Onda Pear & Emerald Cut 2.16ct Toi & Moi Ring in 18ct Yellow Gold

Skydiamond is the world's first carbon-negative certified diamond. We have created the ultimate alternative, by alchemising the air we breathe into light-splintering British-made diamonds.

The first measure of a diamond’s quality is its size, measured in carats. A carat weighs one fifth of a gram or 0.2g.

It’s all about the sparkle. That’s why a diamond’s cut is so important. People often think this has to do with its shape – round, radiant, pear and so on – but cut is actually determined by how a diamond’s facets have been fashioned to interact with light. Every Skydiamond is crafted to deliver maximum brilliance.

Less is more when it comes to a diamond’s colour. A chemically pure and structurally perfect diamond has no colour at all. Skydiamonds are graded using AnchorCert’s scale going from D (colourless) to Z (light). Diamond colour is nearly impossible to discern with the naked eye and near colourless stones (G-J) offer superb value.

The purer the diamond, the higher its clarity rating. Clarity is determined by the nature, number, size and position of inclusions within a stone as well as any blemishes on its surface. Skydiamonds come in a wide selection of clarity ratings, which is reflected in the price.

This Skydiamond comes with its own birth certificate from the AnchorCert Gemology lab telling you its carat, cut, colour and clarity.

Size M