Aside from her work as a speaker and writer, Mary is a pearl expert who has traveled to Tahiti and Hong Kong to attend Pearl Auctions with her husband Don. For over 22 years, she and Don have owned a fine jewelry business; Black Pearl Gallery, on Maui, Oahu. Kauai and The Big Island in Hawaii, as well as Miami, Florida, Coral Gables, Florida, and Balboa Island, California. Currently, the Black Pearl business has migrated to pop-up shops.