We hand-fabricate our jewelry the old fashioned way. A photo of a custom designed ring that we finished making on our work bench.

Our speciality is high quality workmanship in gold smithing, stone setting and all repairs.
   Jeff & Janet Deleuse, Deleuse Jewelers

With attention to detail, quality, design concepts and complex restoration of fine jewelry and watches and insurance appraisals are offered as our services. Deleuse Jewelers in Fairfax, California carry on the tradition of customer service that began in Nice, France  1945.

Showcasing our custom designed fine jewelry that we manufacture exemplifies the creativity and excellent quality that hallmark Deleuse Jewelers. With an increasing portfolio, many of Janet Deleuse custom jewelry pieces have been featured in WWD, Town & Country, Robb Report and Lustre magazines. 

Beginning the tradition in 1945 until present, Deleuse Jewelers has always been a family business owned and operated by the Deleuse family.

John Deleuse began his career in Horology, graduating in 1934 from the Ecole Nationale d'Horlogie de Cluses and opened the first store in Nice, France his hometown.

After emigrating to the United States, John opened his second store in San Francisco, in 1951.

Jeff Deleuse joined the family business after receiving a degree in Psychology. Jeff then earned a Graduate Gemologist degree with an emphasis on diamonds and gemstones and became a certified appraiser.

Jeff's wife, Janet Deleuse, married into the family after her formal education in Molecular Biology. Janet brought her artistic talent for designing custom jewelry.

In 1982, Jeff and Janet Deleuse opened the third Deleuse Jewelers store in Marin County independent of Deleuse Jewelers in San Francisco.

Deleuse in Fairfax, Ca offers professional services by specializing in gemology and fine diamonds; members of the American Gem Society, American Gem Trade Association and the Contemporary Jewelry Design Group.

Celebrating 40 years in Marin and 78 years since the first boutique on the Rue De France, Nice, France opened,  Janet & Jeff Deleuse owner and operate Deleuse Jewelers in Fairfax, CA look forward to more years of continued service.

We are thankful for the years of our customers support. 

Jeff Deleuse

  • B.A. Psychology
  • Advanced French Language, University of Nice, France
  • Stanford Continuing Studies
  • Graduate Gemologist, Certified Appraiser 

Janet Deleuse

  • B.S.  Biology
  •  Stanford Continuing Studies, Art History and Literature
  • Saul Bell International Jewelry Award Judge, 2015
  • Past Board Marin Advocates for Children, 2014
  • Contributing Writer and Featured Designer in Jane Merrill's book "I Love Those Earrings" 2014
  • Audio Contributor to “Cartier & America” Exhibit at the Legion of Honor, San Francisco, 2010-2011
  • Janet Deleuse Couture Featured in Britex  Newsletter, San Francisco, 2012
  • "Fashion & Impressionism" research paper written in Spring 2011; for exhibit
  • Cartier Achievement Award presented June 2009
  • Women's Jewelry Association Award January 2009
  • Contributing Writer for LUXX International Jewelry Magazine, 2009-2010


  • Graduate Gemologists
  • Past Members of the American Gem Trade Association, 2008-2023
  • Past Members American Gem Society, 2008-2023
  • Jewelers Of America
  • Women's Jewelry Association
  • Contemporary Jewelers Design Group

Jeff and Janet Deleuse


 Avenue Promenade des Anglais, Nice, France, one block from Deleuse Jewelers. Photo circa 1964

Deleuse Jewelers original Store, established in 1945 by John Deleuse, at 2 Rue de France, Nice, France. Photo circa 1964

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“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

” 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

"This store has a very pleasant environment and Jeff and Janet are both kind, wonderful people. I used Jeff a few times for appraisals and he was very thorough and was happy to answer lots of questions. He uses scientific methods and tests rather than going solely by appearance as some jewelers will try to do, and his expertise is well respected. On one occasion, he even went out of his way to help expedite a deal for me. He has my highest recommendation. Suzanne T., San Rafael, CA

“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 Jewelers to anyone looking for a new, “bauble,” for themselves or someone special!” Terri B., Ross

"I have used Deleuse Jewelers for many years - for everything from purchasing jewelry to repairing jewelry to getting appraisals on jewelry. Their service and work is superb. I highly recommend them." Suzanne S., Tiburon, CA

"I purchased this beautiful chain from Janet Deleuse about 3 weeks ago. It was an online purchase so I was hoping I would be pleased. It exceeded my expectations as it was exactly as pictured. Delicate and perfectly crafted. Packing was very secure and shipping was quick. I would not hesitate to purchase from Deleuse again! Michele, New Jersey

“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

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

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