Ronald E. Bonanno, CG
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Last updated: 10/8/2018
Ronald E. Bonanno, CG
Certified Gemologist
Professional Information
Josephs Jewelers
215 10th St
Ste 100
Des Moines
50309-3608  United States
 [ Map ]
515 273-2589 (Phone)
515 273-2525 (Fax)
Visit Website »
  store manager
Additional Information
34 years in Jewelry industry 29 years with Josephs, 5 years with Raskin Jewelers Prescott Arizona
Annual Certification, Certified Gemologist
Social/Volunteer Organizations
member or Des Moines Iowa Downtown Advocacy Board


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Mission Statement

The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.

The Society is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.

AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.

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