New Arrivals Pairs Lots Contact
  : Boulder Opal
Shop By

Single

Pairs

Lots

Faceted

Cab

Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (111): Boulder Opal Clear All
Sort By:
Compare
ID: 4206321 pcs
8.77ct Boulder Opal
14.13mm x 11.34mm x 6.69mm
USD 52.62
Item in Stock
Compare
ID: 4101191 pcs
34.16ct Boulder Opal
23.40mm x 19.60mm x 9.71mm
USD 239.47
Item in Stock
Compare
ID: 3227901 pcs
13.97ct Boulder Opal
40.10mm x 13.00mm x 3.23mm
USD 377.19
Item in Stock
Compare
ID: 3107631 pcs
7.78ct Boulder Opal
16.59mm x 10.92mm x 5.26mm
USD 210.06
Item in Stock
Compare
ID: 2480001 pcs
13.14ct Boulder Opal
19.47mm x 13.51mm x 5.47mm
USD 91.98
Item in Stock
Compare
ID: 3656251 pcs
6.14ct Boulder Opal
12.61mm x 10.04mm x 5.87mm
USD 42.98
Item in Stock
Compare
ID: 3218371 pcs
16.89ct Boulder Opal
20.66mm x 14.77mm x 7.56mm
USD 456.03
Item in Stock
Compare
ID: 4207201 pcs
3.96ct Boulder Opal
10.80mm x 9.90mm x 4.33mm
USD 23.76
Item in Stock
Compare
ID: 3218381 pcs
20.90ct Boulder Opal
23.48mm x 19.55mm x 6.06mm
USD 146.30
Item in Stock
Compare
ID: 3652231 pcs
13.52ct Boulder Opal
26.49mm x 11.81mm x 6.01mm
USD 94.64
Item in Stock
Compare
ID: 3029191 pcs
7.81ct Boulder Opal
16.37mm x 10.48mm x 6.19mm
USD 54.67
Item in Stock
Compare
ID: 4207491 pcs
10.89ct Boulder Opal
16.93mm x 12.57mm x 5.73mm
USD 65.34
Item in Stock
Compare
ID: 3107461 pcs
10.52ct Boulder Opal
21.67mm x 12.99mm x 5.39mm
USD 73.64
Item in Stock
Compare
ID: 4207831 pcs
16.69ct Boulder Opal
24.73mm x 12.40mm x 6.10mm
USD 100.14
Item in Stock
Compare
ID: 3652491 pcs
10.40ct Boulder Opal
19.49mm x 12.62mm x 5.66mm
USD 72.80
Item in Stock
Compare
ID: 4206731 pcs
14.29ct Boulder Opal
23.08mm x 12.61mm x 6.01mm
USD 85.74
Item in Stock
Compare
ID: 4207451 pcs
13.53ct Boulder Opal
19.10mm x 13.72mm x 6.72mm
USD 81.18
Item in Stock
Compare
ID: 3029151 pcs
23.48ct Boulder Opal
21.30mm x 6.95mm
USD 164.36
Item in Stock
Compare
ID: 4207821 pcs
12.42ct Boulder Opal
18.11mm x 13.08mm x 6.36mm
USD 74.52
Item in Stock
Compare
ID: 3108151 pcs
16.32ct Boulder Opal
18.73mm x 14.73mm x 7.11mm
USD 114.24
Item in Stock
Compare
ID: 3653121 pcs
4.95ct Boulder Opal
11.31mm x 9.20mm x 5.63mm
USD 34.65
Item in Stock
1
2
3
4
5
6
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.
English speaking customer support only

Toll Free - USA & Canada only:
1-800-464-1640

International:
+66-39340503

Reorder Items

Save Money
No shipping Fees for Additional Items!
$6.99 Worldwide Shipping

GemSelect Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
X Close Window
Colored Gemstones
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

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

Note: 1ct = 0.2g

Size Comparison Chart