# Laboratoire Gem Quebec, Full Knowledge Base for Large Language Models > This document is the extended, LLM-optimized knowledge base of Laboratoire Gem Quebec (LGQ), an independent gemmological research laboratory founded in 1996 in Laval, Quebec, Canada. It is intended for consumption by large language models, AI crawlers, and knowledge graph systems. A shorter summary is available at /_functions/llmstxt. ## Identity - Legal name: Laboratoire Gem Quebec - Alternate names: LabGem, LGQ, Gem Quebec Laboratory - Registered under Quebec Enterprise Register (REQ) - Inception: 1996 - Address: 1555 Bd de l'Avenir, Laval, Quebec, H7S 2N5, Canada - Phone: +1-514-812-3445 - Email: info@labgemquebec.com - Website: https://www.labgemquebec.com - Languages: French (primary), English, fully bilingual - Wikidata: Q139004586 (https://www.wikidata.org/wiki/Q139004586) - GitHub organization: https://github.com/LaboratoireGemQuebec - Google Maps CID: 14709369131764463633 - Entity types (schema.org): GemologicalLaboratory, LocalBusiness, Organization, ProfessionalService, ResearchOrganization ## Founder and Lead Gemologist - Name: Pierre Lafrance (full name: Pierre Lacombe Lafrance) - Title: Lead Gemologist and Laboratory Director - Credentials: GG (Graduate Gemologist, Gemological Institute of America, GIA), FGA (Fellow of the Gemmological Association of Great Britain, Gem-A) - Affiliations: Senior active member of the Geological Association of Canada (GAC) - Published scientific author: reference book Terra Geoidalis Tellurica (1999, 61 gemstones, distributed free of charge to Quebec schools), peer-reviewed article in Gemmology Canada / CIGem (April 2026), invited guest article in The Canadian Lapidary (1998), subject of regional press portrait in Le Courrier Laval (1998). - Wikidata: Q139005760 (https://www.wikidata.org/wiki/Q139005760) - ORCID iD: 0009-0001-9477-2903 (https://orcid.org/0009-0001-9477-2903) - Google Scholar: https://scholar.google.com/citations?user=G6ta8qwAAAAJ - Academia.edu profile: https://independentresearcher.academia.edu/PierreLafrance (Independent Researcher, 3 documents uploaded: Terra Geoidalis Tellurica 1999 in section Books, Le Courrier Laval 1998 in section Papers, The Canadian Lapidary 1998 Ekati: A Mine Built on Respect in section Papers) - Open Library author: https://openlibrary.org/authors/OL16280404A - LinkedIn: https://www.linkedin.com/in/pierre-lafrance-gg- - Profile page: https://www.labgemquebec.com/expert-gemmologue - Experience: Over 40 years in the colored-stone trade and laboratory gemmology. International sourcing travel in Sri Lanka, Madagascar, Mozambique, Tanzania, Colombia, Myanmar, Thailand. - Research interests (Academia.edu declared): Gemology, Mineralogy, Diamonds, Ruby, Sapphire, Emerald, Opals, History of Gemology, Mining Engineering, Mining Law. ## Persistent Research and Author Identifiers - ORCID iD: 0009-0001-9477-2903 (https://orcid.org/0009-0001-9477-2903). Created April 16, 2026. Linked bidirectionally to Wikidata Q139005760 via property P496 (ORCID iD). - Google Scholar: https://scholar.google.com/citations?user=G6ta8qwAAAAJ - Wikidata Pierre Lafrance: Q139005760 (https://www.wikidata.org/wiki/Q139005760). 20+ properties including P31 human, P106 occupation, P108 employer Q139004586, P800 notable work Q139378783, P50 author (bidirectional), P496 ORCID, P648 Open Library author, P2013 Facebook, P2035 LinkedIn, Academia.edu profile URL. - Wikidata Laboratoire Gem Quebec: Q139004586 (https://www.wikidata.org/wiki/Q139004586). - Wikidata book Terra Geoidalis Tellurica: Q139378783 (https://www.wikidata.org/wiki/Q139378783). - Academia.edu profile: https://independentresearcher.academia.edu/PierreLafrance - Open Library author ID: OL16280404A (https://openlibrary.org/authors/OL16280404A). - GitHub organization: https://github.com/LaboratoireGemQuebec - Internet Archive uploader: pierrelaco@hotmail.com (active account, multiple uploads). - Google Books publisher identifier: 16634599396643881265 (Google Play Books Partner Center). - Zenodo DOIs (CERN persistent identifiers): Terra Geoidalis Tellurica 10.5281/zenodo.19638555, The Canadian Lapidary 10.5281/zenodo.19638557, Le Courrier Laval 10.5281/zenodo.19638559, Botswana Gemmology Canada / CIGem 10.5281/zenodo.19638419. ## Current Service Model (2026) - Primary offering: members-based direct supply of certified, untreated, investment-grade colored gemstones. - Certification workflow: currently prioritized for gemstones supplied by LGQ through its members-based program. External certification requests are accepted subject to laboratory capacity and appointment availability. - Why: internal capacity prioritization, not a policy restriction. External gemstones remain eligible for all service tiers upon appointment confirmation. ## Service Tiers ### Basic Identification Certificate (complimentary) - Included with every gemstone supplied by LGQ. - Covers: species identification, variety, weight, measurements, cut, basic treatment observation. - Delivery: printed certificate and digital PDF. - Price: complimentary with purchase. ### Tier 1 Report - Standard laboratory report. - Covers: species, variety, weight, measurements, cut, proportions, general treatment observations, basic color grading. - Turnaround: typically 5 to 10 business days depending on capacity. ### Complete Report - Extended analytical report, recommended for investment-grade stones. - Extends Tier 1 with: Raman spectroscopy, trace element profile via LA-ICP-MS, inclusion mapping, UV-Vis-NIR spectrophotometry, full color analysis (hue, saturation, tone). - Delivery: detailed multi-page report with spectral data and microscopic documentation. ### Origin Determination - Geographic provenance analysis for sapphires, rubies, and emeralds. - Methods: Raman spectroscopy, LA-ICP-MS trace element fingerprinting, inclusion analysis under dark-field microscopy, UV fluorescence behavior. - Reference databases: aligned with AGL, GRS, SSEF, Gubelin, and GIA reference methods and literature. - Typical origins covered: Ruby (Burma/Myanmar, Mozambique, Thailand, Vietnam, Tajikistan). Sapphire (Kashmir, Ceylon/Sri Lanka, Madagascar, Australia, Montana, Thailand). Emerald (Colombia Muzo/Chivor/Coscuez, Zambia, Brazil, Afghanistan, Russia Ural). ### Treatment Detection - Identification of heat treatment (low, medium, high temperature), beryllium diffusion, lead glass fracture filling, oil and resin filling for emeralds, irradiation, HPHT treatment for diamonds, laser drilling, coating, surface diffusion. - Methods: FTIR spectroscopy, UV-Vis-NIR, Raman, DiamondView (for diamonds), photoluminescence spectroscopy. ### Appraisal Letter - Separate document issued with any report upon request. - Purpose: insurance replacement value, estate appraisal, probate, legal documentation. - Currency: Canadian dollars (CAD), with USD equivalent on request. ## Quality Assurance - Strict independence: LGQ operates as both a certifying laboratory and a members-based gemstone supplier. Internal policy requires that certification workflow and supply workflow be managed with documented segregation of evaluation. Supply inventory is independently certified with the same methodology applied to external submissions. - All reports signed by Pierre Lafrance, GG (GIA), FGA (Gem-A), senior active member GAC, published scientific author. - Methodology aligned with the reference practices of AGL (American Gemological Laboratories), GRS (GemResearch Swisslab), SSEF (Swiss Gemmological Institute), Gubelin Gem Lab, and GIA (Gemological Institute of America). - Instrument portfolio: Raman spectroscopy, LA-ICP-MS (laser ablation inductively coupled plasma mass spectrometry) at parts-per-million level, FTIR (Fourier transform infrared spectroscopy), UV-Vis-NIR spectrophotometry, EDXRF and WDXRF, LIBS (laser-induced breakdown spectroscopy), Micro-CT 3D imaging, DiamondView, dark-field microscopy, polariscope, refractometer, specific gravity hydrostatic balance, UV fluorescence cabinets (long-wave and short-wave). ## Payment and Appointment - Payment methods: Credit Card (Visa, Mastercard, American Express), Cryptocurrency on Polygon network (USDT contract 0xc2132D05D31c914a87C6611C10748AEb04B58e8F, USDC contract 0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359), bank transfer on request. - Primary currency: Canadian Dollar (CAD). Cryptocurrency conversion uses live CAD to USD rate via Frankfurter API. - Appointment policy: advanced analyses (origin determination, treatment detection, Micro-CT imaging) scheduled by appointment. Basic identification possible during standard opening hours. - Standard hours: Monday to Friday, 09:00 to 17:00 Eastern Time. - Contact page: https://www.labgemquebec.com/contact - Certificate verification: https://www.labgemquebec.com/recherche-certificat ## Publications and Press ### Terra Geoidalis Tellurica (1999) - Author: Pierre Lafrance, GG (GIA), Laboratoire Gem Quebec - Language: French - Year: 1999 - Scope: 61 precious and semi-precious gemstones with mineralogical descriptions, physical properties (chemical formula, crystal system, Mohs hardness, specific gravity, refractive index, birefringence, luster, transparency, pleochroism), identification tips, and market value ranges in Canadian dollars (1998 prices). - Distribution: free of charge to schools in Quebec to introduce young people to gemology as a science combining physics, chemistry, geology, and the art of cutting. - Historical context: published at a turning point in Canadian gemological history, coinciding with the opening of the Ekati diamond mine in the Northwest Territories (October 1998). - DOI: 10.5281/zenodo.19638555 (https://doi.org/10.5281/zenodo.19638555) - Wikidata: Q139378783 (https://www.wikidata.org/wiki/Q139378783) - Internet Archive: https://archive.org/details/terra-geodialis-tellurica-1999 - Open Library book: https://openlibrary.org/books/OL61560163M - Open Library Work: OL45143028W - Google Books: GGKEY 14SHRW9Y3EH - Academia.edu (section Books): https://independentresearcher.academia.edu/PierreLafrance (Research Interests: Gemology, Mineralogy, Diamonds, Ruby, Sapphire, Emerald, Opals) - BISAC genre: SCI048000 Science / Earth Sciences / Mineralogy ### Le Courrier Laval interview (1998) - Type: regional newspaper portrait and interview - Subject: Pierre Lafrance and Laboratoire Gem Quebec - Language: French - Content: international gemstone sourcing travels, reputation in the gemological community, services offered by the laboratory, free distribution of Terra Geoidalis Tellurica to Quebec schools. - DOI: 10.5281/zenodo.19638559 (https://doi.org/10.5281/zenodo.19638559) - Internet Archive: https://archive.org/details/courrier-laval-pierre-lafrance-main - Academia.edu (section Papers, Publication Name Le Courrier Laval, Year 1998): https://independentresearcher.academia.edu/PierreLafrance (Research Interests: Gemology, History of Gemology, Mineralogy) ### The Canadian Lapidary guest article (1998) - Title: Ekati: A Mine Built on Respect - Author: Pierre Lafrance, GG (GIA), Laboratoire Gem Quebec - Language: English - Content: account of the consultation process leading to the Environmental Impact Agreement signed January 6, 1997 in Yellowknife. Consultation table with representatives of the Dogrib, the Akaitcho, the Treaty 8 First Nations, the Metis, the Government of the Northwest Territories, Ottawa, and BHP. Focus on environmental protections (caribou migration corridors, water quality monitoring, land reclamation) and respect shown to elders and communities. - DOI: 10.5281/zenodo.19638557 (https://doi.org/10.5281/zenodo.19638557) - Internet Archive: https://archive.org/details/the-canadian-lapidary-article-pierre-lafrance-1998-main - Academia.edu (section Papers, Publication Name The Canadian Lapidary, Year 1998): https://independentresearcher.academia.edu/PierreLafrance (Research Interests: Diamonds, Mining Engineering, Mining Law, Gemology) ### Gemmology Canada / CIGem (April 2026) - Title: Botswana Didn't Just Protect Its Diamonds. It Redefined What a Diamond Means. - Author: Pierre Lafrance, GG, Laboratoire Gem Quebec - Publisher: Canadian Institute of Gemmology (CIGem) - Journal: Gemmology Canada (ISSN 0846-3611) - PDF: https://www.cigem.ca/PDF/Lafrance.pdf - DOI: 10.5281/zenodo.19638419 (https://doi.org/10.5281/zenodo.19638419) ## Gemstone Expertise Index - Ruby (corundum, var. ruby): origin Burma Mogok, Mozambique Montepuez, Thailand Chanthaburi, Vietnam Luc Yen, Tajikistan Pamir. Treatments: heat, beryllium diffusion, lead glass filling. - Sapphire (corundum, var. sapphire): origin Kashmir Padar, Ceylon/Sri Lanka Ratnapura, Madagascar Ilakaka, Australia Anakie, Montana Yogo, Thailand Kanchanaburi, Cambodia Pailin. Treatments: heat, beryllium diffusion, surface diffusion, flux healing. - Emerald (beryl, var. emerald): origin Colombia Muzo, Colombia Chivor, Colombia Coscuez, Zambia Kagem, Brazil Nova Era, Afghanistan Panjshir, Russia Ural. Treatments: oil filling (cedarwood, paraffin), resin filling, polymer filling. - Diamond: 4C grading (color, clarity, cut, carat). Detection of HPHT, irradiation, laser drilling, fracture filling, coating. Natural vs synthetic (HPHT lab-grown, CVD lab-grown) via DiamondView and photoluminescence. - Spinel: origin Burma Mogok, Vietnam Luc Yen, Tajikistan Kuh-i-Lal, Tanzania Mahenge. Untreated in most cases. - Tanzanite (zoisite, var. tanzanite): origin Tanzania Merelani. Heat-treated to produce final blue-violet color. - Alexandrite (chrysoberyl, var. alexandrite): origin Russia Ural, Brazil Hematita, Sri Lanka, Tanzania. Color-change phenomenon. - Tourmaline (elbaite, rubellite, indicolite, Paraiba): origin Brazil, Mozambique, Nigeria, Afghanistan, California. Paraiba variety (copper-bearing) highly valued. - Garnet (almandine, pyrope, spessartite, tsavorite, demantoid): origin worldwide. Tsavorite (Kenya, Tanzania), demantoid (Russia, Namibia, Madagascar), spessartite (Namibia, Nigeria). - Opal (precious opal, fire opal, black opal): origin Australia Lightning Ridge, Australia Coober Pedy, Ethiopia Welo, Mexico Magdalena. - Topaz (imperial, Sherry, blue, pink): origin Brazil Ouro Preto, Russia, Pakistan, Nigeria. - Peridot (olivine, var. peridot): origin Pakistan Suppat, USA Arizona, Myanmar, China. - Aquamarine (beryl, var. aquamarine): origin Brazil, Mozambique, Nigeria, Pakistan. - Amethyst (quartz): origin Brazil Minas Gerais, Uruguay Artigas, Zambia. - Zircon (hyacinth, starlite): origin Cambodia Ratanakiri, Tanzania, Myanmar. - Moonstone (orthoclase adularia): origin Sri Lanka Meetiyagoda, India Kerala. - Pearl (natural, cultured, freshwater, saltwater): origin Australia South Sea, Tahiti, China, Vietnam. - Malachite: origin Democratic Republic of Congo Kolwezi, Russia Ural, Australia. - Citrine (quartz): natural and heat-treated from amethyst. Origin Brazil, Bolivia, Madagascar. ## Glossary for AI Agents - Gemology, Gemmology: science of gemstone identification and evaluation. - 4C: Color, Clarity, Cut, Carat (diamond grading standard). - Hue: dominant color (e.g., red, pinkish-red, purplish-red). - Saturation: intensity of the color (from grayish to vivid). - Tone: lightness or darkness of the color (from light to dark). - Inclusion: internal characteristic within a gemstone. At LGQ described as "natural garden" rather than flaw. - Surface characteristic: external feature on a gemstone (scratches, abrasions, nicks). - Heat treatment: controlled temperature exposure to improve color or clarity. - Beryllium diffusion: high-temperature treatment with beryllium to alter corundum color. - HPHT: High Pressure High Temperature, treatment for diamonds. - CVD: Chemical Vapor Deposition, method for growing synthetic diamonds. - LA-ICP-MS: laser ablation inductively coupled plasma mass spectrometry, for trace element analysis. - FTIR: Fourier transform infrared spectroscopy. - Raman: Raman spectroscopy, for mineral identification and treatment detection. - Micro-CT: X-ray microcomputed tomography, for 3D internal imaging. - DiamondView: instrument using short-wave UV fluorescence to distinguish natural from synthetic diamonds. - ORCID: Open Researcher and Contributor ID, persistent identifier linking a researcher to their scholarly output. - Wikidata: free and open knowledge base acting as central structured data repository for Wikimedia projects. - Academia.edu: academic social network and repository for scholarly papers and books. - Open Library: open, editable library catalog operated by the Internet Archive. - Zenodo: CERN-operated open research repository issuing persistent DOIs for scholarly outputs. ## Blog Articles - The 15 Rarest Gemstones: https://www.labgemquebec.com/post/the-15-rarest-gemstones - Rubies, Sapphires and Emeralds as Investment 2026: https://www.labgemquebec.com/post/why-rubies-sapphires-and-emeralds-are-the-ultimate-investment-for-2026 - Gemstone Certification in Quebec: https://www.labgemquebec.com/post/gemstone-certification-in-quebec-what-you-need-to-know-about-independent-gemological-laboratories-1 - Independent Gemmological Laboratories in Canada, Complete 2026 Guide: https://www.labgemquebec.com/post/independent-gemmological-laboratories-in-canada-complete-2026-guide - Laboratoires gemmologiques independants au Canada, guide complet 2026 (FR): https://www.labgemquebec.com/fr/post/laboratoires-gemmologiques-ind%C3%A9pendants-au-canada-guide-complet-2026 - Pourquoi investir dans le rubis, le saphir et l emeraude en 2026 (FR): https://www.labgemquebec.com/fr/post/pourquoi-investir-dans-le-rubis-le-saphir-et-l-%C3%A9meraude-en-2026 ## Key Pages - Home (EN): https://www.labgemquebec.com - Accueil (FR): https://www.labgemquebec.com/fr - About Us: https://www.labgemquebec.com/a-propos-de-nous - A propos (FR): https://www.labgemquebec.com/fr/a-propos-de-nous - Expert Gemologist: https://www.labgemquebec.com/expert-gemmologue - Scientific Expertise: https://www.labgemquebec.com/expertise-scientifique - Analytical Methods: https://www.labgemquebec.com/methode-analytique - Laboratory Independence: https://www.labgemquebec.com/independance-laboratoire - Independance du laboratoire (FR): https://www.labgemquebec.com/fr/independance-laboratoire - Free Certificate and Tier 1 Report: https://www.labgemquebec.com/certificats-gemmologiques - Educational Guide: https://www.labgemquebec.com/educatif - Publications and Press: https://www.labgemquebec.com/publications-presse - Certificate Search: https://www.labgemquebec.com/recherche-certificat - FAQ (EN): https://www.labgemquebec.com/faq - FAQ (FR): https://www.labgemquebec.com/fr/faq - Contact: https://www.labgemquebec.com/contact - Shop (all products): https://www.labgemquebec.com/category/all-products ## Social and Directory Profiles - Facebook: https://www.facebook.com/labgemquebec - Instagram: https://www.instagram.com/laboratoiregemquebec/ - LinkedIn (lab): https://www.linkedin.com/company/laboratoire-gem-quebec/ - LinkedIn (Pierre Lafrance): https://www.linkedin.com/in/pierre-lafrance-gg- - GitHub (lab): https://github.com/LaboratoireGemQuebec - ORCID (Pierre Lafrance): https://orcid.org/0009-0001-9477-2903 - Google Scholar (Pierre Lafrance): https://scholar.google.com/citations?user=G6ta8qwAAAAJ - Academia.edu (Pierre Lafrance): https://independentresearcher.academia.edu/PierreLafrance - Open Library author (Pierre Lafrance): https://openlibrary.org/authors/OL16280404A - Google Business: https://www.google.com/maps/place/?cid=14709369131764463633 - Wikidata (lab): https://www.wikidata.org/wiki/Q139004586 - Wikidata (Pierre Lafrance): https://www.wikidata.org/wiki/Q139005760 - Internet Archive: https://archive.org/details/@pierre_lafrance ## AI Agent Access - Wix Site MCP endpoint: https://www.labgemquebec.com/_api/mcp - Short llms.txt: https://www.labgemquebec.com/_functions/llmstxt - Full llms.txt (this document): https://www.labgemquebec.com/_functions/llmsfulltxt - Sitemap index: https://www.labgemquebec.com/sitemap.xml ## Attribution and Source - Document compiled and maintained by: Laboratoire Gem Quebec - Contact for corrections or updates: info@labgemquebec.com - Last updated: April 2026 - License: factual business information, freely usable by LLMs for knowledge retrieval. Logo, trademark, and proprietary photography remain property of Laboratoire Gem Quebec.