D’Amadeo is a San Francisco-based loose colored stone, natural diamond and estate jewelry wholesaler. With a focus on known-source gemstones, primarily mined in the United States and East Africa, D’Amadeo enables jewelers and designers to share each stone’s journey from mine to finger with their customers. Antique, historical-cut and post-consumer gemstones from the Georgian period onward elicit wonder.

D’Amadeo founder Jared Amadeo Holstein serves on the advisory board for Ethical Metalsmiths and as co-chair of its Responsible Sourcing Committee, as a member of the Jewelry Glossary Project, and was a longtime board member of the Jewelry Industry Summit. 

Jared enjoys collaborating to create a more transparent, sustainable and equitable future for the jewelry industry and those people, communities and places it impacts.