Justin K Prim

Past Talks

Recounting all the lectures I’ve given 

Tucson After-Party Guide 2023

A guide to all the evening and extra events at the Tucson Gem Show 2023…

The History of London’s Lapidaries

by Justin K Prim

“I want to buy a cheap or used faceting machine”

The official guide.

How to Get Your Mind Blown by H.P. Lovecraft and Alan Moore in 7 Epic Steps

The Art and Joy of Recutting Gemstones

Over the past few years, the demand for well-cut gemstones has…

A Colored Gemstone Buyers Guide to Cut Styles

Once upon a time, buyers of colored stones were solely…

Human Perception and the Color of Gemstones

Originall published in GAMMA The ICA | GemLab Journal — Volume 1 Issue 2

I Dream of Being a Gemcutter

How to make your professional dream a reality.