Natural loose Fancy Color Diamonds & Colored Diamonds Jewelry

Blue Diamonds

About Blue Diamonds:

A truly pure diamond is made of pure carbon, and colorless. When a diamond has a color, it’s because of impurities mixed in with the carbon, or defects in the structure of the gem. But while slight discoloration makes a diamond less valuable, intense coloration—that is, when the hue is distinguishable as a color, instead of just looking slightly off from clear—is a valued characteristic.

For blue diamonds, the color comes from boron trapped in the crystal’s structure. They’re rare, with only about one in 200,000 diamonds showing a bit of blue, and far fewer displaying deep color.

How does the presence of boron create such stunning color? Clear diamonds are clear because the carbon atoms in them have no free electrons. That is to say, since a carbon atom has four electrons available for forming bonds, all four of its electrons get used up in the rigid, lattice-like structure that is diamond, where each carbon atom bonds with four neighboring ones. In this setting, visible light passes right through.

Boron atoms are close enough in size to carbon that some of them can easily take carbon’s place in that rigid structure. But boron has only three electrons available for bonding. This means that, wherever a boron atom is found in a diamond, one of its four carbon neighbors will have an unused electron. This absorbs red light. So white light coming through a boron-tainted diamond will come out blueish. You don’t need a lot of boron to make that happen—there are probably just a few boron atoms per million of carbon in the 45.5-carat “Hope” diamond, the most famous blue diamond.

But blue diamonds are far from the rarest: While they’re more uncommon than yellow diamonds, which have nitrogen in them, they lose out to green, black, pink, orange, purple, and red. Green diamonds are probably formed when natural radiation in the surrounding rock causes defects in the crystal structure. Pink and red diamonds are rare—a true red hue is the rarest of all. These gems are thought to be colored as they’re pushed up to the surface of the earth. The stress distorts the lattice structure, trapping electrons in a way that makes them absorb higher-frequency light (such as blue) and produce that reddish color.

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GIA Cushion 1.84ct. Fancy Blue Gray Diamond. GIA Cushion 1.84ct. Fancy Blue Gray Diamond. Quick View

GIA Cushion 1.84ct. Fancy Blue Gray Diamond.

$33,120.00

Color
Fancy Blue Gray
Size
Diamond's Specifications: Shape & Cutting Style: Cushion Brilliant. Carat Weight: 1.84 Carat. Measurements: 8.42x7.14x3.85 mm. Color Grade: Fan...
GIA Cushion 0.61ct. Light Blue SI1. Natural Blue Diamond Ring GIA Cushion 0.61ct. Light Blue SI1. Natural Blue Diamond Ring Quick View

GIA Cushion 0.61ct. Light Blue SI1. Natural Blue Diamond Ring

$18,000.00

Color
Light Blue
Size
Light Blue Diamond Specifications: Shape & Cutting Style: Cushion Modified Brilliant.  Measurements: 5.29x5.26x2.86 mm. Carat Weight: 0.61 Cara...
GIA Marquise 0.71ct. Fancy Gray Blue I2 Clarity Diamond. GIA Marquise 0.71ct. Fancy Gray Blue I2 Clarity Diamond. Quick View

GIA Marquise 0.71ct. Fancy Gray Blue I2 Clarity Diamond.

$16,330.00

Color
Fancy Gray Blue
Size
Natural Loose Gray Blue Diamond Specifications: Shape & Cutting Style: Marquise Brilliant. Measurements: 8.52x4.65x3.09 mm. Carat Weight: 0.71 ...
GIA Heart 0.68cttw. Fancy Grayish Violet & Fancy Deep Purplish Pink I1/SI1 Pair GIA Heart 0.68cttw. Fancy Grayish Violet & Fancy Deep Purplish Pink I1/SI1 Pair Quick View

GIA Heart 0.68cttw. Fancy Grayish Violet & Fancy Deep Purplish Pink I1/SI1 Pair

$34,000.00

Fancy Grayish Violet
Diamonds Specifications: Shape & Cutting Style: Heart Modified Brilliant. Measurements: 4.15x4.58x2.68 mm. Carat Weight: 0.37 Carat. Color Grad...
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GIA Cushion 1.26 Carat Very Light Blue SI2 Clarity Diamond Ring. GIA Cushion 1.26 Carat Very Light Blue SI2 Clarity Diamond Ring. Quick View

GIA Cushion 1.26 Carat Very Light Blue SI2 Clarity Diamond Ring.

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Very Light Blue
Natural Very Light Blue Diamond Ring Specifications: Shape & Cutting Style: Cushion Modified Brilliant. Measurements: 6.61x5.67x3.80 mm. Carat ...
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GIA Cushion 1.01ct. Light Blue SI2 Clarity Diamond GIA Cushion 1.01ct. Light Blue SI2 Clarity Diamond Quick View

GIA Cushion 1.01ct. Light Blue SI2 Clarity Diamond

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Light Blue
Light Blue Diamond Specifications: Shape & Cutting style: Cushion Modified Brilliant. Measurements: 6.10x5.99x3.50 mm. Carat Weight: 1.01 Carat...
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GIA Pear 1.27ct. Light Blue SI2 Clarity Diamond. GIA Pear 1.27ct. Light Blue SI2 Clarity Diamond. Quick View

GIA Pear 1.27ct. Light Blue SI2 Clarity Diamond.

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Light Blue
Light Blue Diamond Specifications: Shape & Cutting style: Pear Modified Brilliant. Measurements: 8.65x5.88x3.48 mm. Carat Weight: 1.27 Carat. C...
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GIA Pear 0.61cttw. F. Intense Green Blue VS2 Clarity Pair. GIA Pear 0.61cttw. F. Intense Green Blue VS2 Clarity Pair. Quick View

GIA Pear 0.61cttw. F. Intense Green Blue VS2 Clarity Pair.

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Fancy Intense Green Blue
Natural Loose Intense Green Blue Diamonds Specifications: Shape & Cutting Style: Pear Modified Brilliant. Measurements: 5.53x4.05x1.80 mm. Cara...
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GIA Octagon 0.77ct. Light Blue VS2 Clarity Diamond. GIA Octagon 0.77ct. Light Blue VS2 Clarity Diamond. Quick View

GIA Octagon 0.77ct. Light Blue VS2 Clarity Diamond.

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Light Blue
Light Blue Diamond Specifications: Shape & Cutting Style: Octagonal Modified Brilliant. Measurements: 5.55x5.52x3.14 mm. Carat Weight: 0.77 Car...
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GIA Pear 1.01 Carat Fancy Gray Blue I1 Clarity Diamond Ring. GIA Pear 1.01 Carat Fancy Gray Blue I1 Clarity Diamond Ring. Quick View

GIA Pear 1.01 Carat Fancy Gray Blue I1 Clarity Diamond Ring.

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Fancy Gray Blue
Fancy Gray Blue Diamond Specifications: Shape & Cutting Style: Pear Modified Brilliant. Measurements: 7.08x5.54x3.73 mm. Carat Weight: 1.01 Car...
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GIA Oval 0.28 Carat Fancy Light Grey Blue SI2 Clarity Diamond Ring. GIA Oval 0.28 Carat Fancy Light Grey Blue SI2 Clarity Diamond Ring. Quick View

GIA Oval 0.28 Carat Fancy Light Grey Blue SI2 Clarity Diamond Ring.

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Fancy Light Gray Blue
Natural Blue Diamond Specifications: Shape & Cutting Style: Oval Modified Brilliant. Measurements: 4.43x3.2x2.38 mm. Carat Weight: 0.28 Carat. ...
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GIA Cushion 0.85 Carat Fancy Light Greenish Blue SI1 Clarity Diamond. GIA Cushion 0.85 Carat Fancy Light Greenish Blue SI1 Clarity Diamond. Quick View

GIA Cushion 0.85 Carat Fancy Light Greenish Blue SI1 Clarity Diamond.

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Fancy Light Greenish Blue
Natural Loose Blue Diamond Specifications: Shape & Cutting Style: Cushion Modified Brilliant. Measurements: 5.67x5.63x3.25 mm. Carat Weight: 0....
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GIA Radiant 0.41 Carat Fancy Light Greenish Blue, SI1 Clarity Diamond. GIA Radiant 0.41 Carat Fancy Light Greenish Blue, SI1 Clarity Diamond. Quick View

GIA Radiant 0.41 Carat Fancy Light Greenish Blue, SI1 Clarity Diamond.

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Fancy Light Greenish Blue
Natural Loose Blue Diamond Specifications: Shape & Cutting Style: Cut-Cornered Rectangular Modified Brilliant. Measurements: 4.62x4.14x2.55 mm....
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GIA Cushion 1.00 Carat Very Light Blue SI2 Clarity, Diamond Ring. Quick View

GIA Cushion 1.00 Carat Very Light Blue SI2 Clarity, Diamond Ring.

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Very Light Blue
    Natural Blue Diamond Specifications:  Shape & Cutting Style: Cushion Modified Brilliant. Measurements: 6.38x5.12x3.46 mm. Carat Weight: 1....