October is for ... Well, October is for a lot of things! The birthstone for October is opal and that is one of our favorite stones! Plus, October is Breast Cancer Awareness Month. Our signature Tough Enough Ribbon design honors all those who have been impacted by breast cancer. Hyo Silver is a product partner of National Breast Cancer Foundation, Inc.®. Discover this symbol of strength and other designs featuring pink tourmaline stones. We are choosing to go pink and opal in our October Collection.