DIAMOND
The diamond has been a symbol for wealth for thousands of years. Colours can be clear, white, yellow, blue, brown and pink. Diamond has high refraction, high dispersion or fire, very low reactivity to chemicals and rarity. Diamonds are found in Africa, Australia, Brazil, India, Russia and the United States. They are considered to be the ultimate gemstone, having few weaknesses and much strength. It is well known that Diamond is the hardest substance found in nature. It has four directions of cleavage, meaning that if it receives a sharp blow in one of these directions it will cleave, or split. A skilled diamond setter will prevent any of these directions from being in a position to be struck while mounted in a piece of jewellery.
Hardness 10