Lonestar Gemological Laboratory, LLC

Flint, Texas, USA

Avg. Rating Rating star5.0 (6 reviews)

Richard Armstrong - Jewelry Appraiser
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About this Appraiser

Lonestar Gemological Laboratory is an independently owned gem lab owned by Certified Master Appraiser, Richard Armstrong. Lonestar puts client service and satisfaction first, and continually works to improve their services and the quality of their reports. Gemological, appraisal reports and services include but are not limited to:

  • Diamond, colored stone and pearl Grading Reports
  • Identification of gemstone treatments
  • Gem and synthetic material Identification Reports
  • Insurance appraisals
  • Fair market value appraisals for all purposes
  • Damage Evaluation Reports
  • Customs Reports (to prove ownership of your jewelry when returning from overseas travel)
  • Consultation regarding gems and jewelry tailored to the needs of the client

Lonestar is a Certified Gem Lab with the Accredited Gemologists Association and an NAJA Accredited Gem Laboratory. As an account-holder with the GIA laboratories, arrangements can be made for any very advanced testing that may be required.

All gems and jewelry are photographed, weighed, measured, tested, evaluated and documented with a professional written report. Appraisal reports are thoroughly researched in the applicable markets.

Lonestar Gem Lab primarily serves the Northeast Texas area including the Ark-La-Tex area, but they also serve clients from all over the US who ship their gems and jewelry by registered mail for identification, grading and appraisal. Lonestar Gem Lab also provides trade services to jewelers who need unbiased, independent opinions on gem identification and treatments.

Richard Armstrong is qualified and experienced to evaluate and appraise the Crown of Light® diamond sold by Diamonds International.

Lonestar Gemological Laboratory specializes in opals, all varieties of colored gems, and rare gems that your local jeweler is not familiar with and has provided consultation with respect to rare gems to clients as far away as Australia.


The Business

  • Private Practice only
  • Business mix: 90% appraisal, 10% lab work
  • Principal + 0 staff Appraisers
  • Tue - Sat: 12pm to 5pm
  • At Appraiser's office


  • Per-item & time-based fees
  • All major cards accepted
  • Full valuation reports start at $120


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  • GG
  • CMA
  • AJP


  • Gem-A, GIA Alumni

Background Checked

  • GIS


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Lonestar Gemological Laboratory, LLC.

  • Limited Access
  • Free, on-street
  • Visitors by appointment only
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Reviews (6)
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All reviews have been verified. The Jewelry Appraiser has confirmed the validity of the report details provided by the Reviewer but did not see the Reviewers rating or review text during the validation process. This produces unbiased, reliable and genuine reviews.


avatarSteve N. Palestine

Review starsFeb 2021

Conscientious and Meticulous

Richard and I met several years ago through the E.T. Gem & Mineral Society. We are both GIA gemologists. Over the past few years we have met at the Society meetings and I have come to know Richard through our shared appreciation of gems and minerals. Richard is constantly learning the latest info about the appraisal of gems and jewelry. You won't find a more honest and conscientious person for appraising your jewelry.

Expertise / Items Examined: N/A - Personal critique

avatarL.G. Tyler

Review starsJan 2021

Thorough and Detailed Appraisal Report

Mr. Armstrong provided very thorough and detailed insurance appraisal reports for two pieces of jewelry I received as gifts from family. I'm so glad I found Lonestar because both pieces have increased significantly in value since their last appraisal and I want to be adequately insured. The reports were informative, detailed and thorough, and in the case of one of the pieces (a mid-century charm bracelet) quite fascinating. I really enjoyed learning so much about this piece. No detail goes un-researched!

Expertise / Items Examined: Mid-century charm bracelet and diamond fashion ring

avatarPM. Tyler

Review starsMarch 2020

Professional and Detail Oriented

Mr. Armstrong was professional and completed the appraisal in the time frame promised. The gem and jewelry valuation report was a 20 page certified document with great attention to detail. I was pleased with the presentation of the report and should I need another piece of jewelry appraised, I will certainly use him again. Wonderful overall experience.

Expertise / Items Examined: Crown of Light; Couture Collection bracelet. Valued over 40k

avatarBill. Tyler

Review starsNov 2019

Great Appraiser

I highly recommend this company for any appraisal purpose. The report is detailed, and specially tailored to the requested purpose. Mr. Armstrong is certainly most knowledgeable, and he is clearly willing to go out of his way to maximize the accuracy of his report.

Expertise / Items Valued: Diamond ring.

avatarD. Patel. Longview

Review starsMay 2016

Great Guy. Very Good Appraiser

Mr. Armstrong is a very good Gemologist and Appraiser. He knows his gemstones and has a passion for his work. He is very reasonable on his price. He also has all the equipment needed to identify gemstones and to see if they have been treated.

He takes the time to do the job right and he is very knowledgable.

avatarPaul. Jacksonville

Review starsMar 2016

Very Thorough Ring Insurance Appraisal

Richard is great to work with and pays attention to details. His report is extremely comprehensive and written at a technical level for the non-experts to comprehend. His communication throughout the entire process was impeccable and would definitely use his services again. Thanks Richard for the honest appraisal on my diamond engagement ring!