Paragraph 1
Movie star Marilyn Monroe
famously sang, "Diamonds are a girl's best
". Scientists in Belgium believe they have unearthed an 18-km wide layer of these
stones, on Mercury. Our nearest planetary
could be a celestial
. Researchers tested how Mercury formed, 4.5 billion years ago. Mercury evolved from a
cloud of dust and gas. Over
of years, the
was compressed into graphite. It is
that Mercury's diamonds could ever be mined. This is because they are 500 km below the planet's
.
