Bringing the finest treasures of Ceylon to the world.
UK Company Number: 16982945
Headquartered in the United Kingdom, we bridge the gap between discerning collectors and the legendary mines of Sri Lanka.
For centuries, the island of Sri Lanka (formerly Ceylon) has been known as the Island of Gems ("Ratna-Dweepa"). Its unique geological conditions have produced some of the world's most spectacular sapphires, including the ones adorning the British Crown Jewels.
One Gem Limited specializes in these authentic Sri Lankan origin stones. Our deep-rooted connections in the local gem markets of Ratnapura and Beruwala allow us to source stones directly from miners and cutters, bypassing intermediaries to ensure provenance and value.
We curate a diverse yet specific collection, with a focus on:
We believe that true luxury must be responsible. All our gemstones are ethically sourcing from mines in Sri Lanka that adhere to strict environmental and labor standards. We maintain full transparency in our supply chain.
Every gem we sell comes with proper certification (such as GRS, GIA, or EGC) and valid export licensing, ensuring that your purchase is not only beautiful but also legitimate and conflict-free.
Experience the authentic journey of our gemstones, straight from the traditional mines of Sri Lanka (Ratnapura and Beruwala). Our deep-rooted connections allow us to witness the intricate and labor-intensive process of gem mining, ensuring ethical sourcing and unparalleled quality from the very beginning.

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After being unearthed, our rough gems undergo a transformational process. Traditional Sri Lankan gem cutting, passed down through generations, combines age-old techniques with meticulous precision. Our expert artisans carefully study each rough gem to maximize its natural color, brilliance, and weight, unleashing the true beauty hidden within.








