A diamond is a mineral composed of carbon crystallized at extremely high temperatures and pressures; in nature, diamonds form 150 to 200 kilometers (93 to 124 miles) or more below the earth's surface.
Source: GIA
Another Answer
Diamond mineral appears to be a rock until it is processed. Only 20% of all diamonds mined qualify as gem-quality; the remainder are easily mistaken for ordinary 'rocks'.
All diamonds can be called rocks; not all rocks are diamonds.
Diamond is not a rock, it's a mineral.
the softest rock is talc and the hardest is a diamond
a diamond that looks like a rock
No a diamond is a mineral. It is made out of one substance. Diamond :P
No. By definition, sedimentary rock is formed on the earth's surface and in bodies of water. Diamonds are formed far below the earth's surface and are erupted to the surface by way of volcanic pipes.
Diamond Rock happened in 1805.
The harder rock is diamond
A diamond
Diamond is not a rock, it's a mineral.
Your answer is a raw red diamond rock.
no a diamond is a gem.
the softest rock is talc and the hardest is a diamond
Of cource another diamond! A diamond is the toughtest rock.
Battle of Diamond Rock happened on 1805-06-02.
a diamond that looks like a rock
Yes, diamond is a rock.
No rock has ever been turned into a diamond. Synthetic diamond is made from graphite, a mineral and an allotrope of carbon.