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
It’s been over a year since I restored and modified this 100 year old faceting bench and I’m still completely in love with it. Every time I see it, it makes me want to sit down and cut a stone. I’ve just added a few upgrades: a magnetic phone holder on the right leg and two extra vintage drawers to holds extra tools and stones. I’ve got a big upgrade to my Jambpeg coming in a few weeks, but more on that later…
1 week ago | [YT] | 91
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Justin K Prim
Thank you to the US Faceters Guild for sponsoring the Museum of Faceting Technology. They came in at the 11th hour, when we were discovering that we needed to invest a lot more money on the shelf lighting, and we’re so thankful.
If you’re a gemcutter and you don’t know the USFG, you should! Their organization does so much to promote the art and hobby of faceting, from throwing multi-day symposiums in Tucson and Franklin, to hosting faceting competitions, to publishing a newsletter, and much more. Check them out at www.usfacetersguild.org/ and become a member. Also, check out the USFG Facebook forum, which is one of the best.
1 week ago | [YT] | 37
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Justin K Prim
National Jeweler just published a great article about the state of American gemcutting that features Jenna Sloane, Nadine Marshall, and I talking about cutting. Thanks so much to Lauren Mclemore for writing it.
nationaljeweler.com/articles/14968-state-of-colore…
2 weeks ago | [YT] | 45
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Justin K Prim
Tomorrow, I’m filming my first video in the new faceting museum environment. I’ll be unboxing a brand new faceting machine, but which one will it be ????
1 month ago (edited) | [YT] | 45
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Justin K Prim
It’s starting to look like a museum in here!
1 month ago | [YT] | 86
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Justin K Prim
This is fun! Can’t wait for the next one
2 months ago | [YT] | 2
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Justin K Prim
As we continue the renovation of our new faceting machine museum, we want to thank our newest sponsor, Oak and Stone School for helping financially support our project. The Oak & Stone School of American Gemcutting teaches American-style faceting in an artist’s retreat in Pennsylvania. Whether you explore faceting as a new hobby or master advanced techniques or new equipment as a seasoned gemcutter, Oak & Stone guides your journey.
2 months ago | [YT] | 22
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Justin K Prim
Next week I start the last wave of renovations and installations for our new faceting school and museum. I want to say thank you to Gem Tours for a generous donation which allowed us to ship over 50 faceting machines plus hundreds of gem-related books from America to France.
If you’re ever in Sri Lanka, you can journey through the world of gems with Sandun from Gem Tours and explore the wonders of gem fashioning !! Contact Sandun Aponsu for details on Gem Tours in Sri Lanka.
3 months ago | [YT] | 36
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Justin K Prim
Hey New York Friends! We’re having a faceting open house this Thursday at Brooklyn Metal Works. It’s free. Come see demos and meet other cutters and/or cutting students. If you want to learn about cutting or are thinking about taking a class, this is your perfect opportunity to see it live.
3 months ago | [YT] | 59
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Justin K Prim
I was a guest on the FacetNation podcast this week! Check it out for some stories, some life advice, and some reveals for 2026.
3 months ago | [YT] | 2
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