She tells People.com the jewellery she has helped to create "reminds me so much of the roses I made out of ribbons for my friends and family while in the hospital.
"I am so grateful to Alex for creating such a beautiful piece to benefit Right Action for Women. Proceeds from the necklace will help women at high risk for breast cancer get the screenings and testing they need to beat this disease."
The pendant, available in gold and silver, features a tree and branches design.
Applegate was pronounced free of breast cancer in August, 2008.