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Gemstone Faceting History
The Rise of Gem Cutting and the Occult in Renaissance Europe

The Rise of Gem Cutting and the Occult in Renaissance Europe

It’s hard to know where to begin this story because there are many facets that reflect the many colliding cultures of the Renaissance. It’s…
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Justin K Prim
An Afternoon with London’s Oldest Gemcutters
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An Afternoon with London’s Oldest Gemcutters

Exploring British Lapidary Tradition with Charles Matthews Ltd.
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Justin K Prim
Five Hundred Years of Gem Cutting in the Mountains of Jura

Five Hundred Years of Gem Cutting in the Mountains of Jura

Lapidaries on the Swiss/French Border: 1550–2017
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Justin K Prim
Lapidary Technology Through the Ages: Laps and Polish

Lapidary Technology Through the Ages: Laps and Polish

written by Justin K Prim with contributions by Jon Rolfe, Gearloose Lapidary, LLC and Thomas Smith, Adamas Instrument Corporation
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Justin K Prim
A Gems Dealer’s Journal: Interview of Gem Dandy and Lapidary Historian: Justin K Prim

A Gems Dealer’s Journal: Interview of Gem Dandy and Lapidary Historian: Justin K Prim

How have you all been since the last interview? Hope you enjoyed our interview of Josh Saltzman from Nomad’s. Today, in order to further…
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Justin K Prim
How to Choose the *BEST* Faceting Machine for Your Needs

How to Choose the *BEST* Faceting Machine for Your Needs

Choosing the best faceting machine is a very challenging and very personal decision. You first need to assess the various qualities of…
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Justin K Prim
Traveling Abroad with a Faceting Machine

Traveling Abroad with a Faceting Machine

A Gem Cutter’s Travel Guide
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Justin K Prim
A Comprehensive Study of Gem Faceting Classes Around the World

A Comprehensive Study of Gem Faceting Classes Around the World

Faceting, the art of cutting and polishing angled faces on a gemstone to create sparkle and fire, has been practiced for hundreds if not…
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Justin K Prim
The Gem Trade
The Path to Success in the Gem Trade

The Path to Success in the Gem Trade

Originally Published on the Institute of Gem Trading website, May 2018
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Justin K Prim
Hunting for Rubies in Pailin and Chanthaburi
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Hunting for Rubies in Pailin and Chanthaburi

Exploring the Gem Mines of Cambodia and Thailand
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Justin K Prim
How to pay half the price for a GIA Gemology diploma.

How to pay half the price for a GIA Gemology diploma.

A financial guide and travel story.
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Justin K Prim
Exploring the Gem Trade of Sri Lanka

Exploring the Gem Trade of Sri Lanka

Ratnapura, Beruwala, Eheliyagoda, Colombo: September 2017
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Justin K Prim
Bangkok: City of Gemology Schools

Bangkok: City of Gemology Schools

Comparing Thailand’s Top Four
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Justin K Prim
To the San Francisco Gem and Mineral Society: A Love Letter

To the San Francisco Gem and Mineral Society: A Love Letter

Originally Published in the San Francisco Gem and Mineral Society Newsletter, November 2017
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Justin K Prim
My Journey into Gemstones

My Journey into Gemstones

Originally published in the United States Faceters Guild Newsletter, June 2016.
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Justin K Prim
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