Joan Vass L'eau de Amethyste Eau de Parfum, 3.4 fl. oz. Details Joan Vass "L'eau de Amethyste" eau de parfum. Glass bottle with amethyst rose cap. Notes: star ruby grapefruit and rose oil. 100mL/3.4 fl. oz. Made in USA. Designer About Joan Vass: American designer Joan Vass drew upon her experience as an assistant curator at New York's Museum of Modern Art when she debuted her first collection of knitwear in 1977. Today, the collection still showcases the timeless, unstructured designs for which the name Joan Vass is known.