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Diamond Education and Research

How to Buy a Quality Diamond
The Diamond 4Cs
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Coloured Diamonds (Red to Black)
Diamond Glossary
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The Truth About Diamonds
Diamonds: From Mine to Market
What are Conflict Diamonds

Coloured Gemstones & Metals
About Daniel Prince of London
Tax Free Shopping - London Jewellers UKDaniel Prince of London supports the Kimberley ProcessBritish Jewellers Association Member - London Jewellers UKGIA Diamond Education - How to Buy a Diamond
We guarantee that our diamonds are conflict-free by purchasing from legitimate sources not involved in funding conflict and in compliance with United Nations resolution, based on personal knowledge and/or written guarantees provided by our diamond suppliers.
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Daniel Prince Limited
3 Fullwoods Mews,London N1 6BF
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Diamond Education: Grey Diamonds

Diamonds with Gray as the primary dominant colour are unique. These diamonds are comparatively reasonably priced and have a perceived colour resembling the colour of the metal nickel, aluminum, or pewter.

Gray is a neutral colour containing little or no saturation. The addition of small quantities of blue or green will produce a cool gray colour, while the addition of brown or yellow will produce a warm gray colour.

Common names for gray colour diamonds include charcoal gray, steel, pigeon, slate, silver etc.

The gray diamond rough is mined in Australia, South Africa, India, Russia and Brazil.

Gray diamonds are coloured by hydrogen, and more rarely boron (unknown how, since boron nearly always forms blue). The defect causes the stone to absorb all wavelengths of light equally. Gray colour can tint nearly every other shade. Gray colours often appear very different when viewed under average natural daylight versus an artificial light source. Natural gray diamonds occur within a specific region of colour tone. Their lightness extends from very light (smoke) gray, through dark (graphite) gray colours.

The secondary hues and colour modifiers include black, green, blue, yellow, pink, purple, brown etc.

Enhanced gray colours are rarely made due to easy availability of natural gray diamond

Back to Coloured Diamonds
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