About Skydiamond

Diamonds Made by Man and Powered by Nature

Engineered by nature, our category defining man-made diamonds are created at our Sky Lab in Gloucestershire, using only four ingredients; sun wind rain and atmospheric carbon. The only carbon capture diamond in the world made in Britain and certified negative-emission by design, not offsetting.

We are driven by the pursuit of
sustainability, using technology and innovation to discover creative solutions
to inspire ‘another way’, enabling us to continue enjoying the things we love, without compromise.

It has taken five years of research and development, a band of pioneering engineers and relentless efforts, culminating in ground-breaking, scientifically proven carbon-negative diamonds.

Our Skydiamonds are certified, chemically identical to the timeless diamonds we all know and love; plus, more traceable and eco-friendlier than standard lab-grown diamonds.

All you have to do, is set your imaginations free.

Diamonds made from the sky

Nature is our ally

We work in harmony with nature's own processes to create something beautiful and give people a choice; a creative solution to our environmental crisis rather than ceasing what you love we offer a brilliant alternative.

unrelenting effort and innovation

Our Patented Technology

We fuse carbon captured from the atmosphere with harvested rainwater, which is then heated and pressurised in a process powered by solar and wind power provided by our sister company, Ecotricity – fully measurable negative emissions achieved by design, instead of unreliable offsetting.

Working with Icons

Our Collaborative Endeavours

Skydiamond has already collaborated with iconic names such as Steven Webster and Gucci Vault, and adorned the neck of brand ambassador, green queen and supermodel, Lily Cole. This blue-sky thinking was the ingenuity of eco-entrepreneur and environmentalist Dale Vince OBE and sits within his growing portfolio of green innovations centred in the Cotswolds, Great Britain.

This is a brilliant future we can all aspire to. We just need to set our imaginations free.

Our impact report conducted by Imperial College London

Impact Report Findings

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

We Invited an independent analysis by experts at The Imperial College London on our process.

Learn More

The Real Thing
The manufacturing of Skydiamond replicates the earth’s process for mined diamonds, making them structurally and chemically identical.
99.79% Reduced Emissions
For every carat of Skydiamond produced, greenhouse gas emissions reduce by 99.79% compared to mined diamonds.
Negative Emissions
Compared to both mined and lab-grown diamonds, the Skydiamond process is the only one with negative emissions. This is due to the use of 100% renewable electricity, direct air capture for CO2, and hydrogen production from the electrolysis of rainwater.
Less Waste
Compared to growing diamonds in a laboratory, mined diamonds produce 4,383 times more waste, use 2.14 times the energy and 6.8 times as much water.
Significantly Reduced Emissions
Lab-grown diamonds also avoid all the sulphur oxide, and more than half the nitrous oxide emissions associated with mined diamonds.
Decarbonised at Every Stage
Skydiamond has a considerably larger avoided carbon footprint, in addition to avoiding pollution of the land and water too.

All without Offsetting

We're proud to achieve this through design, without offsetting, creating exceptional products for People and Planet.

Our Creation Process

Our British man-made diamonds are like no other. Everything we need to create our Skydiamonds comes from the sky, including something the world has too much of - CO₂.

Learn More

Step 1.
We extract CO₂ from the atmosphere, which we liquify and purify – an important step in ensuring the quality of our diamonds. With the CO₂ removed, the air released back into the atmosphere is cleaner than we found it.
Step 2.
We take rainwater collected from our factory roof and split it into oxygen and hydrogen using electrolysis.
Step 3.
CO₂ from the air and hydrogen from the rain are combined with biological single-cell life forms (the equivalent of a diamond sourdough starter) in a completely patented and bespoke process to create methane, which we feed into our diamond mills - the name for our CVD capsules - with a dash of nitrogen.
Step 4.
Inside our mills we grow our Skydiamonds on tiny diamond seeds (which we also make) in a ball of plasma running at about 1,000 degrees Celsius – roughly the temperature of the outer layer of the sun – using the renewable energy provided by the solar and wind power of our sister company, Ecotricity.
Step 5.
Several weeks later, our Skydiamonds have emerged. They are sent in batches to world class cutters and polishers in India; a woman's collective who train and pay female artisans at the same level as their male counterparts, and give them flexible working hours to accommodate family commitments.
Step 6.
Official Diamond Certification using the expected 4C's is conducted at Anchorcert, UK - we don't accept any stones under H VVS2. These hand selected stones are then set made into our fine jewellery pieces in recycled precious metals. All that remains is to brighten up the lives of our customers, who know they are wearing something beautiful from both inside and out.