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Diamond color grading

Lab-Created Colored Diamonds: Science, Grading & Meaning

Colored diamonds have long captivated jewelry enthusiasts and collectors alike. Their unique hues and rare beauty make them stand out among traditional colorless diamonds. In recent years, lab-created diamonds have emerged as a fascinating alternative, offering a wide array of colors and possibilities. This blog post delves into the world of color formation in diamonds and explores the significance of various hues, with a special focus on how lab-created diamonds achieve their diverse color palette.

How Do Diamonds Get Their Colours?

Diamonds, both natural and lab-created, get their captivating colors from two main factors: chemical impurities and structural defects within the diamond’s crystal structure.
In natural diamonds, trace elements like nitrogen, boron, and hydrogen can become trapped in the diamond during its formation deep beneath the Earth’s surface. These chemical impurities interact with the carbon atoms, absorbing and reflecting different wavelengths of light. For example:

  • Nitrogen impurities absorb blue light and reflect yellow, creating yellow diamonds.
  • Boron impurities absorb red and yellow light, resulting in blue diamonds.
  • Structural defects, or irregularities in the diamond’s crystal lattice, can also affect color by changing how light is absorbed or reflected:
  • Vacancies (missing carbon atoms) can create pink and red hues.
  • Dislocations (misaligned carbon atoms) can result in green diamonds by absorbing red light and reflecting green.
    natural colored diamonds

In lab-created diamonds, scientists control the color formation process by introducing specific chemical impurities and manipulating the growth environment. They carefully adjust factors like:

  • Type and amount of impurities (e.g., nitrogen for yellow, boron for blue)
  • Pressure and temperature during growth
  • The ratio of carbon to other gases in the growth chamber

By fine-tuning these variables, lab-created diamond manufacturers can create a wide range of colors, from classic fancy yellows and pinks to rare greens, purples, and oranges.

How to Grade the Color of Diamonds

Grading the color of diamonds is a crucial aspect of determining their value and appeal. The two main scales used for this purpose are the standard diamond color grading scale, which is applied to colorless to near-colorless diamonds, and the Fancy color grading system, used for diamonds with more distinct colors.

The Standard Diamond Color Grading Scale

The Gemological Institute of America (GIA) developed the standard diamond color grading scale to assess diamonds ranging from colorless to light yellow or brown. This scale starts at D, representing completely colorless diamonds, and progresses through the alphabet to Z, indicating diamonds with a noticeable yellow or brown tint.

Each letter grade represents a subtle difference in color, which can be difficult to perceive with the untrained eye. For example:

  • D, E, and F grades: These diamonds are considered colorless, with only minute differences between them.
  • G, H, I, and J grades: These diamonds are near-colorless, with slightly more noticeable color variations.
  • K, L, and M grades: These diamonds have a faint yellow or brown tint.
  • N through Z grades: These diamonds have a more noticeable yellow or brown hue.

Diamonds closer to the D grade are rarer and more valuable, as the absence of color allows their brilliance and fire to be more apparent.

The Fancy Color Grading System

Diamonds with pronounced, saturated colors are graded using the Fancy color grading system, which evaluates hue (primary color), tone (lightness or darkness), and saturation (intensity). Fancy-colored diamonds are graded from Faint to Vivid.

A Faint diamond will have a subtle hint of color, while a Very Light diamond’s color will be slightly more noticeable. Light diamonds have a clearly visible but mild color, and Fancy Light diamonds showcase a more pronounced and attractive hue. Fancy diamonds boast a rich and vibrant color, Fancy Intense diamonds have a deeply saturated and eye-catching appearance, and Fancy Vivid diamonds display an extremely intense and captivating color, making them the most sought-after and valuable.

Some popular Fancy diamond colors include Fancy Yellow, which can range from light champagne to vivid canary yellow; Fancy Pink, which can vary from light blush to intense bubble gum pink; and Fancy Blue, which can span from light sky blue to deep ocean blue.

Grading Lab-Grown Colored Diamonds

Lab-grown colored diamonds are graded using the same color classification systems as natural diamonds, ensuring consistency and standardization when describing and comparing the colors of both types of stones.

Like natural diamonds, lab-grown diamonds can exhibit a wide range of colors, from subtle yellows and pinks to vibrant greens and blues. The grading process considers the same factors – hue, tone, and saturation – to accurately assess the diamond’s color.

Popular Diamond Colors and Their Meanings

Each diamond color carries its own unique symbolism and emotional associations. Here are some of the most popular diamond colors and their meanings:

Yellow Diamonds

Yellow diamonds are associated with cheerfulness, optimism, and prosperity. They are thought to stimulate the mind and promote creativity, making them a popular choice for those seeking a bright and uplifting gemstone.

Blue Diamonds

Blue diamonds are often linked to serenity, peace, and loyalty. They are believed to have a calming effect on the mind and can evoke feelings of trust and stability. Blue diamonds are also associated with wisdom and spirituality.

Pink Diamonds

Pink diamonds are the ultimate symbol of romance, love, and creativity. They are said to promote feelings of tenderness and affection, making them a popular choice for engagement rings and other romantic jewelry pieces.

Green Diamonds

Green diamonds are connected to growth, balance, and natural beauty. They are thought to promote harmony and well-being and are often associated with prosperity and abundance.

Black Diamonds

Black diamonds are symbols of power, elegance, and sophistication. They are believed to provide protection and strength and are often chosen by those who want to make a bold and confident statement with their jewelry.

In addition to these popular colors, lab-grown diamonds can also be created in less common shades, such as purple, orange, and red. Each color has its own unique appeal and can be chosen based on personal preferences and the desired emotional connection.much like how the choice of finger to adorn with a ring can communicate different sentiments and intentions. To further explore this symbolism, discover the meaning behind every finger when selecting the perfect ring to complement your lab-grown diamond.

Stunning Lab-Grown Diamond Jewelry from BrilliStar

When searching for the perfect lab-grown colored diamond, consider factors like color intensity, hue, clarity, and cut. Working with reputable suppliers can help you find a stunning and meaningful diamond that suits your style and budget.

To aid in your search, we’re excited to showcase a selection of exquisite pieces from BrilliStar. These carefully crafted items demonstrate the beauty and versatility of lab-grown diamonds, offering a range of designs for every taste and occasion.

The 14K Gold Pear & Round Lab-Diamond Tennis Bracelet is a standout piece, featuring a captivating blend of pear and round-shaped lab-grown diamonds set in lustrous 14K gold. With a total carat weight of 4.72 and an average color and clarity of DE SI-VS, this bracelet is both stylish and sustainable.

14K Gold Pear&Round Lab-Diamond Tennis Bracelet

For a more understated look, consider the 14K Gold Dew-Edge Lab-Diamond Tennis Bracelet. The delicate design resembles glistening morning dew, with each lab-grown diamond precisely set to maximize its brilliance.

If you’re seeking a stunning anniversary band, the Eight Stones Oval Shared Prong Lab Grown Diamond Anniversary Band is a perfect choice. The skillfully designed prong setting beautifully showcases the brilliance of each oval-shaped lab-grown diamond.

Eight Stones Oval Shared Prong Lab Grown Diamond Anniversary Band

The Round And Pear Lab Grown Diamond Alternating Anniversary Band features a unique and eye-catching design, with alternating round and pear-shaped lab-grown diamonds creating a sense of depth and movement.

No jewelry collection is complete without stunning earrings. The 14K Slender Round Lab-Diamond Drop Earrings feature a shimmering cascade of alternating-sized lab-grown diamonds set in elegant 14K gold.

14K Slender Round Lab-Diamond Drop Earring

Lastly, the Colorless (D-F) Lab Grown Diamond Emerald Halo Earrings showcase a breathtaking emerald-shaped center diamond surrounded by a halo of brilliant round diamonds, offering a classic look with a modern twist.

Experience the Magic of Lab-Grown Colored Diamonds

Lab-grown colored diamonds provide a beautiful, eco-friendly alternative to natural diamonds. Understanding the science behind color formation and the symbolic meanings of different hues allows you to choose a lab-grown diamond that resonates with your style and values. BrilliStar’s stunning collection showcases the innovation and beauty of lab-grown diamond jewelry, offering a wide range of colors and designs. As lab-grown colored diamonds become more accessible, you can now experience the joy and brilliance of these remarkable gemstones. Embrace the future of diamond jewelry and discover the magic of lab-grown colored diamonds today.

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