What are loose blue diamonds?

Loose blue diamonds are unmounted, natural gemstones known for their stunning blue color and rarity. These gems are often used to create custom jewelry, such as engagement rings, or kept as investment pieces.

Are GIA-certified blue diamonds better?

Yes, GIA-certified blue diamonds are highly recommended as they guarantee the gemstone's authenticity, quality, and details like cut, clarity, and carat weight. Choosing GIA-certified loose blue diamonds ensures you’re purchasing a genuine and valuable stone.

What makes fancy blue diamonds unique?

Fancy blue diamonds are prized for their vivid blue color and are rarer than traditional diamonds. Their unique hues, combined with exceptional clarity and cuts, make them a favorite choice for collectors and jewelry designers.

Can I use loose blue diamonds for engagement rings?

Absolutely! Loose blue diamonds are perfect for custom engagement rings. Their natural beauty and versatility allow you to choose the ideal cut and setting for a unique and meaningful design.

How do I care for my loose blue diamonds?

To maintain the brilliance of your loose blue diamonds, clean them regularly with a soft cloth and mild soap. Avoid exposing them to harsh chemicals and store them separately to prevent scratches on the surface.

Are loose blue diamonds a good investment?

Yes, loose blue diamonds, especially rare or GIA-certified stones, are considered excellent investments due to their rarity and increasing market demand. Their natural beauty and timeless appeal make them valuable assets.

What factors determine the value of a loose blue diamond?

The value of a loose blue diamond depends on its color intensity, clarity, cut quality, and carat weight. Rare fancy blue diamonds or those with vivid blue hues often command higher prices.

Are there different cuts available for loose blue diamonds?

Yes, loose blue diamonds come in various cuts, including round, princess, emerald, and cushion. Each cut enhances the stone's brilliance and highlights its natural blue color.

What is the difference between natural and treated blue diamonds?

Natural blue diamonds derive their color from boron within the stone, while treated diamonds undergo processes like irradiation to achieve a blue hue. Natural blue diamonds, such as those in our collection, are more valuable and sought after.

Where can I buy high-quality loose blue diamonds?

You can find high-quality loose blue diamonds, including rare fancy blue diamonds and GIA-certified options, from trusted gemstone dealers. Look for vendors offering a wide selection of cuts, sizes, and colors to suit your needs.

Loose Blue Diamonds for Sale – Natural and Fancy Blue Diamond Stones, Certified Diamond

Diamond

Blue Diamond Weight

Blue Diamond Size

Blue Diamond Clarity

Blue Diamond Price

Size Explained

Choose Size or Size Range

For Example: 6-7

For Example: 8-9

Bi-color

Black

Blue Blue Diamond

Brown

Golden

Gray

Green

Multicolor

Orange

Pink

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Red

Turquoise

Violet

White

Yellow

Single

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Lots

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0.06ct Blue Diamond, Round, VS-SI

2.5 mm (calibrated)

$ 67.07

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0.09ct Blue Diamond, Square, SI

2.6 x 2.5 mm

$ 100.60

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0.03ct Blue Diamond, Round, SI

2.1 mm (calibrated)

$ 30.44

View Gem

0.06ct Blue Diamond, Round, VS-SI

2.5 mm (calibrated)

$ 59.76

View Gem

0.04ct Blue Diamond, Round, VVS

2.1 mm (calibrated)

$ 39.84

View Gem

0.06ct Blue Diamond, Square, VVS-VS

2.2 x 2.1 mm

$ 67.07

View Gem

0.04ct Blue Diamond, Round, VVS-VS

2.1 mm (calibrated)

$ 48.70

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0.02ct Blue Diamond, Round, VS

1.9 mm

$ 24.34

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0.07ct Blue Diamond, Round, VS

2.5 mm (calibrated)

$ 83.07

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0.07ct Blue Diamond, Round, VS

2.6 mm (calibrated)

$ 78.24

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0.07ct Blue Diamond, Round, VS

2.5 mm (calibrated)

$ 69.22

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0.07ct Blue Diamond, Round, VS

2.5 mm (calibrated)

$ 78.24

View Gem

0.04ct Blue Diamond, Round, VS-SI

2.3 mm (calibrated)

$ 37.26

View Gem

0.03ct Blue Diamond, Round, VS

2.3 mm (calibrated)

$ 33.53

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0.05ct Blue Diamond, Round, VVS-VS

2.1 mm (calibrated)

$ 49.80

View Gem

0.06ct Blue Diamond, Square, VS

2.1 x 1.9 mm

$ 67.07

View Gem

0.02ct Blue Diamond, Square, VS

2 x 1.8 mm

$ 22.36

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0.03ct Blue Diamond, Round, VS

2.2 mm (calibrated)

$ 29.88

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0.05ct Blue Diamond, Round, VS

2.3 mm (calibrated)

$ 49.80

View Gem

0.05ct Blue Diamond, Round, VS-SI

2.1 mm (calibrated)

$ 41.50

View Gem

0.06ct Blue Diamond, Round, VS

2.3 mm (calibrated)

$ 59.76

View Gem

0.07ct Blue Diamond, Square, VS-SI

2.1 x 2.1 mm

$ 65.20

View Gem

0.05ct Blue Diamond, Square, VS

2 x 2 mm (calibrated)

$ 55.89

View Gem

0.04ct Blue Diamond, Round, VVS-VS

2.3 mm (calibrated)

$ 33.20

View Gem

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Why Buy Blue Diamond from GemSelect?

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GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10

Enjoy viewing the selections. Excellent product

Posted By ToRa.62 in April, 2026

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Overall Rating -> 10

I could see the actual gem I was buying

Posted By Bugs in December, 2025

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Overall Rating -> 10

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025

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Overall Rating -> 10

Absolutely love the website, selection and products. Can you guys add a gemstones with inclusions tab. I like those it'd be nice to have them all in one place but i do understand it would be alot of work to go through and categorize them. Thank you anyways

Posted By The homie edgar in December, 2025

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Overall Rating -> 10

Very good

Posted By Niska in August, 2025

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Overall Rating -> 10

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025

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