Color in Natural Colored Diamonds
Origin, Rarity and Formation
When we hear the word "diamond", the first thing that comes in our mind is a colorless sparkling stone with no hue. However some diamonds do can exhibit natural color. Yet very few people are aware about the existence of these colored diamonds.
A diamond is categorized as a Natural Color Diamond by a gemological lab if it has a noticeable body hue when viewed from both side and face up position.
Yellow brown and gray are more common while pink, blue, violet and red are considered as extremely rare.
As per geology.com out of 100,000 diamonds only a few will have these colors. The colors are classified to have intensities ranging from faint, very light, light, fancy light, fancy, fancy intense, fancy deep to fancy vivid. With intensity of color, the rarity of diamond also increases and hence its investment value.
The formation of color diamond is an natural chemical and atomic structural process. For example, the color may be due to the substitution of nitrogen atoms for carbon in the diamond crystal lattice.
Color diamonds are generally found in South America, Africa, Southern Asia, Northern Asia, and western region of Australia. Most of today's color diamond today come from Australia, Russia and Africa.