A Certified Diamond

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. 

 

About our Certification

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. 

Learn More from The Birmingham Assay Office

Skydiamond sets a new standard in diamond creation

We create negative emission diamonds, enabled by nature, and harness our expert jewellers to create pieces that span a lifetime.

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  • Grown from the sky

  • Made at the Sky Lab, Gloucestershire UK

  • World's only carbon negative diamond

The Role of AnchorCert in Ethical Sourcing

AnchorCert is the official seal from the Birmingham Assay Office, one of the world's leading authorities in the testing and certification of precious metals and gemstones. Established in 1773, the Birmingham Assay Office has a rich heritage and an unwavering commitment to maintaining the highest standards in the jewellery industry. AnchorCert is the guarantee that a diamond has been thoroughly tested and meets stringent quality and ethical sourcing criteria.

  • Why AnchorCert matters

    At Skydiamond, our lab-grown diamonds are created with nature and people in mind. Unlike land-mined diamonds, our man-made gems do not involve harmful mining practices or exploitative labour conditions. However, creating diamonds from the sky is just the beginning. AnchorCert gives our customers something just as rare: clarity, certainty and trust. 

    Discover how a Skydiamond is created

  • Traceability

    AnchorCert provides a clear and traceable journey for each diamond, from its creation in our labs to your hands. AnchorCert maps that journey, verifying ethical origin at every step and ensuring every gem meets rigorous ethical standards. 

    Read more about our diamonds’ traceability

  • Environmental Responsibility

    The certification process evaluates how we work, from energy use to carbon footprint and waste management. It’s independent validation that our process doesn’t cost the earth. 

    Read more about our environmental responsibility

  • Social Responsibility 

    AnchorCert ensures fairness beyond the factory floor. This includes ensuring that all workers involved in the creation of our diamonds are treated fairly, with safe working conditions and fair wages. It guarantees that our diamonds are free from any association with human rights abuses, child labour or conflict funding. 

     

    Read more about our social responsibility

  • Quality Assurance

    In addition to ethical considerations, AnchorCert provides comprehensive quality you can see and feel. Each diamond undergoes meticulous testing for cut, clarity, colour and carat weight – the famous 4Cs. The result? Exceptional stones with a story and a standard you can rely on. 

     

    Discover what lab-grown diamonds mean

  • What this means for you

    When you choose a Skydiamond, you choose a lab-grown gem created with transparency, ethics and a future-forward approach to luxury. AnchorCert gives you the confidence that your diamond is as honest as it is beautiful.

Our Impact matters

Diamonds Created in Harmony with Nature

Skydiamond was born to contribute to a planet positive future, creating ‘another way’ without compromise on quality or beauty.

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Our Creation Process

We create diamonds from only four ingredients from nature, including atmospheric carbon to help restore the Earth.

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