
Publications and Press
Since the 1990s, Pierre Lafrance has contributed to the dissemination of gemological knowledge through publications, interviews, and collaborations with the specialized press.
Terra Geoidalis Tellurica (1999)
Terra Geoidalis Tellurica is a gemological reference guide published in 1999 by Pierre Lafrance, GG (GIA), of Laboratoire Gem Quebec. The book covers 61 precious and semi-precious gemstones with detailed entries including chemical formula, crystal system, Mohs hardness, specific gravity, refractive index, birefringence, luster, transparency, pleochroism, UV fluorescence, cleavage, dispersion, colors, mining origins, and per-carat values in Canadian dollars (1998 prices).
This book was distributed free of charge to schools in Quebec (Only in french) to introduce young people to gemology, a science that combines physics, chemistry, geology, and the art of gem cutting.
Access the book: Internet Archive | Open Library | Google Books preview

Courrier Laval Interview (1998)
Le Courrier Laval, a regional newspaper in Laval, Quebec, published an article about Pierre Lafrance and Laboratoire Gem Quebec in 1998.
The interview covers Pierre Lafrance's career as a Graduate Gemologist from the Gemological Institute of America (GIA), his international gemstone sourcing travels (Colombia, Myanmar, Sri Lanka, Madagascar, Tanzania), the services offered by his independent laboratory in Laval, and his commitment to gemological education, including the free distribution of his reference book to schools in Quebec. The article also discusses his presentations at international gemological conferences and his perspective on how the field of gemology is evolving in the face of new treatment technologies and the growing presence of synthetic stones on the market.
Read the article: Internet Archive
The Canadian Lapidary (1998)
(Anglais seulement,Traduction)

When BHP Diamonds announced the development of the Ekati mine in the Northwest Territories, it was more than a geological milestone. It was a moment that asked all of us in the Canadian mineral community a simple question: can we do this right?
I had the privilege of being involved, in a modest technical capacity, during the long process that led to the signing of the Environmental Impact Agreement on January 6, 1997, in Yellowknife. My role was limited to reviewing mineralogical annexes and verifying technical data, but it gave me a front-row seat to something remarkable.
What struck me most was not the kimberlite. Geologists had known for years that the pipes beneath Lac de Gras held promise. What struck me was the table itself. Seated around it were representatives of the Dogrib, the Akaitcho, the Treaty 8 First Nations, the Metis, the Government of the Northwest Territories, Ottawa, and BHP. Every voice carried equal weight.
In the 1980s, that would not have happened in Canada. Not like this. The Ekati agreement was built on genuine consultation, not ceremony. The environmental protections written into the accord, including caribou migration corridors, water quality monitoring, and land reclamation obligations, were not afterthoughts.
They were conditions.I remember sitting through sessions where elders spoke about the caribou trails their families had followed for generations. Engineers listened. Not politely. They listened because the agreement required it, and because the people in that room understood that a mine means nothing if the land it sits on is diminished.
The kimberlite at Ekati is rich. The diamonds are real. But a rich pipe guarantees nothing on its own. Nature does what it wants, not what we write in our projections. What matters is how we behave when the projections are good, whether we rush or whether we proceed with the care the land demands.
Canada chose care.
The Ekati agreement is not perfect. No agreement ever is. But it set a standard. It proved that a major mining project on Indigenous land could begin with respect rather than retrofit it later.
As gemologists, we spend our careers studying what comes out of the earth. We grade clarity, we measure colour, we certify origin. But we do not often enough ask how that stone was brought to light. Ekati gives us an answer we can be proud of.
The first commercial diamonds from the Canadian North will reach the market this year. They will be clean stones, in every sense of the word.
That matters. It should matter to every gemologist, every dealer, and every collector who reads this magazine.
I left Yellowknife with a deep respect for the people who built this agreement, all of them. I hope this mine becomes a model, not an exception.
Pierre Lafrance, GG Laboratoire Gem Quebec Laval, Quebec
The Canadian Lapidary, 1998
Read the full article: Internet Archive

Botswana Didn't Just Protect Its Diamonds. It Redefined What a Diamond Means.
Pierre Lafrance, Laboratoire Gem Québec
Article written for Africa and also published by the Canadian Institute of Gemmology (CIGem Gemlab), cigem.ca, 2026
Strategic analysis of Botswana's decision to reposition natural diamonds as a premium product through identity, provenance and traceability rather than price. The article examines the 2025 Gemological Institute of America (GIA) decision to stop applying the 4Cs to lab-grown diamonds, the new international regulatory distinction measuring natural diamonds in carats and synthetic diamonds in grammes, and the position defended by Minister Bogolo Joy Kenewendo at Mining Indaba 2026 in Cape Town.
Topics covered in the article:
• GIA 2025 decision to separate the 4Cs between natural and laboratory-grown diamonds
• Debswana partnership between the Republic of Botswana and De Beers, revenue sharing and the 2025 production cut
• Synthetic diamond market data: 20% market share, 30 to 40% price discount
• Environmental and energy footprint of HPHT and CVD synthesis processes
• Generation Z buying behaviour and the identity positioning of the gemstone
• Responsible supply chains, traceability and provenance in contemporary gemmology
Read the article (published by CIGem Gemlab): cigem.ca
Pierre Lafrance, GG (GIA), Laboratoire Gem Québec

Pierre Lafrance is a Gemological Institute of America (GIA) certified gemologist and laboratory director at Laboratoire Gem Québec, located in Laval, Quebec, Canada. He specializes in the identification, certification, treatment detection, and origin determination of precious and semi-precious stones using advanced analytical instruments, including Raman spectroscopy, LA-ICP-MS, and Micro-CT imaging. Read the article: Internet Archive
