Keystone Guild Meeting
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When: Monday, May 7, 2018
6:15 PM
Where: Lester Martin Jewelers
1650 Limekiln Pike B27
Dreshertown Plaza
Dresher, Pennsylvania  19056
United States
Presenter: Renée Newman
Contact: Meredith Schlessinger, CG

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Cost: $30 online, $35 at the door
RSVP: By May 3, 2018
Meredith Schlessinger, CG
Register: Online


The Keystone Guild Presents Renée Newman

21st Century Jade: Why it’s Prized and How It’s Tested and Valued

In partnership with the PA-Delaware Valley Chapter of GIA Alumni Association.

Jadeite and nephrite prices are continuing to reach record highs at jewelry auctions. Before the 2008 Beijing Olympics, nephrite was viewed more as a trinket than as a worthy jewelry material. However, that changed when the Olympic medals were inlaid with nephrite and people learned that nephrite jade was the original Chinese “stone of heaven.” Since then, jade prices have risen rapidly and the allure of nephrite jade in China has soared. Well known designers Todd Reed and Roberto Coin are using nephrite jade in high-end jewelry.

When gem materials go up in value and popularity, the desire to imitate and treat them increases. Some fakes are obvious, while others aren’t. In addition, treated jade, may be worth less than some fakes. In her presentation, Newman will give practical tips on how to distinguish fake and treated jade from natural jade using examples of modern jade jewelry and carvings. Her presentation will help you:

  • Understand why jade is so prized
  • Tell the difference between jadeite and nephrite
  • Determine which types of jadeite and nephrite are most valued
  • Detect fake jade using visual, tactile and auditory non-technical clues
  • Recognize when to be suspicious that jade has been treated with chemicals
  • Appreciate contemporary jade

Books will be available to purchase by cash or check.


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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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