Diamonds

Diamond is one of the most fascinating substances in existence. Its chemical composition — pure carbon in a crystalline lattice — has been known since the 18th century. Yet it...

The carat is the international unit used to measure the weight of a diamond. One carat equals exactly 0.2 grams, or 200 milligrams. But where does this unusual unit come...

When speaking of a white diamond, colour actually refers to the absence of colour. A perfectly colourless diamond allows light to pass through without interference, revealing its full brilliance. It...

Every diamond is unique. During its crystallisation — whether unfolding deep underground over millions of years or in a laboratory over several weeks — the stone acquires internal characteristics of...

Among the four criteria that define a diamond's quality — Colour, Clarity, Cut and Carat — Cut is the only one that results entirely from human craftsmanship. It is also,...

Among fancy colour diamonds, yellow is one of the most appreciated and accessible. Its colour, ranging from delicate pale yellow to deep intense golden, comes from a well-understood cause: the...

The blue diamond is, alongside the red, one of the rarest stones in existence — both in nature and in the laboratory. Its mysterious beauty has transcended centuries and legends,...

The pink diamond is, without question, the most mysterious and coveted stone in the world of fine jewellery. Its formation combines extreme conditions of pressure and temperature with the exposure...

The green diamond holds a singular place in the world of gemmology. In many cultures, green evokes prosperity, harmony and nature. In fine jewellery, it is synonymous with exception. A...

The orange diamond is often overlooked by the general public, overshadowed by the celebrity of yellow and the rarity of pink. Yet it is one of the most fascinating stones...

The black diamond occupies a singular place in fine jewellery. Mysterious, contemporary, resolutely avant-garde, it attracts a clientele seeking to transcend traditional codes. Two Very Different Types of Black Diamond...

The shape of a diamond and its cut are two distinct concepts that are often confused. The cut refers to how the facets reflect light — it is a quality...

Diamond is far more than a precious stone. It is one of the most extraordinary materials nature has produced — and that science has managed to reproduce. Its physical and...

Created in 1812 by Austrian mineralogist Friedrich Mohs, the Mohs scale remains the reference tool for assessing mineral hardness. Its principle is one of elegant simplicity: a harder mineral will...

The beauty of a diamond extracted from the ground carries a cost that consumers rarely consider. Before arriving in a piece of jewellery, a mined diamond has left behind considerable...