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Buy Round Opal Gems

(167)
Gem Type Weight Size Clarity Price Origin
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Multicolor Opal Gem - 0.7ct Round Cabochon (ID: 477432)

Round Multicolor Opal

0.67 ct (total 2.69ctw)
6.1 mm
$ 57.32
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4 pcs
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Multicolor Opal Gem - 0.6ct Round Cabochon (ID: 477453)

Round Multicolor Opal

0.59 ct (total 2.35ctw)
6 mm
$ 50.08
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4 pcs
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Multicolor Opal Gem - 1.3ct Round Cabochon (ID: 466427)

Round Multicolor Opal

1.27 ct (total 5.09ctw)
7.9 mm
$ 142.52
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1 pc
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Multicolor Opal Gem - 1ct Round Cabochon (ID: 538261)

Round Multicolor Opal

1ct
7 mm
$ 21.74
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1 pc
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Multicolor Opal Gem - 0.7ct Round Cabochon (ID: 537804)

Round Multicolor Opal

0.7ct
7.2 mm
$ 16.58
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4 pcs
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Multicolor Opal Gem - 0.5ct Round Cabochon (ID: 477533)

Round Multicolor Opal

0.45 ct (total 1.80ctw)
5.9 mm
$ 38.36
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4 pcs
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Multicolor Opal Gem - 0.4ct Round Cabochon (ID: 477545)

Round Multicolor Opal

0.36 ct (total 1.45ctw)
5.1 mm
$ 30.90
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4 pcs
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Multicolor Opal Gem - 0.5ct Round Cabochon (ID: 478463)

Round Multicolor Opal

0.49 ct (total 1.95ctw)
5.8 mm
$ 68.25
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Multicolor Opal Gem - 1ct Round Cabochon (ID: 537740)

Round Multicolor Opal

1ct
6.9 mm
$ 22.63
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Multicolor Opal Gem - 1.2ct Round Cabochon (ID: 537516)

Round Multicolor Opal

1.2ct
7.1 mm
$ 27.79
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5 pcs
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Multicolor Black Opal Gem - 1ct Round Cabochon (ID: 473748)

Round Multicolor Black Opal

1.02 ct (total 5.09ctw)
7.1 mm
$ 106.53
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Multicolor Opal Gem - 0.6ct Round Cabochon (ID: 614381)

Round Multicolor Opal

0.6ct
5.9 mm
$ 16.52
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1 pc
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Multicolor Opal Gem - 1.2ct Round Cabochon (ID: 602127)

Round Multicolor Opal

1.2ct
7.1 mm
$ 26.44
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2 pcs
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Multicolor Opal Gem - 0.7ct Round Cabochon (ID: 477289)

Round Multicolor Opal

0.71 ct (total 1.41ctw)
6.3 mm
$ 30.05
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1 pc
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Multicolor Opal Gem - 0.9ct Round Cabochon (ID: 553546)

Round Multicolor Opal

0.9ct
6.7 mm
$ 19.40
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4 pcs
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Multicolor Opal Gem - 1.4ct Round Cabochon (ID: 466309)

Round Multicolor Opal

1.44 ct (total 5.75ctw)
8.2 mm
$ 153.72
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1 pc
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Multicolor Opal Gem - 0.9ct Round Cabochon (ID: 538260)

Round Multicolor Opal

0.9ct
7.1 mm
$ 20.39
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2 pcs
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Multicolor Opal Gem - 1.1ct Round Cabochon (ID: 537506)

Round Multicolor Opal

1.08 ct (total 2.15ctw)
7.2 mm
$ 48.18
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Multicolor Blue Opal Doublet Gem - 1.8ct Round Cabochon (ID: 505383)

Round Multicolor Opal Doublet

1.8ct
10 mm
$ 46.94
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4 pcs
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Multicolor Opal Gem - 0.8ct Round Cabochon (ID: 477457)

Round Multicolor Opal

0.79 ct (total 3.15ctw)
6.2 mm
$ 67.13
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Intense Orange Opal Gem - 1.5ct Round Cabochon (ID: 479115)

Round Orange Opal

1.5ct
8.2 mm
$ 40.62
Item in Stock
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About Round Opal Gems

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.

Round opal gemstones are available in singles, matched pairs and gem lots. Round opal gems fit various jewelry designs, whether they are used as center stones or accent stones. Choose from various round opal stones in calibrated sizes, including black opal, boulder opal, chocolate opal and opal doublets. Use the search filters at the top of the page to find the perfect round opal gems by size, carat weight, price or origin. The tick boxes will direct you to singles, pairs, lots, faceted gems or cabs.
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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