Klatten additionally controls chemical manufacturer Altana and holds stakes in wind power outfits and carbon and graphite producers.

FORBES: The Richest Car Guy In The World Is Not Elon Musk - It's Not Even A Guy

She also controls chemical manufacturer Altana and holds stakes in wind power outfit Nordex AG and carbon and graphite producer SGL and Geohumus, which focuses on developing a water storing granulate to be used in agriculture.

FORBES: The Richest Car Guy On The Planet Is A Woman

Germany's SGL Carbon (6, SGG) has fallen 33% since May and has yet to recover as it supplies primarily the hard-hit steel and semiconductor industries with carbon and graphite products, which include electrodes, laboratory components and furnace linings.

FORBES: Magazine Article

For instance, graphite and diamond are both made of carbon, but the difference in the crystalline arrangements of their carbon atoms means that graphite conducts electricity while diamond is a good insulator.

ECONOMIST: A new approach to making optical fibres

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

For instance, the ultra-thin layers of graphene (a two-dimensional form of graphite) are formed by injecting liquid solutions containing carbon and silicon into an extremely hot, ionised gas (plasma) of argon.

ECONOMIST: MONITOR

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

Belonging to a class of worlds known as diamond planets, 55 Cancri e is thought to be rich in the element carbon, which can exist in a variety of structural forms such as graphite (the material used as pencil lead), graphene, or diamond.

BBC: Oddballs: The strange worlds beyond our Solar System

Think of it this way: The graphite in a pencil and a diamond differ only in how their carbon atoms are arranged.

FORBES: Tiny Miracles