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(209) 588-8787

About Us

We are located at 94 South Washington St. in Sonora, California, in the downtown historical area in the middle of the California gold country. We have beautiful fine jewelry in our store created by Louis Mastro.  Yet many customers bring in their jewelry that they are no longer wearing, and have the gold, diamonds and gems recreated into something they will enjoy and love.
We can reuse your old jewelry by refining it back to its 24KT pure gold form and mixing it with clean gold to create perfect castings in whatever color gold you would like (yellow, white, rose, green and more). We work hard to give you the most value and make this as affordable for you as possible. Give us a try!  To start your design there is a $100 fee, and if you have us make the design, that fee is credited towards your custom piece.  
This is a family-owned company with four generations of jeweler expertise passed down to Louis Mastro. His family has worked for many of the top fine jewelry manufacturers and designers in the jewelry industry for over 100 years and, in that time, experience and talent has been passed down from one generation to the next.
With access to computers and new technologies in the past 10 years, designing jewelry has become an art in itself. With computer-aided design, you see the jewelry design in the exact 3D view that will be created. No more guesswork. We have been working with CAD in the jewelry industry for the past 10 years, becoming experts in many jewelry design software programs and creating the ability to design almost anything imaginable.

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Call Us Today • (209) 588-8787


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Sonora Jewelry Design

94 S. Washington St.
Sonora, CA 95370

Phone: (209)588-8787
Business Hours
Tues-Sat: 11:00am-5:00pm
IN BUSINESS SINCE 1979

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Designing Appointment:

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