Diamonds naturally occur in every color of the rainbow.

Diamonds are composed of carbon atoms arranged in a crystal lattice, but natural variations during formation create distinct colors. The Gemological Institute of America (GIA) classifies these as 'fancy color diamonds' when they exhibit hues beyond the standard D-to-Z scale. Nitrogen is the most common impurity, absorbing blue light to make the diamond appear yellow. Boron impurities are much rarer and result in blue diamonds, such as the famous 45.52-carat Hope Diamond.Green diamonds are exceptionally rare because they require exposure to natural radiation over millions of years. This radiation displaces carbon atoms from their normal positions in the crystal structure, causing the stone to reflect green light. The 41-carat Dresden Green is the most famous example of this phenomenon, having been part of the Saxon Crown Jewels since 1741.Pink and red diamonds are unique because they do not contain coloring elements like nitrogen or boron. Instead, they are formed through a process called plastic deformation. Intense heat and pressure deep within the Earth distort the crystal lattice, changing how the diamond absorbs light. Over 90% of the world's pink diamonds were sourced from the Argyle Mine in Australia before its closure in 2020.