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.
Justin K Prim
In order to help raise funds for our renovation project, we’re having a holiday sale at www.facetingapprentice.com. All English and French One Day Workshops in Lyon are $100 off and all online courses are 20% off with the coupon code. Also if you want to donate to our renovation project, we can take funds via Wise (@magus5) or PayPal (www.paypal.com/ncp/payment/W9YUVU4GW2976). Buying books and gems from magusgems.com is also a big help. Renovation is expensive! Thanks everyone and happy holidays.
4 days ago | [YT] | 18
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Justin K Prim
Listen here: www.patreon.com/posts/ep-36-keith-past-145266511
2 weeks ago | [YT] | 8
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Justin K Prim
Hey facteters, I have great news. Our faceting toolkits are now back in stock. Includes everything you need except polishing laps and a faceting machine. We have 10 available on our site that will ship in the next two weeks and should arrive by xmas! A nice present for yourself or a loved one?!? These have been out of stock for a year and won't stay in stock long, so don't miss your chance.
www.magusgems.com/product-page/faceters-tool-kit?b…
2 weeks ago | [YT] | 11
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Justin K Prim
If you’re in the UK, come to the gem show this weekend and say hi
1 month ago | [YT] | 21
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Justin K Prim
Attention future students! Our 2026 course schedule is now posted… Faceting Bootcamps, One Day Experiences, Advanced Workshops, and our Mountain Retreat. All the dates are posted and are available for registration. Make 2026 the year you learn to facet gemstones! The full schedule is available at: www.facetingapprentice.com/pages/course-calendar
1 month ago | [YT] | 11
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Justin K Prim
Hey London! I’m coming to give talks, workshops, and gemcutting demos at the London Gem and Mineral show on Nov 22-23. Come say hi!
Details here: www.thegemandmineralshowuk.com/
1 month ago | [YT] | 30
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Justin K Prim
We just sent 350 cubic feet of faceting machines and books to France for our new school and museum (coming next year). Now we need to raise a bunch of money so we can pay the shipping bill. With that mind, we are announcing a 20% off sale on all of our online classes at www.facetingapprentice.com. The sale lasts until my birthday, November 8. So if you’ve been thinking about taking one of our video-based online classes, now is the time.
To get the discount, use the code: MuseumFundraiser at checkout
2 months ago | [YT] | 17
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Justin K Prim
Good news
3 months ago | [YT] | 38
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Justin K Prim
It’s been awhile since I’ve done an introduction and we’ve got a lot of new faces around here. Hi, I’m Justin. I’m a gemcutter who’s spent the last 11 years going from San Francisco to Bangkok to Lyon, developing my craft as a Lapidary. In that time, I’ve trained under countless teachers in more than a handful of countries, I’ve written two books, started two schools, and cut hundreds if not thousands of gemstones. It’s been an unbelievable journey so far, full of great friends, great adventures, and beautiful jewelry. Thanks for joining me here and on YouTube as my destiny continues to unfold and I continue on my journey towards fasting mastery, all the while, discovering and documenting the unwritten history of the gemcutting trade. ♥️♥️♥️
3 months ago | [YT] | 63
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Justin K Prim
Everyone is talking about Old Mine Cuts! We love Old Mine Cuts so much that we have two different designs in our brand new design book, The Historic Teachings of Gemcutting. These two are historically accurate designs based on 3D scans of antique diamonds. If you’d like to learn how to cut one yourself and make your own Old Mine Cut, order the book today and learn!
www.magusgems.com/product-page/the-historic-teachi…
3 months ago | [YT] | 47
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