Starla Turner
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Starla TurnerStarla Turner work as the staff gemologist at Lang Antiques in San Francisco. Her position involves assessing the elements of the vintage jewelry-metals, method and era of manufacture, diamond grading, colored stone identification, and makers mark/hallmark identification. Ms. Turner has the following degrees: Bachelors of Education, Graduate Gemologist, Fellow of the Gemmological Association (distinguished), and is a past Certified Gemologist Appraiser.

She is instructor at the Revere Academy in San Francisco, and a Tutor for the British Gemmological Association of Great Britain, as well as on the Advisory Board for The Guide publication. Ms. Turner is the past Global Chair of the GIA Alumni Association and on the Board of the Golden Gate Chapter.


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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

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