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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (61): Boulder Opal Clear All
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thumb image of 21ct Oval Cabochon Multicolor Boulder Opal (ID: 321920)
21.04 ct Boulder Opal
27.9 x 12.8 mm
$ 147.28
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thumb image of 22.7ct Fancy Cabochon Multicolor Boulder Opal (ID: 420682)
22.65 ct Boulder Opal
29.3 x 12.9 mm
$ 135.90
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thumb image of 21.3ct Oval Cabochon Multicolor Boulder Opal (ID: 321921)
21.32 ct Boulder Opal
27.3 x 13.1 mm
$ 149.24
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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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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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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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thumb image of 21.6ct Trillion Cabochon Multicolor Boulder Opal (ID: 321846)
21.64 ct Boulder Opal
21.2 x 20.6 mm
$ 151.48
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thumb image of 15.8ct Round Cabochon Multicolor Boulder Opal (ID: 336576)
15.80 ct Boulder Opal
18.6 mm
$ 110.60
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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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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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thumb image of 22.7ct Oval Cabochon Multicolor Boulder Opal (ID: 321842)
22.67 ct Boulder Opal
21.8 x 16.5 mm
$ 158.69
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thumb image of 13.4ct Pear Cabochon Multicolor Boulder Opal (ID: 321836)
13.35 ct Boulder Opal
21.4 x 15 mm
$ 93.45
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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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thumb image of 23.5ct Round Cabochon Multicolor Boulder Opal (ID: 302915)
23.48 ct Boulder Opal
21.3 mm
$ 164.36
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thumb image of 20.7ct Pear Cabochon Multicolor Boulder Opal (ID: 300456)
20.74 ct Boulder Opal
23.1 x 15 mm
$ 145.18
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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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thumb image of 13.2ct Fancy Cabochon Multicolor Boulder Opal (ID: 365224)
13.21 ct Boulder Opal
14.4 x 14.1 mm
$ 92.47
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thumb image of 21.5ct Pear Cabochon Multicolor Boulder Opal (ID: 321926)
21.46 ct Boulder Opal
28.9 x 18.8 mm
$ 150.22
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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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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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thumb image of 12.9ct Oval Cabochon Multicolor Boulder Opal (ID: 420744)
12.87 ct Boulder Opal
21 x 10 mm
$ 77.22
Item in Stock
1 2 3
Boulder Opal

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.

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when I need a colored stone I check gem select. a trusted supplier for at least 10 years for me. many of the online sites have gone black but gemselect continues to satisfy me. oh sure there are many windowed and poorly cut stones here so paying some attention is critical. remember these are not custom cut stones but rather cut by old methods and the aim is to keep weight up at the expense of optical perfection. remember that colored stones are about color as the first consideration. I just wish gemselect offered rough for those who want to cut it.
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