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You Selected (94): Boulder Opal Boulder Opal Clear All
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ID: 2480001 pcs
thumb image of 13.1ct Oval Cabochon Multicolor Boulder Opal (ID: 248000)
13.14 ct Boulder Opal
19.5 x 13.5 mm
$ 91.98
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ID: 3004531 pcs
thumb image of 28.6ct Oval Cabochon Multicolor Boulder Opal (ID: 300453)
28.58 ct Boulder Opal
23.1 x 18.5 mm
$ 200.06
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ID: 4206801 pcs
thumb image of 12.8ct Oval Cabochon Multicolor Boulder Opal (ID: 420680)
12.77 ct Boulder Opal
18.9 x 12.9 mm
$ 76.62
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ID: 3652491 pcs
thumb image of 10.4ct Fancy Cabochon Multicolor Boulder Opal (ID: 365249)
10.40 ct Boulder Opal
19.5 x 12.6 mm
$ 72.80
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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: 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: 3029171 pcs
thumb image of 5.7ct Pear Cabochon Multicolor Boulder Opal (ID: 302917)
5.66 ct Boulder Opal
14 x 9.9 mm
$ 39.62
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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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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: 3029001 pcs
thumb image of 23.3ct Oval Cabochon Multicolor Boulder Opal (ID: 302900)
23.34 ct Boulder Opal
20.8 x 14 mm
$ 163.38
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ID: 4495971 pcs
thumb image of 21.2ct Pear Cabochon Multicolor Boulder Opal (ID: 449597)
21.20 ct Boulder Opal
25 x 18.5 mm
$ 148.40
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ID: 3219281 pcs
thumb image of 45.2ct Pear Cabochon Multicolor Boulder Opal (ID: 321928)
45.15 ct Boulder Opal
33.4 x 19.8 mm
$ 316.05
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ID: 3028991 pcs
thumb image of 17.3ct Pear Cabochon Multicolor Boulder Opal (ID: 302899)
17.27 ct Boulder Opal
23.5 x 13.5 mm
$ 120.89
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ID: 3218351 pcs
thumb image of 8.6ct Pear Cabochon Multicolor Boulder Opal (ID: 321835)
8.60 ct Boulder Opal
18.9 x 12.5 mm
$ 60.20
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ID: 3221161 pcs
thumb image of 36.7ct Trillion Cabochon Multicolor Boulder Opal (ID: 322116)
36.68 ct Boulder Opal
21.8 x 21.1 mm
$ 256.76
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ID: 3107621 pcs
thumb image of 6.1ct Oval Cabochon Multicolor Boulder Opal (ID: 310762)
6.07 ct Boulder Opal
19.1 x 7.7 mm
$ 42.49
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ID: 4207791 pcs
thumb image of 14.7ct Fancy Cabochon Multicolor Boulder Opal (ID: 420779)
14.72 ct Boulder Opal
22.9 x 11.6 mm
$ 88.32
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ID: 3652421 pcs
thumb image of 9.9ct Fancy Cabochon Multicolor Boulder Opal (ID: 365242)
9.92 ct Boulder Opal
17 x 11.4 mm
$ 69.44
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ID: 3652301 pcs
thumb image of 17.6ct Fancy Cabochon Multicolor Boulder Opal (ID: 365230)
17.55 ct Boulder Opal
19.4 x 13.3 mm
$ 122.85
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ID: 4206281 pcs
thumb image of 9.1ct Oval Cabochon Multicolor Boulder Opal (ID: 420628)
9.05 ct Boulder Opal
16 x 10.9 mm
$ 54.30
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ID: 3656271 pcs
thumb image of 6.8ct Fancy Cabochon Multicolor Boulder Opal (ID: 365627)
6.83 ct Boulder Opal
13.3 x 10.9 mm
$ 47.81
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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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