Natural red diamonds are the rarest of all natural colored
stones. So much so that fewer than 10 such diamonds are
produced annually in the whole world. Moreover, only a
relatively small number of red diamonds have ever received the grade of fancy red - the purest form of red diamonds.
They frequently contain modifying colors, including pink,
purple and brown, thus providing a mixed effect.
However, in contrast to other colored diamonds where
traces of additional colors usually reduce the price, a
brownish or purplish-red can cost almost as much as a
fancy red, since the base color – red – in itself is so rare.