Fancy color diamonds are a glittering exception in the world of diamonds; their color enhances their attractiveness and value. These diamonds are available in intense colors like yellow, pink, blue, and green, with even rarer hues such as orange, purple, and red.

The grading of these stones is greatly influenced by their color saturation, which stands in stark contrast to the traditional D-to-Z color scale used for colorless to light-yellow diamonds. Fancy color diamonds captivate with their beauty and rarity, born from unique conditions that allow for their extraordinary appearance.

How Diamonds Gain Color

The major cause of color in diamonds is impurities and some structural anomalies arising during their formation. Here's how each factor contributes to the color spectrum of diamonds:

  • Colorless to Yellow: The common colors of diamonds range from colorless to yellow, primarily due to nitrogen molecules. The higher the nitrogen content, the yellow a diamond appears. Colorless diamonds are rare and valuable, as they allow most light to penetrate, maximizing brilliance and sparkle.
  • Blue Diamonds: The blue color in diamonds comes from boron atoms within the crystal structure. The blue intensity depends on the boron content. Blue diamonds are very rare and highly sought after.
  • Pink and Red Diamonds: The exact cause of pink and red hues in diamonds is unclear but is thought to be related to structural changes under intense pressure during formation. These diamonds are among the most expensive and rarest.
  • Green Diamonds: Green coloration in diamonds results from radiation exposure during crystallization, affecting the surface color or penetrating deeper. Green diamonds are rare and prized for their unique color.
  • Brown and Chocolate Diamonds: These colors result from structural changes under high pressure during formation. Marketing advances have made brown and chocolate diamonds more popular in jewelry.
  • Yellow and Orange Diamonds: Nitrogen also influences yellow and orange hues in diamonds, with the specific nitrogen arrangement affecting the color intensity and type.
  • Black Diamonds: Known as 'Carbonado,' black diamonds contain numerous inclusions of graphite and other impurities, giving them a distinct dark color. They are more porous than other diamonds, with a unique appearance and structure.


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