Fancy Colored Diamonds

Historically, some of the earliest blue diamonds were discovered in India. Over time, additional deposits were found in select regions of Africa. However, blue diamonds remain exceptionally rare, with only a limited number entering the global market each year.

Their rarity significantly increases their desirability — particularly among high-end collectors and diamond investors. Because supply is limited and demand continues to grow, blue diamonds have shown strong long-term value appreciation.

Owning a natural blue diamond is often considered a privilege reserved for connoisseurs. These stones are not only valuable but also geological marvels formed billions of years ago under immense pressure deep beneath the Earth’s surface.

Blue diamonds obtain their stunning hue from the presence of boron within their carbon structure. The higher the boron concentration, the deeper and more intense the blue colour.

Scientific studies suggest that these diamonds crystallize at significantly deeper levels within the Earth compared to most other diamonds. Some research even indicates that their boron content may have originated from ancient oceanic crust material that was carried deep into the Earth’s mantle through tectonic processes.

Despite their colour, blue diamonds are composed almost entirely of carbon, making them extremely durable and suitable for everyday jewellery wear.

Many natural blue diamonds also contain subtle grey undertones, which can further influence their rarity and grading.

The colour of blue diamonds — like all fancy coloured diamonds — is determined by respected gemological laboratories such as the Gemological Institute of America (GIA).

The GIA uses advanced technology and strict grading standards to evaluate:

• Hue
• Tone
• Saturation

For blue diamonds, deeper saturation levels such as Fancy Intense or Fancy Vivid command significantly higher prices.

One of the most iconic blue diamonds in history is the Hope Diamond. Known for its deep blue colour and fascinating history, it has become a symbol of mystery and luxury in popular culture.

Because of their rarity and increasing demand, blue diamonds are considered strong investment assets. Over the years, auction prices for high-quality natural blue diamonds have consistently broken records. For investors seeking diversification into tangible luxury assets, blue diamonds offer both emotional and financial value.

Yellow diamonds owe their colour to the presence of nitrogen during their formation. Nitrogen atoms absorb blue light, which results in the diamond reflecting a yellow hue.

The intensity of yellow can range from very light to deep, vivid shades.

Fancy yellow diamonds are graded based on colour intensity, including:

• Fancy Light Yellow
• Fancy Yellow
• Fancy Intense Yellow
• Fancy Vivid Yellow

The stronger and more saturated the yellow, the higher the value.

When yellow diamonds display secondary hues such as orange or green, their value may increase depending on the attractiveness and rarity of the combination.

When a yellow diamond displays a rich, deep, and intense golden tone, it is often referred to as a Canary Yellow Diamond or simply “Canary.”

This term became popular in the late 1800s when vibrant yellow diamonds were discovered in South Africa’s Cape Colony mines. These diamonds are particularly admired for their bold and luxurious appearance.

Compared to other fancy coloured diamonds like blue or green, yellow diamonds are relatively more affordable. This is largely because they are more commonly found. However, pricing still depends heavily on:

• Colour intensity
• Cut quality
• Clarity
• Carat weight
• Presence of secondary hues

Even slight colour variations can significantly impact value. For example:

• A pure vivid yellow stone commands a premium.
• A noticeable brownish tint may reduce value.
• Orange or green modifiers may increase desirability.

Before investing in yellow diamonds, consulting with experienced diamond professionals is highly recommended.

When purchasing a yellow diamond for jewellery, the metal setting plays a critical role.

• Yellow gold enhances warmth and harmony.
• White gold or platinum creates contrast, making the diamond appear more vibrant.

Choosing the right setting ensures the diamond’s colour stands out beautifully.

Green diamonds form at depths of approximately 150–200 kilometers beneath the Earth’s surface under extreme temperatures and pressures over millions of years.

Their colour is not caused by a chemical element like boron or nitrogen. Instead, it results from natural radiation exposure over long geological periods. This radiation alters the diamond’s crystal lattice structure, producing a green hue.

Many green diamonds originate from parts of South America and Africa, though production remains extremely limited.

Natural green diamonds generally fall into two categories:

1. Green Surface Shade: In these diamonds, the green colour appears only on the outer layer of the stone due to surface radiation exposure. Once cut or polished, some of the colour may be removed.

2. Green Body Colour: These diamonds display green colour throughout the entire stone. The hue is evenly distributed, resulting in stronger saturation and higher value.

Green body colour diamonds are significantly rarer and more valuable than surface-shaded stones.

Over recent years, green diamond prices have steadily increased. Due to their extreme rarity and growing demand, they are considered a strong long-term investment.

High-quality natural green diamonds have achieved remarkable results at international auctions, attracting collectors seeking unique and limited assets.

Green diamonds are admired for their striking and elegant appearance. Their colour ranges from soft mint tones to deep forest green shades. The interaction between light and the stone’s crystal structure creates a captivating visual effect that sets them apart from other coloured diamonds.