Loose Diamonds

Loose Diamonds

No two diamonds are the same. Each one is as unique as the hand that wears it and we pride ourselves on selecting the finest stones, applying our own process to ensure unparalleled quality and ethical standards. 

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How is a diamond made?

Diamonds are formed as a result of carbon crystallising under intense heat and pressure, many miles underground. It’s not known exactly how long a diamond takes to form and diamonds themselves can’t be dated, as carbon dating only goes back 60,000 years.

However, the natural mineral inclusions within diamonds are effectively preserved and can be radioactively dated, which tells geologists that most deposits were formed over 3 billion years ago.

What are the 4 Cs?

Carat, Clarity, Colour and Cut are known as the 4 Cs. These are four characteristics by which diamonds are graded according to their beauty and structure. Knowing how these ratings work together means you can make smart choices in picking a diamond that works for your design and budget. Find out more in our introduction to the 4 Cs.

How are diamonds cut?

A rough mined stone is cut and polished into a gem using expert tools, equipment and know-how. The process is broken down into five steps:

Planning. When the cutter assesses the stone’s natural form and structure and decides which shape it is best suited to.
Cleaving. The process of halving or separating a rough diamond into smaller gems according to its natural grain formation.
Bruting or faceting. The precision-placing of each flat surface which creates the stone’s shape and ensures its angles generate the best sparkle.
Polishing. Once the facets have been cut the diamond is then smoothed by a spinning wheel to create a brilliant reflective finish.
Inspecting. The final stage of quality control when a diamond is inspected, and the cutting process is approved.

What shape is a diamond?

The techniques used to create diamond shapes are divided into two main types; the round brilliant cut and fancy cuts.

A brilliant round cut is the most popular choice for engagement ring stones. Fancy-cut diamonds (which is any another shape) are then classified into one of the following categories:

Modified brilliant cuts. These are oval, princess, pear, marquise, and heart. They’re defined by lots of facets which are placed at many angles to bounce light around to maximum effect.

Step cuts. These are emerald and Asscher shapes, defined by clean lines and long flat planes. As these use fewer facets than a brilliant or modified brilliant cut, it is easier to see the inside of the diamond and so a higher grade of clarity is required to get the best results.

A mixed cut technique combines both brilliant facets and step cuts to create intricate shapes like the cushion and radiant cut. This tends to preserve the original carat weight by using more of the rough diamond.