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You Selected (103): Boulder Opal Clear All
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ID: 3029151 pcs
23.48ct Boulder Opal
21.30mm x 6.95mm
USD 164.36
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ID: 4206821 pcs
22.65ct Boulder Opal
29.31mm x 12.91mm x 7.58mm
USD 135.90
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ID: 3656211 pcs
6.99ct Boulder Opal
14.34mm x 10.97mm x 5.35mm
USD 48.93
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ID: 4207791 pcs
14.72ct Boulder Opal
22.91mm x 11.58mm x 6.23mm
USD 88.32
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ID: 3219221 pcs
28.03ct Boulder Opal
27.22mm x 19.56mm x 6.87mm
USD 196.21
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ID: 3107381 pcs
6.43ct Boulder Opal
15.03mm x 12.10mm x 5.62mm
USD 45.01
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ID: 3711021 pcs
4.00ct Boulder Opal
15.84mm x 7.56mm x 5.53mm
USD 29.16
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ID: 3219211 pcs
21.32ct Boulder Opal
27.33mm x 13.10mm x 5.82mm
USD 149.24
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ID: 3652521 pcs
10.04ct Boulder Opal
15.22mm x 12.06mm x 6.30mm
USD 70.28
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ID: 4207831 pcs
16.69ct Boulder Opal
24.73mm x 12.40mm x 6.10mm
USD 100.14
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ID: 2480001 pcs
13.14ct Boulder Opal
19.47mm x 13.51mm x 5.47mm
USD 91.98
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ID: 3717011 pcs
33.93ct Boulder Opal
26.72mm x 21.28mm x 8.42mm
USD 204.06
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ID: 4206341 pcs
9.04ct Boulder Opal
29.06mm x 8.23mm x 5.10mm
USD 54.24
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ID: 4206321 pcs
8.77ct Boulder Opal
14.13mm x 11.34mm x 6.69mm
USD 52.62
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ID: 3030251 pcs
18.34ct Boulder Opal
21.12mm x 14.70mm x 7.03mm
USD 128.38
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ID: 3001271 pcs
10.90ct Boulder Opal
15.95mm x 13.77mm x 6.57mm
USD 294.30
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ID: 4207341 pcs
7.53ct Boulder Opal
14.15mm x 11.43mm x 5.41mm
USD 45.18
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ID: 4207531 pcs
25.57ct Boulder Opal
24.83mm x 15.84mm x 7.78mm
USD 153.42
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ID: 3029191 pcs
7.81ct Boulder Opal
16.37mm x 10.48mm x 6.19mm
USD 54.67
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ID: 3108151 pcs
16.32ct Boulder Opal
18.73mm x 14.73mm x 7.11mm
USD 114.24
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ID: 4207281 pcs
3.64ct Boulder Opal
12.20mm x 7.37mm x 5.05mm
USD 21.84
Item in Stock
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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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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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