Colored diamonds are among the most stunning and unique gemstones, prized for their vibrant hues and rarity. Whether you’re searching for a blue diamond, a pink diamond, or an ultra-rare red diamond, Ratan Sajan Diamonds offers a wide selection of these extraordinary stones. In this guide, we’ll explain everything you need to know about colored diamonds, from their grading to their value and types.

What Are Fancy Colored Diamonds?
Fancy colored diamonds come in a wide spectrum of colors, including red, pink, purple, blue, green, orange, yellow, brown, gray, black, violet, and even white. Within each color category, there are various shades and combinations, resulting in hundreds of potential color variations. Unlike colorless diamonds, which are graded on the absence of color, colored diamonds are evaluated based on the presence, intensity, and distribution of their color. These beautiful colors occur due to natural chemical impurities, structural anomalies during the diamond’s formation, or exposure to radiation.

Grading Fancy Colored Diamonds
The primary difference between colorless diamonds and fancy colored diamonds lies in how they are graded. While colorless diamonds are assessed on the absence of color using the D-to-Z scale, fancy colored diamonds are graded based on three essential attributes:
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Hue: The actual color of the diamond (e.g., pink, blue, green)
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Tone: The lightness or darkness of the color
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Saturation: The intensity or strength of the color

Fancy colored diamonds are categorized into different grades, including Fancy Light, Fancy, Fancy Intense, Fancy Vivid, and Fancy Deep. The higher the saturation and rarity of the color, the more valuable the diamond is. These diamonds are cherished not just for their vibrant color but also for their exceptional rarity, making them highly sought after in the market.
Types of Colored Diamonds
Ratan Sajan Diamonds offers an exquisite collection of both natural colored diamonds and lab-grown colored diamonds. Let’s dive deeper into each type:
Natural Colored Diamonds
Natural colored diamonds get their stunning hues from unique conditions during their formation deep within the Earth’s mantle. Various trace elements or structural distortions in the diamond’s crystal lattice contribute to their color:
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Yellow and brown diamonds often contain nitrogen.
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Blue diamonds may contain boron.
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Green diamonds gain their color through natural radiation exposure.
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Pink and red diamonds typically result from plastic deformation, which is a structural distortion in the crystal lattice.
These natural colored diamonds are sourced from renowned diamond mines in regions like Australia, Africa, and Brazil. Due to their natural formation and limited availability, these diamonds, especially those with strong color saturation, command high prices in the market.
Lab-Grown Colored Diamonds
In addition to natural diamonds, Ratan Sajan Diamonds also offers lab-grown colored diamonds produced in laboratory environments using two primary methods: High Pressure High Temperature (HPHT) and Chemical Vapor Deposition (CVD). These processes replicate the natural conditions of diamond formation, allowing for more control over the resulting color.
Sometimes, lab-grown diamonds are treated after growth to enhance their color. For example, HPHT treatments can introduce or remove color by altering atomic structure or impurity concentration. Lab-grown colored diamonds can be created in nearly any hue, often at a significantly lower cost than natural colored diamonds. Due to their ethical sourcing and affordability, lab-grown colored diamonds have become a popular choice for those seeking vibrant color and sustainability.
Colored Diamonds Value
The value of colored diamonds is primarily determined by the color’s intensity, rarity, size, and origin. Unlike white diamonds, where clarity and cut are the main pricing factors, color is the most significant factor when pricing fancy colored diamonds.
Diamonds with strong, pure colors, such as Fancy Vivid Pink or Fancy Deep Blue, are far more valuable than those with light or uneven color distribution. Natural colored diamonds are generally more expensive than lab-grown stones, as they are rarer and more difficult to find in nature.
Prices for fancy colored diamonds can range from a few thousand dollars per carat for Fancy Light Yellow or brown diamonds to several million dollars per carat for intensely saturated pink, blue, or red diamonds. These diamonds are not just considered fine jewelry but are also valuable assets and long-term investments for collectors and institutions.
Rare Colored Diamonds
Some of the rarest and most valuable colored diamonds are those with unique hues or those that are found in limited quantities. These rare diamonds include:
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Red diamonds: Considered the rarest of all, with fewer than a few dozen true Fancy Red diamonds graded by the Gemological Institute of America (GIA).
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Blue diamonds: Exceptionally rare and valuable, famously represented by the Hope Diamond.
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Green diamonds: Naturally irradiated green diamonds are rare and difficult to find with even, saturated color.
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Pink diamonds: Increasingly rare and have seen a surge in value, especially those from the now-closed Argyle Mine.
These rare colored diamonds are highly coveted by collectors and investors for their historical significance, scarcity in the market, and lasting value.

Why Choose Fancy Colored Diamonds from Ratan Sajan Diamonds?
Whether you're looking to purchase a blue diamond, a pink diamond, or a rare red diamond, Ratan Sajan Diamonds offers a diverse and exquisite selection of both natural colored diamonds and lab-grown colored diamonds. Our diamonds are sourced with integrity and crafted to perfection, offering you the finest in luxury, quality, and sustainability.
Explore our wide range of fancy colored diamonds today and discover the perfect diamond that suits your personal taste, style, and investment goals. At Ratan Sajan Diamonds, we are committed to offering only the most exceptional gemstones, backed by our expertise and customer-centric service.