Services, Accreditation’s and Reviews



GIA_logo  ags_logo    AGTAMbrLogoLgColor

Deleuse Jewelers is located in Fairfax, Ca

55 Broadway, Fairfax, Ca

Open Tuesday-Saturday  10:30-4:00                     415-459-3739                  


Shop at your convenience online:   our online store featuring American Designers,  free shipping  in USA.

Continuing the tradition established by John Deleuse in Nice, France in 1945, our family business is still owned and operated by John’s son, Jeff Deleuse. 

  We specialize in the finest quality gems and diamond jewelry, our jewelry is hand-fabricated in 18k gold and platinum.  We adhere to the strict standards of the American Gem Trade Association, American Gem Society and the Gemological Institute.

Jeff Deleuse specializes in appraising diamonds and is a diamond broker.  He also offers the service of buying/selling  gold bullion and gold for recycling.

In addition to our fine quality diamonds, gemstones, pearls and custom designed jewelry, we  are a full service jeweler offering extensive repairs and restoration on all fine jewelry and watches.

Since 1982 we have offered our technical expertise in all jewelry repair and restoration services, including  gold and platinum soldering/metalworking, ring sizing, rebuilding of prongs and tips for stone settings and pearl/bead cleaning and restringing.

 Jeff Deleuse installs watch batteries and bands while you wait, as we have a full selection of watch straps available to choose from.

Jeff Deleuse, Graduate Gemologist and Certified Appraiser, offers formal appraisals for insurance or estate purposes.

Deleuse Jewelers has a complete Gemological Equipment Lab on premises for jewelry appraisals.

  Appraisals are done by appointment only. 415-459-3739

 Accreditation includes diplomas from the Gemological Institute of America and the American Gem Society and thirty-three  years of experience.


Jeff Deleuse

B.A. Psychology, University of Nice, France,  Stanford University Continuing Education 

  • Graduate and Certified Gemologist
  • Certified Appraiser
  •  Members of the American Gem Trade Association
  • American Gem Society
  •  Jewelers Of America

Janet Deleuse

B.S. Molecular Biology,  Stanford University Continuing Education     

  • Saul Bell International Jewelry Award Judge, 2015
  •   Contemporary Jewelry Design Group
  • Women’s Jewelry Association
  •   Cartier Achievement Award presented June 2009
  •  Womens Jewelry Association Award January 2009
  •   Contributing Writer for LUXX International Jewelry Magazine, 2009-2010
  •  Contributor to “Cartier & America” Exhibit at the Legion of Honor, San Francisco, 2010-2011
  •    Janet Deleuse Label Couture Featured in Britex Fabrics Newsletter, San Francisco, 2012
  •    Past Board of Directors, Marin Advocates for Children

“Janet & Jeff designed our wedding rings 5 years ago and I went back to them for another ring for my wife. Excellent design and excellent quality diamonds and aqua marine. They spent a lot of time working with us on the design, selection of the diamond and aqua marine. Worth every penny!” Shawn S., Tiburon, CA

” Beauty, exquisite design, pleasant and personalized attention.  These qualities have  been constant in our 20 years of shopping with Janet and Jeff Deleuse –  Two exceptionally talented and caring people.  The Best!’    Helen P.,Belvedere, CA  

“Janet, thank-you for everything you do.  As I said before, you are truly an artist, and that is why it is so special buying jewelry from you.”  Peter, Atlanta, GA

  Thank you for your exquisite selection. Your store is beautiful and what fun to end my visit with so many jewels!”  Liz F., Corte Madera, CA

“Deleuse Jewelers in Tiburon sells exceptional jewelry of high quality and unique design.  Co-owner Janet Deleuse designs many of the stunning pieces working with each stone’s character to match it to a complementary setting.  If you are looking for a memorable piece of jewelry,  Deleuse Jewelers is the place to go!” Maureen B., San Francisco  

“My husband and I have been customers of Deluse Jewelers for more than 10 years and we have purchased many beautiful and personalized designs.  Janet’s and Jeff’s creations are exceptional.” Diana S., Tiburon, Marin

Janet and Jeff designed and crafted our wedding rings and did a great job.  They worked with existing diamonds we had in an antique ruby cocktail ring, added the sapphire stone and made a beautiful pendant with the ruby.  In addition, they designed earrings for our daughters.  All are still in great shape today.  They are easy to work with and very reliable and trustworthy.” Peg M., San Anselmo  

“Jeff is an incredible gemologist who knows everything there is to know about gem stones.  He is a true professional and can be trusted.  The quality of their work is impeccible and always consistent.  I would recommend Deleuse Jewlers to anyone looking for a new, “bauble,” for themselves or someone special!” Terri B., Ross, CA

“you will not find more stunnimg jewelery that at this store jeff and janet are the nicest people you will ever work with and there  pieces are one of a kind..”  judy r., corte madera, ca

Love working with Janet and her team at Deleuse Jewelers. They always have great jewelry perfect for me and gifts too 🙂 Thank you!!!     Haley, New York, NY                  

About the Author