PRECISION GEMSTONES FOR WATCHMAKERS AND FINE JEWELLERS WORLDWIDE
We've been calibrating stones for Swiss watchmakers and luxury jewellers for three generations.
From Geneva, Paris and London, we deliver the precision and provenance your projects require.
How We Work
WATCH STONE CALIBRATION
Watch dials demand absolute precision. We calibrate stones to ±0.02mm tolerance, from prototypes through to production runs of thousands of stones. Three generations of experience solving the same fundamental challenge: certainty.
HIGH JEWELLERY SETS
Matched sets for luxury collections. We source and calibrate 50-500+ stones with complete colour uniformity. Full traceability documentation included, meeting ESG requirements while enabling your brand storytelling.
CURATED SINGLE STONES
Browse 800+ gemstones. Each professionally photographed with 360° video and certificates. Register for trade pricing.
PROVENANCE DOCUMENTED
FULLY TRACEABLE SUPPLY
Traceability is about following the stone's journey from the point it was unearthed. Our Five-Level Traceability Standard documents provenance from mine to manufacture, meeting ESG requirements and enabling your brand storytelling.
We've been doing this for three generations. We just finally wrote it down.
Stay Updated
Quarterly updates on new arrivals and insights.
Everything Starts with a Stone
Explore a kaleidoscope of natural gemstones and diamonds in a gorgeous array of colours, cuts and sizes.
If you can't find what you're looking for, Contact Us and our team will be happy to help you find the perfect stone.
Everything Starts with a Stone
The Jewellery Maker’s Choice
A small sample of the wide range of natural gemstones sourced and held in our London headquarters, ready to be shipped quickly and securely, where and when you need them.
The Jewellery Maker’s Choice
Journal
Gem Reports and Certificates: Ensuring Trust and Quality in Your Precious Gems
In the realm of coloured gemstones and diamonds, it is crucial, now more than ever, to have an independent evaluation of the stones. This assessment serves a principal purpose: to determine if any ...
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Understanding Ruby Sizes and Weights: An In-Depth Exploration with a Visual Chart
Embracing Variety: Rubies come in a range of sizes, allowing you to find the perfect gem for your desired jewellery piece. From delicate accent stones to statement centrepieces, there's a ruby size...
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The Timeless Beauty of Natural Emeralds: A Jewel of Nature
Natural Emeralds Natural emeralds have captivated jewellery lovers for centuries with their vibrant green hue and rich history. But what is it that gives emeralds their iconic colour? Unlike other...
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