In addition to being one of the hardest (though technically not #1) substances, diamond is also a fantastic heat conductor and there have been some folks trying to build custom heat sinks out of the large artificial (very impure) diamonds.
There are many factors that make diamonds valuable. They are desirable as jewelry because of their ability to reflect light and give off that brilliance. for industrial reasons, diamonds are good because they are the hardest natural substance known to man and also conduct heat.
but above all else i think it is because they are rare that owning them is so important.
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It is rare, very beautiful, and hard to find.
=)
But stop asking other people to do your homework for you.
Valuable Natural Resources
In addition to being one of the hardest (though technically not #1) substances, diamond is also a fantastic heat conductor and there have been some folks trying to build custom heat sinks out of the large artificial (very impure) diamonds.
There are many factors that make diamonds valuable. They are desirable as jewelry because of their ability to reflect light and give off that brilliance. for industrial reasons, diamonds are good because they are the hardest natural substance known to man and also conduct heat.
but above all else i think it is because they are rare that owning them is so important.
there are more facts about diamonds on this website: http://www.diamond-empire.com/Diamond-facts.html
They have a hardness of 10 so they can be used to cut anything else.
My answer would be because they are soo hard to find because the y are in the depths of the Earth.
Scarcity and hardness.