Justin K Prim - Invidious

Justin K Prim

Justin K Prim 💎 The Gemcutters Craft 💎 Magus Gems

Hello and welcome to my channel. The videos you will find here are an expression of my passion for the art and science of gemcutting and the history behind it. Watch as I uncover the secrets behind the gem cutters craft as well as dive deep into the machines being used to cut gems around the world.

Currently, my scope of research begins in Europe in the late 1300's and extends all the way until now. As the channel grows, you will hopefully find a healthy mix of instructional faceting videos (reflecting my role as faceting teacher at the Faceting Apprentice Institute), gem cutting gear vids (reflecting my role as a gear nerd), gem analysis videos, and history-based videos (reflecting my role as a history nerd).

I hope you enjoy the videos and find what you're looking for. If I've left a question unanswered, please leave a comment and let me know. If you want to follow me in other places, click the social media buttons on top.

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1:00

Fable FJM-2025 Mini Budget Faceting Machine

Justin K Prim

Shared 56 years ago

1.7K views

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A great antique faceting machine acquisition trip yesterday in the Jura mountains in France.

Justin K Prim

Shared 56 years ago

1.1K views

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Cutting a unique Maine tourmaline in Maine

Justin K Prim

Shared 56 years ago

5.9K views

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Photographing 120 year old letters from Maine cutters in the George Kunz collection

Justin K Prim

Shared 56 years ago

1K views

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POV: You’re on a rockhounding trip with the Oregon Agate and Mineral Society in the summer of 1942.

Justin K Prim

Shared 56 years ago

1.1K views

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Don’t forget to clean your gems!

Justin K Prim

Shared 56 years ago

1.5K views

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Exploring Potter USA in Tucson, Arizona. An amazing workshop and historical archive of Jewelry dies.

Justin K Prim

Shared 56 years ago

1.7K views

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Resurfacing a Dominatrix gemstone polishing lap in Bangkok.

Justin K Prim

Shared 56 years ago

2K views

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Victoria cuts a Tanzanite while I’m traveling

Justin K Prim

Shared 56 years ago

3.3K views

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A quiet winter day cutting a peridot

Justin K Prim

Shared 56 years ago

2K views

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New Year. New School. Painting.

Justin K Prim

Shared 56 years ago

1.3K views

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Have you ever wondered how people cut stones 135 years ago? (origins of American-style faceting)

Justin K Prim

Shared 56 years ago

28K views

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Have you ever wondered how people cut gemstones 500 years ago?

Justin K Prim

Shared 56 years ago

8.2K views

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Have you ever wondered how they cut gemstones 300 years ago?

Justin K Prim

Shared 56 years ago

38K views

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Would you like to see how an emerald gets recut to improve color and shape?

Justin K Prim

Shared 56 years ago

22K views

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We just got keys to our new faceting school and museum! Fundraiser !

Justin K Prim

Shared 56 years ago

2.7K views

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How did they cut gemstones 200 years ago?

Justin K Prim

Shared 56 years ago

587K views

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How did they cut gemstones 100 years ago?

Justin K Prim

Shared 56 years ago

20K views

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A New Edition of my favorite book: Diamond Cuts in Historic Jewellery

Justin K Prim

Shared 56 years ago

2.9K views

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A peek at my new talk about EMERALDS

Justin K Prim

Shared 56 years ago

2.1K views

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We cut a monster sized stone this week! #aquamarine

Justin K Prim

Shared 56 years ago

5.3K views

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The American Pioneer gemstone cut of the early 20th century

Justin K Prim

Shared 56 years ago

4.2K views

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Meetpoint Meetup 2025

Justin K Prim

Shared 56 years ago

5.4K views

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Antique Jambpeg update: project complete!

Justin K Prim

Shared 56 years ago

2.5K views

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Recreating a stone from Napoleon‘s coronation

Justin K Prim

Shared 56 years ago

2.6K views

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Cutting test for the modded Sterling Handpiece

Justin K Prim

Shared 56 years ago

4.2K views

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An Upgraded and Modded Sterling Faceting Handpiece

Justin K Prim

Shared 56 years ago

5.9K views

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Faceting Museum Moving Day

Justin K Prim

Shared 56 years ago

1.7K views

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The journey of a Faceting Apprentice gemstone in the hands of one of our students

Justin K Prim

Shared 56 years ago

9.2K views

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Today is the last day of Faceting Bootcamp. New content next week when I have more free time😵‍💫

Justin K Prim

Shared 56 years ago

7.7K views

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Repairing emeralds the old fashioned way

Justin K Prim

Shared 56 years ago

4.4K views

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Faceting a 500 year old design #gemstone #art #history #jewelry #jewelrydesigner #vintage #crystals

Justin K Prim

Shared 56 years ago

4.7K views

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That time when Charlie Bexfield came over and cut a beautiful stone for Somewhere in the Rainbow

Justin K Prim

Shared 56 years ago

2.8K views

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A very, very, very fast run through of the London Gem and Mineral show. Full version on my profile.

Justin K Prim

Shared 56 years ago

1.9K views

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Mystery Setting jewel from 1961 by Van Cleef & Arpels

Justin K Prim

Shared 56 years ago

2.7K views

1:00

Arthur Dent cosplay #hitchhikersguidetothegalaxy

Justin K Prim

Shared 56 years ago

1.4K views

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Here’s a fun story about an incredible prop that my friend made me from The Hitchhiker’s Guide

Justin K Prim

Shared 56 years ago

1.3K views

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This was fun: a design from the 17th century from The Historic Teachings of Gemcutting, coming soon!

Justin K Prim

Shared 56 years ago

8.1K views

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Garnet transformation.

Justin K Prim

Shared 56 years ago

3.5K views

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A render of a 16th century gem pattern that will be included in my upcoming historical design book

Justin K Prim

Shared 56 years ago

1.8K views

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CAN A GEMSTONE BE A MAGIC SPELL?

Justin K Prim

Shared 56 years ago

4K views

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A great second day at the Sainte Marie Aux Mines Gem show

Justin K Prim

Shared 56 years ago

1.4K views

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Sainte Marie Gem Show 2024 - Day 1

Justin K Prim

Shared 56 years ago

1.3K views

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What treasure is inside the box???

Justin K Prim

Shared 56 years ago

4.4K views

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What will happen when I apply heat to this gemstone?!

Justin K Prim

Shared 56 years ago

2.6K views

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We had an amazing time learning the hand cranked French Jambpeg

Justin K Prim

Shared 56 years ago

3.3K views

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Have you ever seen a 100+ year old jewelers loupe? It’s a beautiful work of art.

Justin K Prim

Shared 56 years ago

14K views

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An early mechanical stick for the French jambpeg circa 1890. No teeth, no adjustments, just 8 sides.

Justin K Prim

Shared 56 years ago

1.4K views