Diamant No. 11
by 101 Productions Ltd - © Corbis. All Rights Reserved. - © 101 Productions Ltd/Science Photo Library/Corbis
Cut and polished diamond
16 Jun 2003 --- Cut and polished diamond. Diamond is a naturally occurring form of carbon that has crystallised under great pressure. Pure crystals are colourless and transparent, and can be polished to sparkle in the light. Diamond is the hardest known mineral. Poorer quality specimens are used in industry, mainly as cutting and grinding tools. --- Image by © 101 Productions Ltd/Science Photo Library/Corbis



