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You Selected (95): Boulder Opal Boulder Opal Clear All
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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: 3656211 pcs
thumb image of 7ct Fancy Cabochon Multicolor Boulder Opal (ID: 365621)
6.99 ct Boulder Opal
14.3 x 11 mm
$ 48.93
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ID: 4207311 pcs
thumb image of 7.3ct Oval Cabochon Multicolor Boulder Opal (ID: 420731)
7.28 ct Boulder Opal
12.4 x 10.2 mm
$ 43.68
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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: 3139231 pcs
thumb image of 22.5ct Pear Cabochon Multicolor Boulder Opal (ID: 313923)
22.51 ct Boulder Opal
26.5 x 19.6 mm
$ 157.57
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ID: 4207781 pcs
thumb image of 11.6ct Fancy Cabochon Multicolor Boulder Opal (ID: 420778)
11.56 ct Boulder Opal
16.4 x 12.6 mm
$ 69.36
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ID: 4495251 pcs
thumb image of 15.9ct Oval Cabochon Multicolor Boulder Opal (ID: 449525)
15.88 ct Boulder Opal
22.8 x 15.2 mm
$ 111.16
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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: 3660771 pcs
thumb image of 86.1ct Trillion Cabochon Multicolor Boulder Opal (ID: 366077)
86.05 ct Boulder Opal
43 x 37.4 mm
$ 988.50
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ID: 4207821 pcs
thumb image of 12.4ct Fancy Cabochon Multicolor Boulder Opal (ID: 420782)
12.42 ct Boulder Opal
18.1 x 13.1 mm
$ 74.52
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ID: 3220371 pcs
thumb image of 42.7ct Oval Cabochon Multicolor Boulder Opal (ID: 322037)
42.73 ct Boulder Opal
27.5 x 20.8 mm
$ 299.11
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ID: 3653121 pcs
thumb image of 5ct Oval Cabochon Multicolor Boulder Opal (ID: 365312)
4.95 ct Boulder Opal
11.3 x 9.2 mm
$ 34.65
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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: 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: 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: 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: 3711021 pcs
thumb image of 4ct Pear Cabochon Multicolor Boulder Opal (ID: 371102)
4.00 ct Boulder Opal
15.8 x 7.6 mm
$ 29.16
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ID: 4089501 pcs
thumb image of 8.9ct Oval Cabochon Multicolor Boulder Opal (ID: 408950)
8.87 ct Boulder Opal
13.4 x 11.1 mm
$ 62.09
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ID: 3029211 pcs
thumb image of 17.3ct Oval Cabochon Multicolor Boulder Opal (ID: 302921)
17.33 ct Boulder Opal
28.8 x 14.7 mm
$ 121.31
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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: 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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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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