Calibrated 16 x 12 mm Oval Shape Natural Loose Gemstones: GemSelect

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	5.66 ct Black Opal
Black Opal Shape:	Oval Cabochon Black Opal
Black Opal Size:	15.6 x 11.6 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Opaque Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	5.34 ct Black Opal
Black Opal Shape:	Oval Cabochon Black Opal
Black Opal Size:	15.7 x 11.6 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Opaque Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	4.32 ct Black Opal
Black Opal Shape:	Oval Cabochon Black Opal
Black Opal Size:	15.7 x 11.6 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Opaque Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	5.29 ct Black Opal
Black Opal Shape:	Oval Facet Black Opal
Black Opal Size:	16.2 x 12.4 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Translucent Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	6.46 ct Black Opal
Black Opal Shape:	Oval Cabochon Black Opal
Black Opal Size:	15.9 x 12.4 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Opaque Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	5.27 ct Black Opal
Black Opal Shape:	Oval Facet Black Opal
Black Opal Size:	16.3 x 12.2 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Translucent Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	5.51 ct Black Opal
Black Opal Shape:	Oval Cabochon Black Opal
Black Opal Size:	16.2 x 11.5 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Opaque Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Black Opal
Black Opal Weight:	4.45 ct Black Opal
Black Opal Shape:	Oval Cabochon Black Opal
Black Opal Size:	16.5 x 11.6 mm Black Opal
Black Opal Color:	Multicolor Black Opal
Black Opal Clarity:	Translucent Black Opal
Black Opal Origin:	Ethiopia Black Opal
Black Opal Treatment:	Smoked
Black Opal Quantity:	1
Black Opal Certificate:	GemSelect
Product Description:

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated oval shapes, facet cut and cabochon gems available now in 16 x 12 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

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Gemstone Information

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Overall Rating -> 10

Great site

Posted By Lord of Bananas in November, 2023

Source: Bizrate

Overall Rating -> 10

I was looking for a source for affordable genuine gemstones for my grandson who is currently very interested in rocks and gems. I was quite surprised and pleased to find GemSelect and finding the right stones at the right price couldn't have been simpler.

Posted By Papa in December, 2023

Source: Bizrate

Overall Rating -> 10

I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

Posted By Ktreva52 in February, 2024

Source: Bizrate

Overall Rating -> 10

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023

Source: Bizrate

Overall Rating -> 10

Hello: You do have good website. Vast majority of folks would buy the Gems for its spiritual, physical / energy level, emotional level positive aspects. You have only very brief mention of this aspect of each Gem ..may be you can add little bit more about ways to leverage the beneificial effect of each gems i.e. some practical tips.ThanksRupen Patel

Posted By EarthDeep in February, 2024

Source: Bizrate

Overall Rating -> 10

Easy to use,I have spent many hours looking at the site

Posted By Skip in November, 2023

Source: Bizrate

Overall Rating -> 10

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024

Source: Bizrate

Overall Rating -> 10

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023

Source: Bizrate

Overall Rating -> 9

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024

Source: Bizrate

Overall Rating -> 10

Easy to use website, made it very easy to buy. Will shop here again.

Posted By Bjorn in January, 2024

Source: Bizrate

Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

Source: Bizrate

Selected Gemstones

Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

5.66 ct Oval Black Opal, 15.6 x 11.6 mm From Ethiopia

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5.34 ct Oval Black Opal, 15.7 x 11.6 mm From Ethiopia

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4.32 ct Oval Black Opal, 15.7 x 11.6 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 4.32 carat weight Black Opal

5.29 ct Loose Oval Cut Black Opal, 16.2 x 12.4 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 5.29 carat weight Black Opal

6.46 ct Oval Black Opal, 15.9 x 12.4 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 6.46 carat weight Black Opal

5.27 ct Loose Oval Cut Black Opal, 16.3 x 12.2 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 5.27 carat weight Black Opal

5.51 ct Oval Black Opal, 16.2 x 11.5 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 5.51 carat weight Black Opal

4.45 ct Oval Black Opal, 16.5 x 11.6 mm From Ethiopia

Natural Black Opal, Qty: 1 pc | 4.45 carat weight Black Opal

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