Natural pink to red diamonds are among the rarest and most desired fancy colored diamonds. They range from pink to reddish purple, and include pink- purple, orangy red, purplish red and more.
550 nm absorption band is the cause of color in 99,5% of natural pink diamonds.
Distortion of the of the crystal lattice might also produce red diamond color. Pure orange, with no hint of brown, is probably the rarest diamond’s color. Orange diamonds are so rare that scientists aren’t exactly sure what causes their extraordinary color. But it is most likely the result of a combination of chemical impurities and structural distortion.
Here is the example of color distribution that can be seen within pink diamonds. The more saturated the color, the more valuable the diamond.
The vast majority of natural pink diamonds are less then a carat. Below are some examples of the most remarkable and famous pink diamonds that have been created through a collaboration of nature and very skilled polishers.
The Pink Star diamond is one of the most expensive gems to be sold to date. This rare diamond that weights 59.60 ct was sold at a price of $ 71,2 million as announced by GIA. It cost around USD 1,208,053.69 per carat.