
Gemstones
We offer a vast selection of calibrated and custom gemstones, allowing you to streamline your supply chain with confidence in our consistent quality.

Bespoke Cutting
Our mastery in cutting ensures that each stone meets the exacting demands of your designs. We are experts in working with various stones, from rubies and sapphires to custom materials.

ABOUT US
These words have guided Major Trading from its humble beginnings in 1987 to becoming a leading name in precision-cut gemstones. Since our founding by Mat Haruni, we have dedicated ourselves to servicing the intricate needs of Swiss watchmakers, where precision is not just expected—it’s demanded.
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
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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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