Jewelry 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 (98): Boulder Opal Boulder Opal Clear All
Sort By:
Compare
ID: 3652231 pcs
thumb image of 13.5ct Fancy Cabochon Multicolor Boulder Opal (ID: 365223)
13.52 ct Boulder Opal
26.5 x 11.8 mm
$ 94.64
Quantity
Item in Stock
Compare
ID: 3219271 pcs
thumb image of 31.2ct Pear Cabochon Multicolor Boulder Opal (ID: 321927)
31.20 ct Boulder Opal
29.5 x 20.6 mm
$ 218.40
Quantity
Item in Stock
Compare
ID: 3218361 pcs
thumb image of 13.4ct Pear Cabochon Multicolor Boulder Opal (ID: 321836)
13.35 ct Boulder Opal
21.4 x 15 mm
$ 93.45
Quantity
Item in Stock
Compare
ID: 3029191 pcs
thumb image of 7.8ct Pear Cabochon Multicolor Boulder Opal (ID: 302919)
7.81 ct Boulder Opal
16.4 x 10.5 mm
$ 54.67
Quantity
Item in Stock
Compare
ID: 4206821 pcs
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
Quantity
Item in Stock
Compare
ID: 3219221 pcs
thumb image of 28ct Pear Cabochon Multicolor Boulder Opal (ID: 321922)
28.03 ct Boulder Opal
27.2 x 19.6 mm
$ 196.21
Quantity
Item in Stock
Compare
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
Quantity
Item in Stock
Compare
ID: 3108161 pcs
thumb image of 9.5ct Oval Cabochon Multicolor Boulder Opal (ID: 310816)
9.49 ct Boulder Opal
16 x 10.3 mm
$ 66.43
Quantity
Item in Stock
Compare
ID: 4535311 pcs
thumb image of 12.1ct Round Cabochon Multicolor Boulder Opal (ID: 453531)
12.06 ct Boulder Opal
16.5 mm
$ 252.17
Quantity
Item in Stock
Compare
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
Quantity
Item in Stock
Compare
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
Quantity
Item in Stock
Compare
ID: 3219261 pcs
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
Quantity
Item in Stock
Compare
ID: 3652521 pcs
thumb image of 10ct Fancy Cabochon Multicolor Boulder Opal (ID: 365252)
10.04 ct Boulder Opal
15.2 x 12.1 mm
$ 70.28
Quantity
Item in Stock
Compare
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
Quantity
Item in Stock
1
2
3
4
5
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

English speaking customer support only

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

International:
+66-39303404

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