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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (1054): Opal Cabochons - Fire Opal, Shop Opal at GemSelect, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal Clear All
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6.9ct Pear Cabochon Multicolor Black Opal Gem (ID: 330246)
6.92 ct Black Opal
18.5 x 13.3 mm
$ 207.60
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18.3ct Oval Cabochon Multicolor Opal Gem (ID: 467270)
18.33 ct Opal
20 x 16.9 mm
$ 737.97
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2.6ct Oval Cabochon Pink Opal Gem (ID: 491437)
2.63 ct Opal
14 x 9.7 mm
$ 5.86
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17.3ct Oval Cabochon Multicolor Opal Gem (ID: 462093)
17.26 ct Opal
19.3 x 14.8 mm
$ 694.89
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2.7ct Pear Cabochon Pink Opal Gem (ID: 491526)
2.65 ct Opal
13.7 x 8.8 mm
$ 5.91
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0.8ct Marquise Cabochon White Opal Gem (ID: 478794)
0.77 ct Opal
10 x 4.9 mm
$ 26.95
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Click for Product Video (462134)
15.7ct Oval Cabochon Multicolor Opal Gem (ID: 462134)
15.72 ct Opal
19.5 x 17.1 mm
$ 632.89
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1.9ct Oval Cabochon Pink Opal Gem (ID: 484836)
1.85 ct Opal
9 x 6.9 mm
$ 6.11
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4.7ct Round Cabochon Blue Opal Doublet Gem (ID: 391594)
4.68 ct (total 9.35ctw) Opal Doublet
15.2 mm
$ 207.10
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5.2ct Oval Cabochon Pink Opal Gem (ID: 483597)
5.20 ct (total 10.40ctw) Opal
14 x 10.1 mm
$ 34.63
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0.5ct Oval Cabochon Multicolor Chocolate Opal Gem (ID: 330691)
0.54 ct (total 2.71ctw) Chocolate Opal
7 x 5.1 mm
$ 81.30
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15.4ct Oval Cabochon Yellow Opal Gem (ID: 462135)
15.44 ct Opal
18.8 x 15.7 mm
$ 621.61
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0.6ct Oval Cabochon Multicolor Chocolate Opal Gem (ID: 330639)
0.64 ct (total 2.56ctw) Chocolate Opal
7.1 x 5.1 mm
$ 76.80
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1.9ct Oval Cabochon Pink Opal Gem (ID: 484786)
1.86 ct Opal
9.2 x 7.1 mm
$ 6.14
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2 pcs
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0.7ct Oval Cabochon Multicolor Black Opal Gem (ID: 500238)
0.73 ct (total 1.46ctw) Black Opal
8 x 6 mm
$ 43.80
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4 pcs
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0.6ct Oval Cabochon Multicolor Chocolate Opal Gem (ID: 330688)
0.63 ct (total 2.50ctw) Chocolate Opal
7 x 5.1 mm
$ 75.00
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0.6ct Oval Cabochon Multicolor Black Opal Gem (ID: 500357)
0.61 ct Black Opal
7.7 x 5.8 mm
$ 18.30
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15.4ct Pear Cabochon Multicolor Opal Gem (ID: 462133)
15.39 ct Opal
22.8 x 17.9 mm
$ 619.60
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4 pcs
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0.8ct Oval Cabochon Multicolor Chocolate Opal Gem (ID: 330325)
0.75 ct (total 3.00ctw) Chocolate Opal
7.9 x 6.1 mm
$ 90.00
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1ct Oval Cabochon Multicolor Black Opal Gem (ID: 473366)
0.96 ct (total 1.91ctw) Black Opal
8.9 x 7.1 mm
$ 39.98
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4 pcs
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0.6ct Oval Cabochon Multicolor Chocolate Opal Gem (ID: 330630)
0.60 ct (total 2.39ctw) Chocolate Opal
7.1 x 5.1 mm
$ 71.70
Item in Stock
Opal Cabochons
More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied a folklore. Opals are also the most delicate gems commonly worn. They require special care to ensure their health and longevity.

Opal's fire was long thought to be the result of iridescence. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction.

Opal is relatively soft, with a rating of 5.5-6.5 on the Mohs scale. Despite its frequent use in rings, opal is a poor choice for a ring stone; it is much better suited to earrings, pins, and pendants.

Major suppliers include Australia, Brazil, Mexico, and the US. Values are normally determined by the presence and nature of color flashes.
Certified Customer Reviews
Overall Rating -> 10 star ratings
Easy to see the gemstones you are buying, easy to see prices and shipping.
Posted By Amy in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have been using GemSelect for at lest five years and I have no complaints!
Posted By in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
This site always has beautiful stones to choose from and you will get the actual gem that is pictured. The shipping is fast and reasonably priced.
Posted By CAC in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have not gotten my gems, but when i do i will be very happy, yet i did not like you had to pay $15 extra for faster shipping
Posted By Jack in October, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I love GemSelect, personally. I browse their site almost daily to see all the new stones available. Their selection is pretty amazing. The quality isn't always the highest and the cut of the stones isn't always perfect. But for the price, and if you look hard enough, you can find a real gem, so to speak.
Posted By Patrick in September, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I would recommend to a friend because of the quality of the products purchased. The gemstone quality is very high and the gems purchased are beautiful. Any friends interested in having custom jewelry made would definitely be recommended to the site. Also, every shipment is handled with care and I am very pleased with that.
Posted By Isaiah in September, 2018
Source: Bizrate
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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

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