What Color Is A Blue Diamond?

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The Enigmatic Blue Diamond: Unraveling Its True Colors

When it comes to precious gemstones, diamonds are undoubtedly one of the most coveted and valuable stones. And among all the colors of diamonds, blue diamonds are the rarest and most mysterious of them all.

What is a Blue Diamond?

A blue diamond is a type of diamond that is naturally colored blue. Unlike other colored diamonds, which get their hues from impurities or structural defects, blue diamonds get their color from the presence of boron during the diamond’s formation process. The intensity of the blue color can vary, ranging from pale blue to vivid blue.

The Color of a Blue Diamond

Despite its name, a blue diamond is not purely blue in color. Instead, it can have a range of secondary colors, such as gray, green, or violet. The secondary color can affect the overall appearance and value of the diamond. For example, a blue diamond with a gray secondary color is considered less valuable than one with a pure blue hue.

Grading Blue Diamonds

Just like other diamonds, blue diamonds are graded based on their color, clarity, cut, and carat weight. The Gemological Institute of America (GIA) uses a scale that ranges from Faint to Fancy Vivid for colored diamonds, with Fancy Vivid being the most desirable.

The Pros and Cons of Blue Diamonds


  • Exclusivity: Blue diamonds are incredibly rare, with only a few mines in the world producing them. This makes them highly sought after and valuable.
  • Unique Beauty: Blue diamonds have a distinctive and mesmerizing beauty that is unmatched by any other gemstone. Their rarity and unique color also make them a status symbol among collectors and connoisseurs.
  • Investment Potential: Blue diamonds have been known to appreciate in value over time, making them a potentially lucrative investment.


  • Cost: Due to their rarity and exclusivity, blue diamonds are incredibly expensive. This makes them out of reach for most people.
  • Color Grading: The secondary color of a blue diamond can greatly affect its value and appearance. This can make it difficult to find a truly pure blue diamond, which is the most desirable.
  • Treatment: Some blue diamonds may be treated to enhance their color, which can affect their value and authenticity.

The Bottom Line

Overall, blue diamonds are a fascinating and alluring gemstone that have captivated the hearts of people for centuries. While they come with their own set of pros and cons, their rarity, beauty, and investment potential make them a highly prized possession for those who can afford them.

Color Intensity
Light Blue Faint to Very Light
Blue Light to Fancy Deep
Vivid Blue Fancy Vivid

Whether you’re a collector, investor, or simply an admirer of beautiful gemstones, blue diamonds are definitely worth exploring.

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