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

Item Description
Stone Type:	Loose Ametrine
Ametrine Weight:	17.33 ct Ametrine
Ametrine Shape:	Oval Facet Ametrine
Ametrine Size:	18.7 x 13 mm Ametrine
Ametrine Color:	Bi-color Ametrine
Ametrine Clarity:	VVS-VS Ametrine
Ametrine Origin:	Brazil Ametrine
Ametrine Treatment:	Untreated
Ametrine Quantity:	1
Ametrine Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Ametrine
Ametrine Weight:	10.95 ct Ametrine
Ametrine Shape:	Oval Facet Ametrine
Ametrine Size:	17.3 x 13.5 mm Ametrine
Ametrine Color:	Bi-color Ametrine
Ametrine Clarity:	VVS Ametrine
Ametrine Origin:	Brazil Ametrine
Ametrine Treatment:	Untreated
Ametrine Quantity:	1
Ametrine Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Ametrine
Ametrine Weight:	16.92 ct Ametrine
Ametrine Shape:	Oval Facet Ametrine
Ametrine Size:	17.5 x 13.4 mm Ametrine
Ametrine Color:	Bi-color Ametrine
Ametrine Clarity:	VS Ametrine
Ametrine Origin:	Brazil Ametrine
Ametrine Treatment:	Untreated
Ametrine Quantity:	1
Ametrine Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Ametrine
Ametrine Weight:	16.73 ct Ametrine
Ametrine Shape:	Oval Facet Ametrine
Ametrine Size:	18.6 x 13.2 mm Ametrine
Ametrine Color:	Bi-color Ametrine
Ametrine Clarity:	VS Ametrine
Ametrine Origin:	Brazil Ametrine
Ametrine Treatment:	Untreated
Ametrine Quantity:	1
Ametrine Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Ametrine
Ametrine Weight:	14.62 ct Ametrine
Ametrine Shape:	Oval Facet Ametrine
Ametrine Size:	17.4 x 13 mm Ametrine
Ametrine Color:	Bi-color Ametrine
Ametrine Clarity:	VVS-VS Ametrine
Ametrine Origin:	Brazil Ametrine
Ametrine Treatment:	Untreated
Ametrine Quantity:	1
Ametrine 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

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Overall Rating -> 10

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Overall Rating -> 10

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

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Overall Rating -> 10

Interested in unusual stones and found many that I purchased or will purchase in the near future. I have been a customer of gem select for almost ten years and have always been pleased with buying experience and the delivered product

Posted By Fairhope Pete in December, 2023

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Overall Rating -> 10

Love the variety of stones, sizes and the prices

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Overall Rating -> 10

Gem Select has gems at afffordable prices.

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I’ve enjoyed purchasing stones from this site. It’s convenient and fairly priced.

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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

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Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

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Overall Rating -> 9

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Overall Rating -> 9

It was simple and clear to understand.

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Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

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Overall Rating -> 10

The website is very easy to use. The search function, filter and sort functions are very helpful.

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Overall Rating -> 10

I bought a small ring green so I may practice my jewelry making.

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Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 2023

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Selected Gemstones

Gemstones A-Z

Buy Oval Shape 18x13 mm Gems

17.33 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 18.7 x 13 mm

Natural Ametrine, Qty: 1 pc | 17.33 carat weight Ametrine

10.95 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 17.3 x 13.5 mm

Natural Ametrine, Qty: 1 pc | 10.95 carat weight Ametrine

16.92 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 17.5 x 13.4 mm

Natural Ametrine, Qty: 1 pc | 16.92 carat weight Ametrine

16.73 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 18.6 x 13.2 mm

Natural Ametrine, Qty: 1 pc | 16.73 carat weight Ametrine

14.62 carat Bi-color Ametrine, Oval loose Ametrine from Brazil, Natural Untreated Gem, 17.4 x 13 mm

Natural Ametrine, Qty: 1 pc | 14.62 carat weight Ametrine

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