Magus Gems

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Crafted by Gemcutters, for Gem Lovers

We are Victoria Raynaud and Justin K Prim, professional gemcutters, gemologists, authors, and educators based in Lyon, France.

Every gemstone you find here has been individually selected and cut with the care and precision that only experienced lapidaries can bring. Alongside our collection of one-of-a-kind gemstones, you’ll also find books, tools, and educational resources created from years of professional experience.

Our workshop is proud to have been awarded the Fabriqué à Lyon label, recognizing our commitment to local craftsmanship and exceptional quality.

Whether you’re a collector, jeweler, gem enthusiast, or aspiring cutter, we hope you’ll find something here to inspire you

Certificate of Authenticity

Every gemstone from Magus Gems comes with its own Certificate of Authenticity.

Each certificate records the gemstone’s key characteristics, including its variety, weight, dimensions, cutting style, any known treatments, and, whenever known, its provenance. It also names the professional gemcutter who cut the stone, so you’ll always know who crafted your gemstone.

Our Certificate of Authenticity reflects our commitment to quality, transparency, and the craftsmanship behind every gemstone we cut. It is not a substitute for a gemological laboratory report. If you require a laboratory report, we are happy to arrange one through a gemological laboratory upon request.