Why are diamonds so hard

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=voi5aD8Sl6s

Imagine a diamond. What do you see? Many people will think of a glittering gemstone on jewellery. But the amazing properties of diamond make it ideal for a h...

Royal Society, science, scientists, national academy, UK, diamond, properties, gemstone, summer science, electronics
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