments, trimming and small pieces such as stoles.
Source: http://www.wearefur.com/about-fur/fur-types/sable-martes-zibellina