What Color Diamond Is The Most Expensive?

Diamonds have been treasured for centuries for their rarity, beauty, and value. They are often given as gifts for special occasions, such as engagements and weddings. The value of a diamond is determined by several factors, including the four Cs: cut, clarity, carat, and color. In this blog, we will explore which color diamond is the most expensive and why.

The Four Cs of Diamonds

When evaluating a diamond's value, the four Cs are taken into consideration. The cut determines how well the diamond reflects light and sparkles. Clarity refers to the absence of inclusions or flaws in the diamond. Carat measures the weight of the diamond, with larger diamonds being more valuable. Finally, color refers to the hue of the diamond, with colorless diamonds being the most valuable.

Importance of Color in Determining a Diamond's Value

While all four Cs are important in determining a diamond's value, color plays a significant role. Colorless diamonds are the most valuable because they allow the most light to pass through, creating a stunning sparkle. However, natural-colored diamonds are also highly sought after, with certain colors being rare and more valuable than others.

Natural Colored Diamonds

Diamonds can come in a range of colors, including pink, blue, yellow, and green. The color of a diamond is determined by the presence of trace elements or structural imperfections in the diamond's crystal lattice. For example, nitrogen impurities can give a diamond a yellow hue, while boron impurities can make a diamond blue.

Some of the most famous and expensive natural-colored diamonds include the Pink Star, a 59.60-carat pink diamond, and the Blue Moon of Josephine, a 12.03-carat blue diamond.

The Rarity of Red Diamonds

Red diamonds are the rarest and most valuable of all colored diamonds. It is estimated that only 20 to 30 true red diamonds exist in the world. The red color is caused by a deformation in the diamond's crystal lattice, making it highly prized by collectors and investors.

Some of the most famous and expensive red diamonds include the Moussaieff Red, a 5.11-carat red diamond, and the Hancock Red, a 0.95-carat red diamond.

Comparison of Red Diamond Prices to Other Colored Diamonds

Due to their rarity, red diamonds are significantly more valuable than other colored diamonds. For example, a 0.50-carat red diamond can be worth over $1 million, while a 1-carat yellow diamond may only be worth $10,000 to $20,000.

The Influence of Treatment on Diamond Color

Diamond treatments, such as irradiation and HPHT (high-pressure high-temperature) treatments, can alter the color of a diamond. While treated diamonds can be beautiful, they are generally considered less valuable than naturally colored diamonds. This is because the treatment process is seen as artificially enhancing the diamond's color, rather than the color being a natural occurrence.


In conclusion, with G Marie Luxuries, it is clear that the color of a diamond is a crucial factor in determining its value. While colorless diamonds are the most valuable, certain naturally colored diamonds, such as pink, blue, and yellow, can also be highly sought after and expensive. However, it is the red diamond that holds the title of being the rarest and most valuable of all colored diamonds. As for treated diamonds, while they can be beautiful, they are generally considered less valuable than naturally colored diamonds. As you search for your perfect diamond, keep in mind the significant role that color plays in determining its value and rarity.