Upside: He took two dozen employees with him to form Diamond (crossfire lawsuits between Bergstein and Technology Solutions were later settled).

FORBES: Silicon in the Snowbelt

Elemental carbon had long been thought to exist in only three physical forms: graphite, diamond and an amorphous form, of which charcoal is an example.

ECONOMIST: Space-age soot

Adding to their allure is that they have also been determined to be Type IIa, the most chemically pure form of diamond showing exceptional appeal transparency.

FORBES: Connect

With light rain as my only company, I walked through Paris until I reached the famous pyramid, splashed with water nymphs in the form of diamond-coloured drops, surrounded by Japanese tourists holding candy-coloured umbrellas.

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Their results suggest 55 Cancri e is largely composed of carbon (in the form of graphite and diamond), iron, silicon carbide, and, potentially, silicates.

BBC: Oddballs: The strange worlds beyond our Solar System

Lazare Kaplan, a US based diamond manufacturing and distribution company, developed this form of inscription.

BBC: Who, What, Why: How do you spot a stolen diamond?

They took the view that Mr Diamond, who was credited with creating the sprawling modern form of Barclays - global, huge on Wall Street - was probably the safest pair of hands to steer it away from accidents, in the absence of an obvious successor.

BBC: Diamond ��hounded out by MPs��

Built by connecting a number of standard modules each measuring 384mm both in height and width and weighing eight kilograms, the Diamond Vision OLED is scalable and can be designed to flexibly form a certain size or shape, even against rounded surfaces.

ENGADGET: Mitsubishi's huge, modular OLED display set to go on sale worldwide on September 21