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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (395): Blue Gemstones Clear All
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Light Blue Aquamarine Gem - 9.7ct Octagon / Scissor Cut (ID: 503396)

Octagon / Emerald Cut Blue Aquamarine

9.7ct
16.3 x 9.4 mm
$ 1,455.00
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1 pc
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Light Blue Aquamarine Gem - 11.9ct Octagon / Scissor Cut (ID: 450371)

Octagon / Emerald Cut Blue Aquamarine

11.9ct
17.4 x 10 mm
$ 2,967.50
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279571)

Octagon / Emerald Cut Blue Iolite

0.45 ct (total 2.68ctw)
5.9 x 3.9 mm
$ 32.16
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1 pc
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Blue Zircon Gem - 5.3ct Octagon Facet (ID: 353875)

Octagon / Emerald Cut Blue Zircon

5.3ct
10 x 6.4 mm
$ 540.00
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4 pcs
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Blue Kyanite Gem - 1.2ct Octagon Step Cut (ID: 288390)

Octagon / Emerald Cut Blue Kyanite

1.18 ct (total 4.73ctw)
7.2 x 5 mm
$ 112.34
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1 pc
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Light Blue Aquamarine Gem - 13.8ct Octagon / Scissor Cut (ID: 450375)

Octagon / Emerald Cut Blue Aquamarine

13.8ct
18.4 x 10.3 mm
$ 2,762.00
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4 pcs
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Swiss Blue Topaz Gem - 2.2ct Octagon Facet (ID: 372379)

Octagon / Emerald Cut Blue Topaz

2.18 ct (total 8.72ctw)
8.1 x 6.1 mm
$ 61.04
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Light Blue Aquamarine Gem - 13.9ct Octagon / Scissor Cut (ID: 450376)

Octagon / Emerald Cut Blue Aquamarine

13.9ct
25.6 x 8.4 mm
$ 2,780.00
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Light Blue Aquamarine Gem - 40.6ct Octagon Step Cut (ID: 264265)

Octagon / Emerald Cut Blue Aquamarine

40.6ct
22 x 17.5 mm
$ 12,995.00
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Blue Kyanite Gem - 2.6ct Octagon Step Cut (ID: 470967)

Octagon / Emerald Cut Blue Kyanite

2.6ct
9 x 7 mm
$ 136.73
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Light Blue Aquamarine Gem - 2.7ct Octagon Step Cut (ID: 486935)

Octagon / Emerald Cut Blue Aquamarine

2.7ct
8.4 x 7.3 mm
$ 221.29
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Light Blue Aquamarine Gem - 6ct Octagon Facet (ID: 412445)

Octagon / Emerald Cut Blue Aquamarine

6ct
12.6 x 8.2 mm
$ 1,045.74
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Cornflower Blue Sapphire Gem - 3.8ct Octagon / Scissor Cut (ID: 439697)

Octagon / Emerald Cut Blue Sapphire

3.8ct
11.5 x 6.5 mm
$ 7,520.00
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Blue Sapphire Gem - 4.9ct Octagon / Scissor Cut (ID: 487099)

Octagon / Emerald Cut Blue Sapphire

4.9ct
11.7 x 7.1 mm
$ 8,144.24
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1 pc
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Light Blue Aquamarine Gem - 13.5ct Octagon / Scissor Cut (ID: 450374)

Octagon / Emerald Cut Blue Aquamarine

13.5ct
19.3 x 9.7 mm
$ 3,385.00
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279630)

Octagon / Emerald Cut Blue Iolite

0.52 ct (total 3.11ctw)
5.9 x 4 mm
$ 37.32
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4 pcs
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Light Blue Aquamarine Gem - 0.7ct Octagon Step Cut (ID: 466054)

Octagon / Emerald Cut Blue Aquamarine

0.65 ct (total 2.59ctw)
6.5 x 3.8 mm
$ 77.70
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10 pcs
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Violet Blue Iolite Gem - 0.2ct Octagon Facet (ID: 412427)

Octagon / Emerald Cut Blue Iolite

0.23 ct (total 2.26ctw)
4.9 x 2.9 mm
$ 45.20
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10 pcs
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Violet Blue Iolite Gem - 0.2ct Octagon Facet (ID: 412428)

Octagon / Emerald Cut Blue Iolite

0.22 ct (total 2.21ctw)
5 x 3 mm
$ 44.20
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2 pcs
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Swiss Blue Topaz Gem - 1.9ct Octagon-Cut Sugarloaf Cabochon (ID: 353895)

Octagon / Emerald Cut Blue Topaz

1.94 ct (total 3.88ctw)
6.9 x 6.9 mm
$ 27.16
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8 pcs
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Violet Blue Iolite Gem - 0.3ct Octagon Facet (ID: 412256)

Octagon / Emerald Cut Blue Iolite

0.27 ct (total 2.17ctw)
5.1 x 3 mm
$ 43.40
Item in Stock
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Blue Gemstones
Blue sapphire is probably the best-known and most valuable blue gemstone, but it is not the only choice. Shop from our extensive collection of blue gemstones, including blue sapphire, tanzanite, blue tourmaline, fluorite, blue zircon, iolite, lapis lazuli, turquoise, sky blue, Swiss blue and London blue topaz, and many more. Choose from various sizes, cuts, shapes and shades of blue. Blue gemstones are ideal for both men and women's jewelry designs and both fine and tribal style jewelry. From this page, you can filter the results further by using the left-hand menu. For instance, you can shop by gem type, shape or cutting style. Using the check boxes at the top, results can be narrowed even further by singles, lots, faceted or cabochon gems. By using the top menu, you can search by origin, carat weight, size, price and other factors, to enable you to find the exact gemstone that you are looking for. All items are in stock and ready to ship.
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Better than what I expected. Beautifully cut gem!
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Gem select is the most trustworthy web site for gems. What I see in the picture is exactly what I get. Size is indicated by carat weight, and not the picture size, as they are trying to give an up close view of the gem I am hoping to buy. It was so easy to find the stones I was looking for at a price I could afford.
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart