Exotic Natural Colors
The vast majority of blue diamonds owe their color to the presence of boron. The bonding of boron to carbon causes absorption in the red, yellow and green parts of the spectrum producing a blue color. Blue Diamonds may contain a gray, violet or greenish modifying color.
Unique among natural color diamonds green diamonds acquire their color after their trip to the earths surface when they rest in the ground near naturally occurring radiation. This radiation pushes into the diamond causing absorption in the red and yellow regions of the spectrum producing a green color. Green Diamonds can contain a yellowish, bluish or grayish modifying color.
The vast majority of all diamonds contain some nitrogen. In orange diamonds the nitrogen atoms have grouped themselves in a very specific way. This happens during and right after the diamond is formed. These nitrogen arrangements absorb light in the blue and yellow region of the spectrum producing an orange color. Orange Diamonds may contain a brown, yellow or pinkish modifying color.