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Gemstones
Boulder Opal
Item ID = 575199

11.6 carat Fancy 18.8x12.3 mm Multicolor Boulder Opal Gemstone

11.61 ct Fancy Cabochon Multicolor Boulder Opal Gemstone 18.81 mm x 12.3 mm (Product ID: 575199)

11.61 ct Fancy Cabochon Multicolor Boulder Opal Gem 18.81 mm x 12.3 mm (Photo A)

11.61 ct Fancy Cabochon Multicolor Boulder Opal Gem 18.81 mm x 12.3 mm (Photo B)

11.61 ct Fancy Cabochon Multicolor Boulder Opal Gem 18.81 mm x 12.3 mm (Photo C)

Item in Stock

Photos above are of Actual Item for Sale

9.1 out of 10

Product ID:

575199

Type:

Boulder Opal

Weight:

11.61 ct 1 gem

Size:(more)

18.8 x 12.3 x 5.1 mm

Shape:

Fancy Cabochon

Color:

Multicolor

Clarity:

Opaque

Treatment:

Untreated

Origin:

Australia

Content:

1 pc

Certificate Options

Download Identification Report PDF

BGL Brief Report $ 15.00

Turnaround Time: 3-4 working days Details

AIGS Brief Report $ 30.00

Turnaround Time: 5-10 working days Details

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Certified Customer Reviews

Overall Rating -> 10

Great service, heard nothing but good reviews

Posted By Thank you in September, 2020

Source: Bizrate

Overall Rating -> 10

I keep coming back to this website. Navigation is nearly perfect, they just need to add an option to select/unselect the 'treatment' of crystals. And I would like to be able to save all the photos of crystals I'm purchasing and not just the first one. This site is I believe is best out there for in depth variety of sizes and colors. I give it 10/10. If they don't have something I need and I have to shop somewhere else I keep coming back here just to compare prices vs clarity just so I can size up other crystals from somewhere else. This site sets standards!!

Posted By Konstantin M. in September, 2020

Source: Bizrate

Overall Rating -> 10

I continue to use GemSelect due to their rapid customer service & shipping response, accuracy of what is described in store description, and variety of options (all price ranges). Love it for a starting out gemstone collector/investor.

Posted By BlueJacers in September, 2020

Source: Bizrate

Overall Rating -> 10

The filtering makes the selection process very convenient and even though each stone is natural and unique, I was able to find exactly what I was looking for.

Posted By Ronin in September, 2020

Source: Bizrate

Overall Rating -> 10

It was super easy to find what we wanted. The price was right.

Posted By Slamicky in September, 2020

Source: Bizrate

Overall Rating -> 10

Because I look at rocks and gems online Google tends to push me to see more...haha, not a bad thing. And while directed to another gem site, and considering should I buy? I knew to look here at Gem Select first, if only to compare price/quality... hands down Gem Select has by and far the better offerings, impressed me enough to follow through with a purchase for a few stones! I'm so excited! Cannot wait to see the tsavorite garnet and others on the way!

Posted By Kentq in September, 2020

Source: Bizrate

Shipping and Combining Back To Top
Express Shipping: $29.90 USD Flat Rate - Full Value Insurance / Most shipments delivered within 3-4 days. Economy Shipping: $8.90 USD Flat Rate - Insured for up to $200 USD / Most shipments delivered within 7-14 days. Free Combining of orders - No extra shipping fees. Pay one flat rate shipping fee for all items per transaction / shipment. No minimum and no maximum order value. Order as many items as you like and still pay only one single low flat rate shipping fee starting at $8.90 (Economy) or $29.90 (Express).
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Guarantee / Certification
All gemstones are natural! All photos and videos are of the actual gem for sale (No Stock Photos) We offer certification from AIGS for USD 30.00 (5-10 additional days) We also offer certification from the BGL lab for USD 15.00 only (3-4 days)
Size and Weight Back To Top
Gems are always measured in Millimeter (mm) Compare mm Size with US coins 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
Additional Quantities
Every item is unique, so you can only order 1 of each item However, we often have similar or matching items. If so, we display them on the same gem detail page
Clarity Explained Back To Top
IF = Loupe Clean - Internally flawless; free of inclusions VVS = Almost Loupe Clean - Very, very slight inclusions; inclusions barely seen under 10x magnification VS = Eye Clean - Very slight inclusions; inclusions can be seen under 10x magnification SI = Slightly included - Small inclusions can be seen with the naked eye I1 = Included - Inclusions can be seen with the naked eye Transparent = A gemstone having the property of transmitting light without serious diffusion / may have rutile or other inclusions Translucent = Allowing light to pass through, but not transparent Opaque = Does not allow light to pass through
Return Policy
All gems have a 30-day inspection period, which begins on the date of delivery. Gems may be returned for a full refund during this period. Please email us for return authorization code when returning a gem. For more details click here
Treatment Back To Top
Untreated: More about treatments