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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Lawry, Lawrence |
Bildgröße: | 4636 px × 3813 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |