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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (57): Boulder Opal Clear All
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22.7ct Fancy Cabochon Multicolor Boulder Opal Gem (ID: 420682)
22.65 ct Boulder Opal
29.3 x 12.9 mm
$ 135.90
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21.6ct Trillion Cabochon Multicolor Boulder Opal Gem (ID: 321846)
21.64 ct Boulder Opal
21.2 x 20.6 mm
$ 151.48
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17.3ct Pear Cabochon Multicolor Boulder Opal Gem (ID: 302899)
17.27 ct Boulder Opal
23.5 x 13.5 mm
$ 120.89
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22.5ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 321845)
22.54 ct Boulder Opal
24.8 x 20 mm
$ 157.78
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21.3ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 321921)
21.32 ct Boulder Opal
27.3 x 13.1 mm
$ 149.24
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22.7ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 321842)
22.67 ct Boulder Opal
21.8 x 16.5 mm
$ 158.69
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22.2ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 302926)
22.16 ct Boulder Opal
22.7 x 18.1 mm
$ 155.12
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13.5ct Fancy Cabochon Multicolor Boulder Opal Gem (ID: 365223)
13.52 ct Boulder Opal
26.5 x 11.8 mm
$ 94.64
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23.5ct Round Cabochon Multicolor Boulder Opal Gem (ID: 302915)
23.48 ct Boulder Opal
21.3 mm
$ 164.36
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20.9ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 300454)
20.92 ct Boulder Opal
25.5 x 14.9 mm
$ 146.44
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26.2ct Pear Cabochon Multicolor Boulder Opal Gem (ID: 321839)
26.23 ct Boulder Opal
23.2 x 17 mm
$ 183.61
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15.1ct Round Cabochon Multicolor Boulder Opal Gem (ID: 365231)
15.09 ct Boulder Opal
16.4 mm
$ 105.63
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15.6ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 420671)
15.56 ct Boulder Opal
19.3 x 14.3 mm
$ 93.36
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28ct Pear Cabochon Multicolor Boulder Opal Gem (ID: 321922)
28.03 ct Boulder Opal
27.2 x 19.6 mm
$ 196.21
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15.5ct Fancy Cabochon Multicolor Boulder Opal Gem (ID: 420674)
15.53 ct Boulder Opal
18.3 x 13.8 mm
$ 93.18
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17.3ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 302921)
17.33 ct Boulder Opal
28.8 x 14.7 mm
$ 121.31
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13.2ct Fancy Cabochon Multicolor Boulder Opal Gem (ID: 365224)
13.21 ct Boulder Opal
14.4 x 14.1 mm
$ 92.47
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28.6ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 300453)
28.58 ct Boulder Opal
23.1 x 18.5 mm
$ 200.06
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17.6ct Fancy Cabochon Multicolor Boulder Opal Gem (ID: 365230)
17.55 ct Boulder Opal
19.4 x 13.3 mm
$ 122.85
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13.1ct Oval Cabochon Multicolor Boulder Opal Gem (ID: 248000)
13.14 ct Boulder Opal
19.5 x 13.5 mm
$ 91.98
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33.9ct Trillion Cabochon Multicolor Boulder Opal Gem (ID: 371701)
33.93 ct Boulder Opal
26.7 x 21.3 mm
$ 204.06
Item in Stock
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Boulder Opal

About Boulder Opal

Boulder Opal originates in Australia with many other Opals and is the second rarest type of Opal produced. Boulder Opal is minded at a much lower percentage than the percentage of Black Opal by a 6% variance. This stone is a naturally occurring Matrix that embeds itself in large boulders of ironstone. The iron matrix enhances the Boulder Opal making it more durable and the intensity of its color.

How Can I Buy Boulder Opal from GemSelect?

GemSelect’s Boulder Opal is sold only as unique stones because of its rarity. Shopping for this particular stone is quite easy and should be done by browsing for the gemstone you like the most. Some genuinely stunning pieces are available with fantastic color effects.

What colors does the 'Boulder Opal' Display?

Generally speaking, Boulder Opal displays a darker body tone. Some of the stones, however, display colors on the lighter end of the brown spectrum even towards cream types of color. The play-of-color Boulder Opal displays can be extraordinary with colors that move in rainbow-like effects as the viewer peers at the stone. GemSelect’s vast selection of natural Australian untreated Boulder Opal will inspire your creativity and your imagination.

Who should wear Boulder Opal?

As with all Opal, this stone should hold a unique value to those who are born in October and those who are celebrating 14 years of marriage. Yes, it’s true; Opal is the accepted stone for your 14th Anniversary. Here at GemSelect we also recommend this stone for men to wear as its quite handsome. Lastly, if you're anyone who has an exquisite taste for jewelry you can and should be wearing Boulder Opal.

What Types of Jewelry Designs are good for Boulder Opal?

Boulder Opal is generally bigger than other types of Opal, so we recommend them for use as Pendants and in Cabochon rings. It is also a rare stone so it’s available only as unique stone not as pairs or lots which will affect the ways it appears in finished jewelry. We suggest using it in unique asymmetrical designs to highlight the stones beauty.

Certified Customer Reviews
Overall Rating -> 10 star ratings
Colors and qualities of gems are very well represented online. Easy to use website. Great selections!
Posted By in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
This was my second purchase from GemSelect and definitely won’t be my last! They have a very wide variety of gems and you can always find what you are looking for with ease and the prices are very good.
Posted By Jill in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Loved the wide selection of product
Posted By Miki in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
finally bought the last rock to complete my ring idea; needed another white one after giving the big diamond to my daughter. a diamond that size is out of my retired-school-teacher budget, so i bought a white zircon. went back to the same place that i got my loose sapphire-- great selection, good prices, good delivery!
Posted By Ptcmom in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I'm always real pleased with this website, I don't think there is much you could do to make it any better. I wish the shipping charges were lower, but it is understandable.
Posted By Spinch13 in November, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
This is a site that sources valuable and genuine stones forms around the world, with and honest and descriptive sections, as well as specs, and the option to have the gemstone collection one might purchased—certified! Price ranges vary, but are always affordable and always worth it, whether it’s a gift, or for a personal business.
Posted By Bradley in November, 2018
Source: Bizrate
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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

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

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