Jewelry from the collections of the late Estee Lauder, founder of the cosmetics empire that bears her name, and of her late daughter-in-law Evelyn H. Lauder will be sold by Sotheby’s on Dec. 5 with the proceeds to benefit The Breast Cancer Research Foundation.

Estee Lauder, who guarded her age, died in 2004 in her mid to late 90s, and Evelyn Lauder, who was the co-creator in 1992 of the pink ribbon symbol for cancer awareness, and who the following year founded The Breast Cancer Research Foundation, died last November at 75.