Women's Bands & Rings
- Eternity Rings
- Three Stone Rings
- Five Stone Rings
- Diamond Bands
- Ruby Rings Blue Sapphire Rings Pink Sapphire Rings
- Diamond Solitaires
- Semi-Mounts
Men's Bands & Rings
Diamond Jewelry
Explore the Difference
Unlike most Internet jewelers, at Diamond Design Co. each piece of jewelry is carefully designed and crafted by our in-house jewelers.
Need it wider, smaller, more stones, less stones, a different metal or precious stone, NOT A PROBLEM. Our jewelry is made-to-order-, "made by us for you".
Fine quality jewelry should come with fine quality service
Contact Information
Diamond Design Co.
760 Market Street, Suite 357 
San Francisco, California 94102
Email: contactus@diamonddesignco.com
We are located in the heart of San Francisco, near Union Square, inside the Historic Phelan Building. We love this location because it is not only in beautiful downtown San Francisco, but also we're close to many restaurants, shopping, and easy access to transportation. BART (Powell St. Station), Muni, Market Street Trolley and Cable Cars are just steps away. Please come visit us.
By Appointment Only
415.956.1047
415.956.2519 (fax)
1.866.488.3326 (toll free)
Check the BART Schedule, Powell Street station at Union Square
About Us
Test Drive Your Ring
The ultimate in jewelry buying experience. Test drive your ring puts you in the drivers seat. Your ring, your way. Learn More
Advanced Design Technology
Quality you can trust from Diamond Design Co. We make each piece to your exact specifications. See our videos. Learn More