search
  • Sign In
    Sign Up
  • English speaking customer support only

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

    International:
    +66-39303404

  • Change Language
  • USD

Buy Boulder Opal Gems

(108)
Gem Type Weight Size Clarity Price Origin
More
Single
Pairs
Lots
Faceted
Cabochons
Sort By:
Clear All
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 9.9ct Pear Cabochon (ID: 523715)

Pear Multicolor Boulder Opal

9.9ct
20.3 x 12.8 mm
$ 49.65
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (521763)
Multicolor Boulder Opal Gem - 32.3ct Trillion Cabochon (ID: 521763)

Trillion Multicolor Boulder Opal

32.3ct
28.3 x 25.7 mm
$ 161.50
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 20.7ct Pear Cabochon (ID: 300456)

Pear Multicolor Boulder Opal

20.7ct
23.1 x 15 mm
$ 145.18
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (302922)
Multicolor Boulder Opal Gem - 32.4ct Oval Cabochon (ID: 302922)

Oval Multicolor Boulder Opal

32.4ct
33.7 x 15 mm
$ 226.73
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (524127)
Multicolor Boulder Opal Gem - 33.7ct Fancy Cabochon (ID: 524127)

Fancy Multicolor Boulder Opal

33.7ct
35.2 x 23.5 mm
$ 168.65
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (575177)
Multicolor Boulder Opal Gem - 29.7ct Pear Cabochon (ID: 575177)

Pear Multicolor Boulder Opal

29.7ct
33.9 x 18.7 mm
$ 88.95
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 21.2ct Pear Cabochon (ID: 449597)

Pear Multicolor Boulder Opal

21.2ct
25 x 18.5 mm
$ 148.40
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (321921)
Multicolor Boulder Opal Gem - 21.3ct Oval Cabochon (ID: 321921)

Oval Multicolor Boulder Opal

21.3ct
27.3 x 13.1 mm
$ 149.24
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 13.5ct Cushion Cabochon (ID: 522130)

Cushion Multicolor Boulder Opal

13.5ct
14.7 x 12.1 mm
$ 67.30
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (248000)
Multicolor Boulder Opal Gem - 13.1ct Oval Cabochon (ID: 248000)

Oval Multicolor Boulder Opal

13.1ct
19.5 x 13.5 mm
$ 91.98
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (321927)
Multicolor Boulder Opal Gem - 31.2ct Pear Cabochon (ID: 321927)

Pear Multicolor Boulder Opal

31.2ct
29.5 x 20.6 mm
$ 218.40
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (469563)
Multicolor Boulder Opal Gem - 40ct Drilled Sphere (ID: 469563)

Sphere / Ball Multicolor Boulder Opal

40ct
17.6 mm
$ 199.75
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (321930)
Multicolor Boulder Opal Gem - 36.1ct Oval Cabochon (ID: 321930)

Oval Multicolor Boulder Opal

36.1ct
29.8 x 18.5 mm
$ 252.63
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 11.6ct Fancy Cabochon (ID: 575199)

Fancy Multicolor Boulder Opal

11.6ct
18.8 x 12.3 mm
$ 34.83
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 11ct Pear Cabochon (ID: 521758)

Pear Multicolor Boulder Opal

11ct
29.4 x 13.2 mm
$ 55.05
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (300450)
Multicolor Boulder Opal Gem - 33.4ct Oval Cabochon (ID: 300450)

Oval Multicolor Boulder Opal

33.4ct
28.1 x 19 mm
$ 233.52
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (523672)
Multicolor Boulder Opal Gem - 30.5ct Pear Cabochon (ID: 523672)

Pear Multicolor Boulder Opal

30.5ct
29.4 x 21.8 mm
$ 152.50
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 14ct Trillion Cabochon (ID: 522953)

Trillion Multicolor Boulder Opal

14ct
20.4 x 12.9 mm
$ 69.85
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 7.4ct Fancy Cabochon (ID: 575201)

Fancy Multicolor Boulder Opal

7.4ct
17.1 x 12.5 mm
$ 22.29
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Click for Product Video (321922)
Multicolor Boulder Opal Gem - 28ct Pear Cabochon (ID: 321922)

Pear Multicolor Boulder Opal

28ct
27.2 x 19.6 mm
$ 196.21
Item in Stock
Click for Details
Compare
1 pc
Add to Cart
Buy Now
Multicolor Boulder Opal Gem - 18.3ct Marquise Cabochon (ID: 522132)

Marquise Multicolor Boulder Opal

18.3ct
36.2 x 14.4 mm
$ 91.40
Item in Stock
1 2 3 4 5

About 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 -> 9 star ratings
Love the selection of gems, prices are fair
Posted By Cj in February, 2021
Source: Bizrate
Overall Rating -> 9 star ratings
Gem select has a great selection of Gems, very defined pictures of item and easy process to filter down selection including, gem, color, type, size and weight.
Posted By KingFarm in February, 2021
Source: Bizrate
Overall Rating -> 10 star ratings
A beautiful displayed picture of gemsLike being a kid in a candy store
Posted By Diamond lil in February, 2021
Source: Bizrate
Overall Rating -> 10 star ratings
I had a limited budget and wanted a star ruby. GemSelect offered small, but pretty stones at a very reasonable price. I've always been satisfied with my GemSelect purchases, although there are also eBay vendors I use for less expensive gems. Their selection of more expensive stones, like rubies, is very limited, however.
Posted By Dr S in February, 2021
Source: Bizrate
Overall Rating -> 8 star ratings
I decided recently to start a gemstone collection! I searched online for a reputable gem merchant and found gem select! Their selection is gorgeous and I’m excited to receive my first package! Checkout was a breeze!
Posted By Chris in February, 2021
Source: Bizrate
Overall Rating -> 9 star ratings
I WAS ABLE TO FIND THE GEM I NEEDED TO MOUNT ON A SPECIFIC RING. THANK YOU
Posted By E's! Review in February, 2021
Source: Bizrate
Sign up for our Newsletter

Article Categories

Total Number of Articles: 1452

More Shapes
  • Asscher Cut
  • Baguette / Scissor Cut
  • Baguette Cabochon
  • Baguette Checkerboard
  • Baguette Crystal Cluster
  • Baguette Facet
  • Baguette Rose-Cut
  • Baguette Step Cut
  • Baguette Sugarloaf Cabochon
  • Ball Facet
  • Baroque
  • Barrel
  • Barrel / Checkerboard
  • Barrel / Full-Round
  • Barrel / Scissor Cut
  • Barrel Cabochon
  • Barrel Rose Cut
  • Bear Carving with Hole
  • Bird Carving
  • Briolette
  • Briolette with Hole
  • Bullet Shape Checkerboard
  • Carved
  • Carved Bird
  • Carved Cameo
  • Carved Cushion
  • Carved Elephant
  • Carved Fancy
  • Carved Fish
  • Carved Fish with Hole
  • Carved Flower
  • Carved Frog
  • Carved Fruit
  • Carved Half Heart
  • Carved Heart
  • Carved Heart Cabochon
  • Carved Leaf
  • Carved Marquise
  • Carved Marquise Cabochon
  • Carved Octagon
  • Carved Oval
  • Carved Oval Cabochon
  • Carved Pear
  • Carved Pear Cabochon
  • Carved Rhomb
  • Carved Rose
  • Carved Rose with Half Drilled Hole
  • Carved Round
  • Carved Round Bar
  • Carved Round Cabochon
  • Carved Sheep
  • Carved Shell
  • Carved Square
  • Carved Teardrop
  • Carved Trillion
  • Carved Turtle
  • Cushion Buff-Top
  • Cushion Cabochon
  • Cushion Carved Medusa Cameo
  • Cushion Checkerboard
  • Cushion Checkerboard (double sided)
  • Cushion Concave Cut
  • Cushion Concave Fantasy Cut
  • Cushion Crystal Cluster
  • Cushion Mixed Cut
  • Cushion Rose-Cut
  • Cushion Shape Sugarloaf Cabochon
  • Cushion Sugarloaf Cabochon
  • Cushion-Cut
  • Diamond-Cut
  • Drilled Faceted Sphere
  • Drilled Sphere
  • Drilled Square Rondelle
  • Drilled Square Rondelle Slice
  • Fancy Bicone
  • Fancy Cabochon
  • Fancy Carved Cushion
  • Fancy Carved Oval
  • Fancy Carved Pear
  • Fancy Carved Round
  • Fancy Carved Trillion
  • Fancy Carving
  • Fancy Concave Cut
  • Fancy Crystal Cluster
  • Fancy Cut
  • Fancy Facet
  • Fancy Fantasy Carving
  • Fancy Slice
  • Fancy Square Checkerboard
  • Fancy-Cut
  • Fantasy Carved Flower
  • Fantasy Carved Flower Cut
  • Fantasy Carved Leaf
  • Flower Carving
  • Flower-Cut
  • Half Heart Cabochon
  • Half Heart Facet
  • Half Moon Cabochon
  • Half Moon Facet-Cut
  • Half Moon Faceted
  • Half-Drilled Briolette
  • Half-Drilled Heart Facet
  • Half-Drilled Sphere
  • Heart Buff-Top
  • Heart Cabochon
  • Heart Checkerboard (double sided)
  • Heart Concave Cut
  • Heart Facet
  • Heart Rose-Cut
  • Hexagon Cut
  • Marquise Cabochon
  • Marquise Checkerboard
  • Marquise Checkerboard (double sided)
  • Marquise Concave Cut
  • Marquise Facet
  • Marquise Mixed Cut
  • Marquise Slice
  • Marquise Sugarloaf Cabochon
  • Octagon / Scissor Cut
  • Octagon Buff-Top
  • Octagon Cabochon
  • Octagon Checkerboard
  • Octagon Concave Cut
  • Octagon Facet
  • Octagon Step Cut
  • Oval Bar Cut
  • Oval Buff-Top
  • Oval Cabochon
  • Oval Cabochon with Hole
  • Oval Carved Cameo
  • Oval Checkerboard
  • Oval Checkerboard (double sided)
  • Oval Concave Cut
  • Oval Crystal Cluster
  • Oval Diamond-Cut
  • Oval Facet
  • Oval Fancy Facet
  • Oval Fantasy Concave Cut
  • Oval Mixed Cut
  • Oval Portuguese-Cut
  • Oval Rose-Cut
  • Oval Slice
  • Pear Cabochon
  • Pear Checkerboard
  • Pear Checkerboard with Hole
  • Pear Concave Cut
  • Pear Concave Fantasy Cut
  • Pear Crystal Cluster
  • Pear Double-Sided Checkerboard
  • Pear Facet
  • Pear Shape Sugarloaf Cabochon
  • Pear Slice
  • Pencil
  • Pencil Cut
  • Princess-Cut
  • Rhomb Cabochon
  • Rhomb Checkerboard
  • Rhomb Checkerboard (Double-Sided)
  • Rhomb Facet
  • Rondelle
  • Round Buff-Top
  • Round Cabochon
  • Round Carved Cameo
  • Round Checkerboard
  • Round Checkerboard (double sided)
  • Round Concave Cut
  • Round Concave Fantasy Cut
  • Round Drilled Checkerboard (Double Sided)
  • Round Drilled Rondelle
  • Round Facet
  • Round Mixed-Cut
  • Round Petal Cut
  • Round Portuguese-Cut
  • Round Rose-Cut
  • Round Rose-Cut (double sided)
  • Round Slice
  • Shark Fin Cabochon
  • Shield Cabochon
  • Spherical
  • Square / Scissor Cut
  • Square Buff-Top
  • Square Cabochon
  • Square Checkerboard
  • Square Concave Cut
  • Square Facet
  • Square Mixed-Cut
  • Square Rose-Cut
  • Square Step-Cut
  • Square Sugarloaf Cabochon
  • Square with Hole
  • Star Facet
  • Tapered Baguette Cabochon
  • Teardrop Cabochon
  • Trapezoid
  • Trapezoid Cabochon
  • Triangle
  • Triangle Cabochon
  • Triangle Facet
  • Trillion Buff Top
  • Trillion Cabochon
  • Trillion Checkerboard
  • Trillion Concave Cut
  • Trillion Crystal Cluster
  • Trillion Facet
  • Trillion Rose-Cut
  • Trillion Shape Sugarloaf Cabochon
  • Undrilled Briolette Teardrop
Popular Gemstones
  • Sapphire
  • Emerald
  • Ruby
  • Aquamarine
  • Zircon
  • Opal
  • Topaz
  • Tourmaline
  • Garnet
  • Amethyst
  • Citrine
  • Tanzanite
All Gemstones (141)
A B C D E F G H I J K L M N O P Q R S T V Z
  • Actinolite Cat's Eye
  • Agate
  • Agate Geode
  • Almandine Garnet
  • Amazonite
  • Amethyst
  • Ametrine
  • Ammolite
  • Andalusite
  • Andesine Labradorite
  • Apatite
  • Aquamarine
  • Aventurine
  • Black Opal
  • Bloodstone
  • Boulder Opal
  • Calcite
  • Carnelian
  • Cat's Eye Apatite
  • Cat's Eye Aquamarine
  • Cat's Eye Gemstones
  • Cat's Eye Moonstone
  • Cat's Eye Opal
  • Cat's Eye Scapolite
  • Chalcedony
  • Charoite
  • Chocolate Opal
  • Chrome Diopside
  • Chrysoberyl
  • Chrysocolla
  • Chrysoprase
  • Citrine
  • Color Change Gemstones
  • Color-Change Diaspore
  • Color-Change Fluorite
  • Color-Change Garnet
  • Color-Change Sapphire
  • Coral
  • Demantoid Garnet
  • Dendritic Agate
  • Diamond
  • Druzy Amethyst
  • Druzy Azurite
  • Emerald
  • Enstatite
  • Fire Agate
  • Fire Opal
  • Fluorite
  • Fossil Coral
  • Garnet
  • Golden Beryl
  • Grandidierite
  • Grossularite Garnet
  • Hawk's Eye
  • Hematite
  • Hemimorphite Druzy
  • Hessonite Garnet
  • Hiddenite
  • Howlite
  • Hyalite Opal
  • Idocrase
  • Imperial Topaz
  • Iolite
  • Jade Gemstones
  • Jadeite
  • Jasper
  • Kornerupine
  • Kunzite
  • Kyanite
  • Labradorite
  • Lapis Lazuli
  • Larimar
  • Malachite
  • Malaya Garnet
  • Mali Garnet
  • Maw-Sit-Sit
  • Moonstone
  • Morganite
  • Mother of Pearl
  • Mystic Topaz
  • Nuummite
  • Obsidian
  • Onyx
  • Opal
  • Opal Doublet
  • Opal in Matrix
  • Pearl
  • Peridot
  • Pietersite
  • Prehnite
  • Pyrite
  • Pyrope Garnet
  • Quartz
  • Quartz Cat's Eye
  • Quartz With Marcasite
  • Rainbow Moonstone
  • Rainbow Pyrite
  • Rhodochrosite
  • Rhodolite Garnet
  • Rose Quartz
  • Rubellite Tourmaline
  • Ruby
  • Ruby in Fuchsite
  • Ruby-Zoisite
  • Rutile Quartz
  • Sapphire
  • Scapolite
  • Scolecite
  • Seraphinite
  • Serpentine
  • Sillimanite
  • Sillimanite Cat's Eye
  • Smithsonite
  • Smoky Quartz
  • Snowflake Obsidian
  • Sodalite
  • Spectrolite
  • Spessartite Garnet
  • Sphalerite
  • Sphene
  • Spinel
  • Star Diopside
  • Star Garnet
  • Star Gemstones
  • Star Lemon Quartz
  • Star Moonstone
  • Star Rose Quartz
  • Star Ruby
  • Star Sapphire
  • Star Sunstone
  • Strawberry Quartz
  • Sunstone
  • Tanzanite
  • Tiger's Eye
  • Tiger's Eye Matrix
  • Topaz
  • Tourmaline
  • Tsavorite Garnet
  • Turquoise
  • Variscite
  • Zircon
Main Categories
  • New Arrivals
  • Gemstone Lots
  • Calibrated Gemstones
  • Gemstones By Piece
  • Top Grade Gems
  • Matching Pairs
  • Cabochon Gemstones
  • Drilled Gems, Briolettes and Beads
  • Birthstones
  • Gemstone Carvings
  • Fancy Gemstones
  • Star Gemstones
  • Unheated Sapphire
English speaking customer support only

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

International:
+66-39303404

Save Money
No shipping Fees for Additional Items!
$8.90 Worldwide Shipping

Update Translation
 
Current Value
New Value
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