And any gentleman who’s ever beenbackhanded by a lady with her diamond ring should know a styptic pencil willstop the bleeding.

那些被戴着钻戒的女士们反手扇过耳光的先生们应该知道止血笔是管用的。

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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

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