All Things Stone Sourcing
At E.C.One, every gemstone has a story. And this year, we went to find it.
Members of our team travelled to Copenhagen and Sri Lanka to trace the journey of our sapphires from mine to workshop - witnessing first-hand how stones move through the supply chain, who handles them, and what responsible sourcing actually looks like in practice. Not in a brochure. In a cutting room. Beside a mine.
This is what we found, what it changed, and what we're making because of it.
Why We Made the Trip
One of the most honest things we can tell you about ethical jewellery is that proximity matters. The further a jeweller is from their supply chain, the easier it becomes to accept vague assurances in place of real knowledge.
The jewellery industry has a long history of operating in separate layers - miners, dealers, and jewellers rarely meeting, rarely accountable to one another. At E.C.One, we've always believed there's a better way. But believing it and seeing it are different things.
So we went to see it.
Brogan and Elise visited Wennick Lefèvre in Copenhagen - one of our most trusted stone dealers, whose entire business is built around natural, untreated gemstones with traceable origins. At the same time, our director Jos travelled to Sri Lanka, home to some of the world's finest sapphires, to see the sourcing process closer to the mines themselves.
What Makes Sri Lankan Sapphires Special
Sri Lanka - historically known as Ceylon - has been a source of exceptional sapphires for centuries. Ceylon sapphires are prized for their clarity, their silky colour, and the extraordinary range of hues the island produces: from the cornflower blues most people picture, to soft padparadscha pinks, golden yellows, and teal greens that look like the sea off the southern coast.
What makes them particularly suited to E.C.One's approach is that Sri Lankan mining is predominantly artisanal and small-scale - community-based operations that, when sourced responsibly, support local livelihoods rather than displacing them.
This is why provenance matters. A sapphire described only as "natural" tells you almost nothing. A sapphire you can trace to a specific region, dealer, and set of relationships tells you something real.
Working With Wennick Lefèvre
Our relationship with Wennick Lefèvre is built on exactly the kind of transparency that's rare in the gemstone trade.
Every stone they supply is natural and untreated - meaning no heat treatment, no fillers, no enhancements designed to mask a stone's natural character. They maintain long-standing relationships with miners and cutters, and crucially, they know the story behind each individual stone.
What struck our team in Copenhagen was how different this felt to conventional stone buying - which often involves purchasing from catalogues with little information about origin. Here, the conversation begins with: where did this come from, who found it, and who cut it?
That's the conversation we want to have before we put anything in one of our pieces.
What We Selected - and Why
During both visits, our team selected a collection of exceptional natural sapphires. Each one is formed entirely by the earth over millions of years, which means each one is genuinely unique - in colour, in clarity, in the way it holds light.
We chose deliberately and slowly. Not every stone makes the cut. We're looking for pieces that feel worth designing around - stones with enough character that the jewellery should respond to them, rather than the other way around.
Our design team has already begun working on pieces that celebrate each stone's individual beauty.
What B Corp Certification Actually Demands of Us
Many of you know that E.C.One is a certified B Corp - and specifically, the first British jewellery workshop to achieve certification. But it's worth being direct about what that means in practice.
B Corp certification isn't a fixed standard you meet once and display permanently. It demands ongoing accountability across social and environmental performance, verified by independent assessment. That means we are regularly reviewed, and we have to demonstrate real progress - not just good intentions.
One of the things certification has taught us is to be comfortable with not always having the perfect answer. Ethical sourcing is genuinely complex. The supply chains involved in fine jewellery stretch across continents, through many hands, across languages and currencies and regulatory systems.
What we can promise is that we keep moving toward closer relationships, more direct knowledge, and greater transparency - and that when we learn something that changes how we work, we share it.
This trip is part of that commitment.
Frequently Asked Questions About Ethical Sapphire Sourcing
What does "natural and untreated" mean for a sapphire? A natural sapphire is one formed by geological processes, not created in a laboratory. "Untreated" means it hasn't been heat-treated, fracture-filled, or otherwise enhanced after mining - processes commonly used to improve the appearance of lower-quality stones. Natural untreated sapphires are rarer and considered more valuable by gemologists.
What is a Ceylon sapphire? Ceylon is the historical name for Sri Lanka, and Ceylon sapphires refer to sapphires mined there. The island has produced world-class sapphires for centuries and is particularly known for a distinctive cornflower blue, as well as the rare padparadscha - a soft pink-orange colour found almost nowhere else on earth.
How does E.C.One verify where its stones come from? We work with dealers like Wennick Lefèvre who maintain direct relationships with miners and cutters and can provide origin information for individual stones. This level of traceability is still uncommon in the jewellery trade - most stones pass through multiple intermediaries with little documentation. Our B Corp certification requires us to maintain and improve our sourcing standards over time.
Can I request a specific sapphire for a bespoke piece? Yes. We'd love to walk you through the stones we've selected and talk about what might work for your design. Book an appointment at our Clerkenwell workshop and we can show you the collection in person.
Are your sapphires used in engagement rings? Absolutely - sapphires have been used in engagement rings for centuries and are an increasingly popular alternative to diamonds. They're exceptionally hard (9 on the Mohs scale, second only to diamond), available in a wide range of colours, and carry a depth of meaning that many couples find more personal than a traditional white diamond.
Come and See the Stones
If you'd like to view our newly sourced sapphires in person, talk about what responsible sourcing means in practice, or start designing a bespoke piece around one of these stones - we'd love to meet you.
Book a complimentary appointment at our Clerkenwell workshop. You'll meet one of our jewellers, explore the collection, and we can begin creating something that starts with a real story.
