Calibrated 18 x 13 mm Oval Shape Natural Loose Gemstones: GemSelect

Item Description
Stone Type:	Loose Opal
Opal Weight:	6.50 ct Opal
Opal Shape:	Oval Facet Opal
Opal Size:	17.3 x 12.9 mm Opal
Opal Color:	Multicolor Opal
Opal Clarity:	Transparent Opal
Opal Origin:	Australia Opal
Opal Treatment:	Untreated
Opal Quantity:	1
Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Opal
Opal Weight:	9.66 ct Opal
Opal Shape:	Oval Cabochon Opal
Opal Size:	18.4 x 13.5 mm Opal
Opal Color:	Multicolor Opal
Opal Clarity:	Translucent Opal
Opal Origin:	Ethiopia Opal
Opal Treatment:	Untreated
Opal Quantity:	1
Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Opal
Opal Weight:	10.37 ct Opal
Opal Shape:	Oval Cabochon Opal
Opal Size:	18.2 x 13.5 mm Opal
Opal Color:	Earth Green Opal
Opal Clarity:	Opaque Opal
Opal Origin:	Brazil Opal
Opal Treatment:	Untreated
Opal Quantity:	1
Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Opal
Opal Weight:	16.50 ct Opal
Opal Shape:	Oval Cabochon Opal
Opal Size:	18.6 x 13.4 mm Opal
Opal Color:	Yellowish Green Opal
Opal Clarity:	Opaque Opal
Opal Origin:	Brazil Opal
Opal Treatment:	Untreated
Opal Quantity:	1
Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Opal
Opal Weight:	4.41 ct Opal
Opal Shape:	Oval Cabochon Opal
Opal Size:	17.7 x 12.6 mm Opal
Opal Color:	Multicolor Opal
Opal Clarity:	Translucent Opal
Opal Origin:	Australia Opal
Opal Treatment:	Untreated
Opal Quantity:	1
Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Opal
Opal Weight:	10.14 ct Opal
Opal Shape:	Oval Cabochon Opal
Opal Size:	17.7 x 13.4 mm Opal
Opal Color:	Yellowish Green Opal
Opal Clarity:	Opaque Opal
Opal Origin:	Brazil Opal
Opal Treatment:	Untreated
Opal Quantity:	1
Opal Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Opal
Opal Weight:	7.75 ct Opal
Opal Shape:	Oval Cabochon Opal
Opal Size:	17.8 x 13.4 mm Opal
Opal Color:	Multicolor Opal
Opal Clarity:	Translucent Opal
Opal Origin:	Australia Opal
Opal Treatment:	Untreated
Opal Quantity:	1
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 18 x13 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

I have used gm select a while ago and was always pleased with the products

Posted By Jaytee in November, 2023

Source: Bizrate

Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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Overall Rating -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

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Overall Rating -> 10

Awesome

Posted By Mic in May, 2023

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Overall Rating -> 8

I am currently pleased. I like the layout of the website.

Posted By RayPoppa in January, 2024

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Overall Rating -> 10

I have used Gem Select many times over the past 10 years and have always been happy with the product & services

Posted By Ordain in August, 2023

Source: Bizrate

Overall Rating -> 10

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024

Source: Bizrate

Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 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 -> 8

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 2023

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Overall Rating -> 10

I FOUND WHAT I WANT IT

Posted By GABY in March, 2024

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

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

Excellent selection of products. Website easy to navigate and make purchases.

Posted By David in April, 2023

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Overall Rating -> 10

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

Source: Bizrate

Selected Gemstones

Gemstones A-Z

Buy Oval Shape 18x13 mm Gems

6.5 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 17.3 x 12.9 mm

Natural Opal, Qty: 1 pc | 6.50 carat weight Opal

9.66 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 18.4 x 13.5 mm

Natural Opal, Qty: 1 pc | 9.66 carat weight Opal

10.37 carat Green Opal, Oval loose Opal from Brazil, Natural Untreated Gem, 18.2 x 13.5 mm

Natural Opal, Qty: 1 pc | 10.37 carat weight Opal

16.5 carat Green Opal, Oval loose Opal from Brazil, Natural Untreated Gem, 18.6 x 13.4 mm

Natural Opal, Qty: 1 pc | 16.50 carat weight Opal

4.41 ct Loose Oval Opal, 17.7 x 12.6 mm From Australia

Natural Opal, Qty: 1 pc | 4.41 carat weight Opal

10.14 carat Green Opal, Oval loose Opal from Brazil, Natural Untreated Gem, 17.7 x 13.4 mm

Natural Opal, Qty: 1 pc | 10.14 carat weight Opal

7.75 ct Loose Oval Opal, 17.8 x 13.4 mm From Australia

Natural Opal, Qty: 1 pc | 7.75 carat weight Opal

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