Diamonds were first discovered in the valleys of India, and later it was extensively found in both Brazil and South Africa. Today, there are different varieties of diamonds available in the global market. The rarest type of them all is the Red Diamond.
Due to its rarity, Red diamonds are the most expensive diamonds in the world. Unlike other fancy coloured diamonds that derive their colour from impurities such as Nitrogen and Boron, Red Diamond are made purely of Carbon, just like colourless diamonds. The red colour of the diamond is caused by deformation in its crystal lattice structure. It is mostly found in Australia, Russia, Africa and Brazil. Because of their singular, unique anomaly, Red diamonds occur in small sizes.
The majority of Red diamonds found are less than 1 carat in weight. Only 5 red diamonds are known to exceed 5 carats in weight, the largest being 5.11 carats. A Red diamond is priced according to the strength of its colour. The stronger the reddish hue, higher the value. The ones with pure red or purple-red colour are scarce and hence most expensive.