Blue Diamonds are vastly considered one of the most relevant rarities in the diamond industry. Distinction, knowledge, and royalty are deeply rooted conceptually in blue diamonds.

Plenty of fancy diamonds, including blue-colored ones, had Indian origin. However, it is now South Africa, the country with the greatest production of diamonds, at this moment.

Australia has relevant mines too. For example, the Argyle Mine is well known for its blue and violet colors, usually containing grayish shades and shadows.

Pure Fancy Deep and Fancy Vivid Blue diamonds

The unique colors of fancy diamonds are derived from the elements that compose them. For example, the nitrogen in diamonds causes yellowish shades, while the presence of boron gives the characteristic blue hues. Natural blue diamonds are among the most uncommon.

The possible forms and complexions of blue diamonds are many. Understanding why and how high-quality diamonds are the way they are is key to becoming an experienced connoisseur of the diamond market.

The many shadows and hues of blue diamonds include Faint Blue, Very Light Blue, Light Blue, Fancy Light Blue, Fancy Blue, Fancy Deep Blue, and Fancy Vivid Blue. On occasions, a secondary hue may occur, which provides the possibility of a Fancy Dark appearance. In short, there are multiple categories of blue diamonds, starting from Pale Blue, to Intense and Fancy Dark Blue.

As we mentioned, the intensity levels of shades, hues, and presence of elements make blue diamonds a diverse family. Here we present a list of definitions from lower intensity to higher intensity:

• Faint
• Very Light
• Light

• Fancy Light
• Fancy
• Fancy Intense

• Fancy Deep
• Fancy Dark (if a secondary hue is present)
• Fancy Vivid

Blue diamonds provide collections the prestige, distinction, and value that other gemstones can’t provide. No matter the hue, from Faint Blue to Fancy Dark, blue diamonds give collectors and investment diamond buyers the possibility of owning something of great worthiness.

Boron is the element that provides blue diamonds with their unique shades and shapes. This fact explains why it is very rare to find diamonds with a pure, straight blue color. Generally speaking, blue diamonds come with Gray-Blue or Green-Blue hues. However, these are only a few of the tones of blue diamonds.

The images below show us all the various potential hues and intensities with Blue as the main color:

Gray-Blue, Grayish-Blue, and Violetish-Blue colored diamonds are structurally influenced by the boron elements mentioned above.

Type 2B diamonds represent only a small portion of those available and are significantly exclusive. Fancy colored diamonds are part of this unique category. Collectors and investment diamond buyers compete fiercely to have access to these rarest stones.

Nitrogen and boron combinations cause diamonds to adopt a characteristic Green-Blue or Greenish-Blue colored hues. These structures are also among the most wanted by specialized investment diamond buyers and collectors.

Source: Fancy Color Research Foundation

Over the 18-year period. The Straight Fancy Blue generated 191.2% with an annual return of 10.2%. Fancy Intense Blues 223.3% with an annual return of 11.9% and the Fancy Vivid´s 298.9% producing an annual return of 15.9%.*

*Source Fancy Color Research Foundation

The biggest blue diamond in the world is the Idol’s Eye, 70,21 ct. Around 1607, the stone is said to have been belonged to a persian prince named Rehab. In 1947, the Idol’s Eye is sold to Mrs May Bonfils Stanton, Frederick G. Bonfils’s daughter, the publisher and co-founder of the Denver Post newspaper, who liked wearing the Idol’s Eye to breakfast every morning. According to a romantic tale, the Idol’s Eye has been torn from a statue’s eye of a Hindu deity venerated in India.