Partners & Affiliations

As a leader in the diamond business, we have affiliations with the most prestigious organizations and councils.


  • Better Business Bureau
  • California Jewelers Association
  • Chamber of Commerce
  • Diamond Council of America
  • Jewelers of America
  • Jewelers Vigilance Committee

Certified Diamontologists

As a member of the prestigious Diamond Council of America, our expert staff of certified Diamontologists will assist you in selecting your diamond.

Certified Diamonds

Robbins Brothers provides independent quality verification for your specific diamond from the following:

  • AIG - American International Gemologists
  • GIA - Gemological Institute of America
  • AGS - American Gem Society
  • IGI - International Gemological Institute
  • EGL - European Gemological Laboratories
  • PGS - Professional Gem Sciences
  • HRD - Hoge Raad Voor Diamant (Belgium Diamond Council)