In the hills of the Cotswolds, we’re redefining what is means to wear a diamond. At Skydiamond, every gem we make is a promise: lab-grown, carbon-negative and created without compromise on beauty or integrity.  

But sustainability isn’t just about how a diamond is made but also how it’s proven.  

That’s where AnchorCert comes in; a certification that guarantees the authenticity and ethical origins of our diamonds – a crucial step in the journey towards sustainable and ethical diamond sourcing. 

We live in an age where transparency matters. Every purchase is a choice, and every pound spent is a vote for the future. 

That’s why we are proud to partner with the Birmingham Assay Office Gemmology Lab, a leading UK authority in independent diamond certification. With over two decades of expertise and access to cutting-edge technology, its team examines every loose Skydiamond before it’s ever set, assigning each one a unique code and a full laboratory report. 

The Birmingham Assay Office Gemmology Lab is a guardian of truth in an industry based on trust. As part of the Birmingham Assay Office – established 250 years ago by Act of Parliament – its mission is to protect the integrity of precious jewellery. Historically known for hallmarking gold, silver, platinum and palladium, the Assay Office now extends its legacy to include lab-grown diamonds, setting a new benchmark for the future.  At Skydiamond, we help shape standards as much as we work towards meeting them. And so do our certification partners. The Birmingham Assay Office doesn’t operate in isolation. Its gemmologists sit on industry advisory panels, helping evolve global standards and ensure they reflect the values today’s customers care about: transparency, ethics and responsibility.  Together we offer confidence, proof and a promise that every Skydiamond is traceable, tested and held to the highest standards, by people as committed as we are to doing things the right way. 

Because when it comes to beauty, integrity should never be optional.