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You Selected (98): Boulder Opal Boulder Opal Clear All
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ID: 3004501 pcs
thumb image of 33.4ct Oval Cabochon Multicolor Boulder Opal (ID: 300450)
33.36 ct Boulder Opal
28.1 x 19 mm
$ 233.52
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ID: 4207441 pcs
thumb image of 12.9ct Oval Cabochon Multicolor Boulder Opal (ID: 420744)
12.87 ct Boulder Opal
21 x 10 mm
$ 77.22
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ID: 4495201 pcs
thumb image of 29.5ct Pear Cabochon Multicolor Boulder Opal (ID: 449520)
29.52 ct Boulder Opal
38.7 x 17.9 mm
$ 206.64
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ID: 3108161 pcs
thumb image of 9.5ct Oval Cabochon Multicolor Boulder Opal (ID: 310816)
9.49 ct Boulder Opal
16 x 10.3 mm
$ 66.43
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ID: 3001271 pcs
thumb image of 10.9ct Oval Cabochon Multicolor Boulder Opal (ID: 300127)
10.90 ct Boulder Opal
16 x 13.8 mm
$ 70.28
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ID: 3218451 pcs
thumb image of 22.5ct Oval Cabochon Multicolor Boulder Opal (ID: 321845)
22.54 ct Boulder Opal
24.8 x 20 mm
$ 157.78
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ID: 3029261 pcs
thumb image of 22.2ct Oval Cabochon Multicolor Boulder Opal (ID: 302926)
22.16 ct Boulder Opal
22.7 x 18.1 mm
$ 155.12
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ID: 3219251 pcs
thumb image of 32.4ct Pear Cabochon Multicolor Boulder Opal (ID: 321925)
32.44 ct Boulder Opal
28.4 x 23.2 mm
$ 227.08
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ID: 3695641 pcs
thumb image of 7.1ct Fancy Cabochon Multicolor Boulder Opal (ID: 369564)
7.09 ct Boulder Opal
13.9 x 11.9 mm
$ 49.63
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ID: 3029191 pcs
thumb image of 7.8ct Pear Cabochon Multicolor Boulder Opal (ID: 302919)
7.81 ct Boulder Opal
16.4 x 10.5 mm
$ 54.67
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ID: 4495281 pcs
thumb image of 7.7ct Pear Cabochon Multicolor Boulder Opal (ID: 449528)
7.69 ct Boulder Opal
20.1 x 13.3 mm
$ 53.83
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ID: 3652521 pcs
thumb image of 10ct Fancy Cabochon Multicolor Boulder Opal (ID: 365252)
10.04 ct Boulder Opal
15.2 x 12.1 mm
$ 70.28
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ID: 4496001 pcs
thumb image of 66.3ct Oval Cabochon Multicolor Boulder Opal (ID: 449600)
66.28 ct Boulder Opal
39.3 x 28.2 mm
$ 463.96
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ID: 4495981 pcs
thumb image of 12.4ct Cushion Cabochon Multicolor Boulder Opal (ID: 449598)
12.42 ct Boulder Opal
17.1 x 14.5 mm
$ 86.94
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ID: 4495951 pcs
thumb image of 9.6ct Fancy Cabochon Multicolor Boulder Opal (ID: 449595)
9.59 ct Boulder Opal
18.9 x 14 mm
$ 67.13
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ID: 4535281 pcs
thumb image of 6.9ct Oval Cabochon Multicolor Boulder Opal (ID: 453528)
6.86 ct Boulder Opal
15.5 x 9.9 mm
$ 143.44
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ID: 4207541 pcs
thumb image of 13.3ct Fancy Cabochon Multicolor Boulder Opal (ID: 420754)
13.34 ct Boulder Opal
20.3 x 11.9 mm
$ 80.04
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ID: 4207531 pcs
thumb image of 25.6ct Fancy Cabochon Multicolor Boulder Opal (ID: 420753)
25.57 ct Boulder Opal
24.8 x 15.8 mm
$ 153.42
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ID: 3693951 pcs
thumb image of 5ct Oval Cabochon Multicolor Boulder Opal (ID: 369395)
4.97 ct Boulder Opal
11 x 9.9 mm
$ 34.79
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ID: 3218391 pcs
thumb image of 26.2ct Pear Cabochon Multicolor Boulder Opal (ID: 321839)
26.23 ct Boulder Opal
23.2 x 17 mm
$ 183.61
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ID: 3107651 pcs
thumb image of 7.3ct Oval Cabochon Multicolor Boulder Opal (ID: 310765)
7.27 ct Boulder Opal
20 x 9.3 mm
$ 50.89
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Boulder Opal
Boulder Opal Gemstone InformationOpal Ring Information

Boulder opal is the second most prized form of opal, after black opal. The name derives from the fact that boulder opal is found embedded in ironstone boulders. The opal usually forms as thin veins within these boulders, and most stones are cut to include some of the host ironstone matrix. Boulder opal is sometimes referred to as opal in matrix for this reason. Boulder opal is especially attractive because, like the black opal, it has a dark body tone which adds vibrancy to the play of color. Boulder opal also has a higher density because of the ironstone content, and can be more durable as well.

Browse Similar or Related Gemstones:
All Opal Gemstones
Black Opal Gemstones
Opal Doublet Gemstones
Opal in Matrix Gemstones
Fire Opal Gemstones

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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

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

Note: 1ct = 0.2g

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