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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (10): Blue Gemstones - Opal Doublet Clear All
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Blue Opal Doublet Gem - 37.2ct Fancy Cabochon (ID: 357909)

Fancy Blue Opal Doublet

37.2ct
42.3 x 27.5 mm
$ 241.48
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2 pcs
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Blue Opal Doublet Gem - 2.8ct Oval Cabochon (ID: 391322)

Oval Blue Opal Doublet

2.75 ct (total 5.49ctw)
17.5 x 7.6 mm
$ 121.60
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Blue Opal Doublet Gem - 7.8ct Fancy Cabochon (ID: 446934)

Fancy Blue Opal Doublet

7.84 ct (total 15.67ctw)
26.1 x 11 mm
$ 235.05
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Blue Opal Doublet Gem - 0.7ct Oval Cabochon (ID: 249665)

Oval Blue Opal Doublet

0.72 ct (total 1.44ctw)
8 x 6 mm
$ 36.23
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Blue Opal Doublet Gem - 16.6ct Fancy Cabochon (ID: 357911)

Fancy Blue Opal Doublet

16.6ct
27.4 x 20.5 mm
$ 107.70
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Blue Opal Doublet Gem - 6.9ct Shark Fin Cabochon (ID: 357787)

Fancy Blue Opal Doublet

6.9ct
22.8 x 13.9 mm
$ 44.52
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Blue Opal Doublet Gem - 5.5ct Fancy Cabochon (ID: 357786)

Fancy Blue Opal Doublet

5.5ct
17 x 13.2 mm
$ 35.94
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Blue Opal Doublet Gem - 6.2ct Fancy Cabochon (ID: 357972)

Fancy Blue Opal Doublet

6.2ct
17.5 x 13.9 mm
$ 40.04
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Blue Opal Doublet Gem - 3.9ct Fancy Cabochon (ID: 420714)

Fancy Blue Opal Doublet

3.9ct
17.9 x 8.3 mm
$ 62.24
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Blue Opal Doublet Gem - 9.7ct Fancy Cabochon (ID: 509594)

Fancy Blue Opal Doublet

9.7ct
20.7 x 17.3 mm
$ 63.18
Item in Stock
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.
Certified Customer Reviews
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Great selection. Love the many learning features like articles and gem information. Prices competitive for natural stones. I do miss not having a selection of lab-made stones, CZ’s, etc, which are useful when price and cost are factors.
Posted By Dirk in January, 2019
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Overall Rating -> 10 star ratings
As Always never disappointed in any gemstone I purchase from this site. I have never had a problem. Thank-You Gemselect for offering such a comprehensive variety . I will continue to order from this site.
Posted By Brian in January, 2019
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Overall Rating -> 10 star ratings
Easy to find what i'm looking for on website, very clear, like photos
Posted By Lifter in January, 2019
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Overall Rating -> 10 star ratings
Better than what I expected. Beautifully cut gem!
Posted By in January, 2019
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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