The Practical Guide to Jewelry Appraising
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The Practical Guide to Jewelry Appraising


Cos Altobelli
Certified Gemologist Appraiser
American Gem Society


This is the definitive work in jewelry appraising.

Important topics include:

  • 24 different types of appraisals and reports
  • Take-in Procedure
  • Valuation of Treated Gemstones
  • Marketing and Advertising
  • Fees and Updates
  • Specific Descriptions
  • Fair Market Value
  • Documentation
  • Mediation and Arbitration
  • Sample Appraisals
  • Contracts and Forms
  • Expert Witness
  • 16 Personal Case Histories

It is a common mistake to think that gemological knowledge is all that is required in appraising jewelry. This book introduces the reader to the methodologies of appraising and setting up a professional appraisal service.

$69.00 plus shipping
Member price $59.00 plus shipping


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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.

American Gem Society

8881 W. Sahara Ave. Las Vegas, NV 89117 (866) 805-6500