Listen, we wanted to tell you, we really did. But then we saw the look on your face, and how happy you were, so we thought we'd play along. Then you had to go show off, and brag to all your friends, and there was no turning back. Besides they look just like real diamonds, I mean, they fooled you didn't they?
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´t cratch them with anything but a diamond because it is the hardest mineral on earth (actually the value 10 in the moh´s scale is derived from diamond). But the hardness of a mineral has absolutely nothing to do with its ability to break if you hit it for example with a hammer or put it in this h
ell of a machine. So don´t mix these two physical properties up, hardness and cleavage.