Gem Appraisals Unlimited, LLC

Glendora, California, USA

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Jewelry Appraiser Glendora Los Angeles
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About this Appraiser

Master Gemologist Appraiser® and Accredited Senior Appraiser Teri Brossmer, heads this highly respected jewelry appraisal practice that performs jewelry valuation, diamond grading and gemstone identification. Ms Brossmer's gem lab is based in Glendora CA and carries out appraisals on fine and antique jewelry, watches and diamonds throughout the Greater Los Angeles area, to the criteria demanded by the Uniform Standards of Professional Appraisal Practice (USPAP).

Jewelry & Diamond Appraisal Services

Glendora Office - Appraisal and gemological services are provided from Teri's office on a while-you-watch basis, so your precious items never leave your sight and your comprehensive valuation report will normally be completed during your appointment. In some cases, where a quantity of jewels are being examined or where extensive research is required, the documentation will follow in a few days.

Mobile Gem Lab - This business also offers a mobile appraisal service as Teri has a fully portable gemological laboratory for clients in Riverside, Ontario, Fontana and throughout Inland Empire. The examination of your jewelry can be carried out in your office, home or some other secure location. Which ever service you select, you will receive the same professional service and expertly produced valuation report.

Clients for both on-site and off-site appraisal consultations include members of the public, the insurance and financial business sectors and law enforcement agencies. As a Graduate Gemologist and a Certified Insurance Appraiser, you can be assured that your appraisal documentation will be accurate, detailed and comprehensive.

Teri Brossmer, MGA, ASA, GG (GIA)

Ms Brossmer is a Master Gemologist Appraiser® and an Accredited Senior Appraiser with the American Society of Appraisers, and also a Senior Member of the National Association of Jewelry Appraisers, one of only very few professionals to hold all these titles. She is the past Discipline Chair of the American Society of Appraisers Gems and Jewelry discipline and currently serves as a course developer and instructor for appraisal theory courses presented in the U.S. and internationally. Ms. Brossmer also currently serves as President of the board of directors of the Accredited Gemologists Association and is certified as a USPAP instructor by the Appraisal Qualifications Board. Teri is also a Member of the Women's Jewelry Association and the Jewellery Valuers Association.

Please use the contact links at the top of this page to contact Ms Brossmer or visit the Gem Appraisals Unlimited website.


The Business

  • Private Practice & Trade Appraiser
  • Business mix: Mainly appraisals
    Also a Broker & Educator
  • Principal + 0 staff Appraisers
  • Mon - Fri: 9am to 5pm
  • Mobile lab & at Appraiser's office


  • Per-item and time-based fees
  • All major cards accepted
  • Full appraisal reports start at $175


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  • GG
  • MGA


  • AGA, GIA Alumni
  • WJA

Curriculum Vitae


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Gem and diamond expert in Los Angeles


Gem Appraisals Unlimited, LLC
158 No. Glendora Av
Suite K
CA 91741

  • Accessible
  • Free, on-site
  • Visitors by appointment only
  • View large map


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