Marquise Shape 20 x 10 mm calibrated natural loose gems from GemSelect

Item Description
Stone Type:	Loose Amethyst
Amethyst Weight:	7.16 ct Amethyst
Amethyst Shape:	Marquise Facet Amethyst
Amethyst Size:	19.5 x 9.7 mm Amethyst
Amethyst Color:	Medium Purplish Violet Amethyst
Amethyst Clarity:	VVS-VS Amethyst
Amethyst Origin:	Brazil Amethyst
Amethyst Treatment:	Untreated
Amethyst Quantity:	1
Amethyst Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Amethyst
Amethyst Weight:	6.15 ct Amethyst
Amethyst Shape:	Marquise Facet Amethyst
Amethyst Size:	19.5 x 9.8 mm Amethyst
Amethyst Color:	Medium Purplish Violet Amethyst
Amethyst Clarity:	VS Amethyst
Amethyst Origin:	Brazil Amethyst
Amethyst Treatment:	Untreated
Amethyst Quantity:	1
Amethyst Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Amethyst
Amethyst Weight:	6.79 ct Amethyst
Amethyst Shape:	Marquise Facet Amethyst
Amethyst Size:	19.7 x 9.8 mm Amethyst
Amethyst Color:	Purplish Violet Amethyst
Amethyst Clarity:	VS Amethyst
Amethyst Origin:	Brazil Amethyst
Amethyst Treatment:	Untreated
Amethyst Quantity:	1
Amethyst Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Amethyst
Amethyst Weight:	6.76 ct Amethyst
Amethyst Shape:	Marquise Facet Amethyst
Amethyst Size:	19.5 x 10.2 mm Amethyst
Amethyst Color:	Medium Violet Amethyst
Amethyst Clarity:	VS Amethyst
Amethyst Origin:	Brazil Amethyst
Amethyst Treatment:	Untreated
Amethyst Quantity:	1
Amethyst Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Amethyst
Amethyst Weight:	7.10 ct Amethyst
Amethyst Shape:	Marquise Facet Amethyst
Amethyst Size:	20 x 9.8 mm Amethyst
Amethyst Color:	Deep Purplish Violet Amethyst
Amethyst Clarity:	VVS Amethyst
Amethyst Origin:	Brazil Amethyst
Amethyst Treatment:	Untreated
Amethyst Quantity:	1
Amethyst Certificate:	GemSelect
Product Description:

Item Description
Stone Type:	Loose Amethyst
Amethyst Weight:	8.06 ct Amethyst
Amethyst Shape:	Marquise Facet Amethyst
Amethyst Size:	19.2 x 9.7 mm Amethyst
Amethyst Color:	Deep Purplish Violet Amethyst
Amethyst Clarity:	VS-SI Amethyst
Amethyst Origin:	Brazil Amethyst
Amethyst Treatment:	Untreated
Amethyst Quantity:	1
Amethyst 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 marquise shaped facet cut gems, gemstone carvings and cabochons available in 20 mm x 10 mm sizes. For the largest selection of colored gemstones, Shop GemSelect Online.

As a general guideline, when it comes to calibrated gems, they are not usually expected to be cut to exact measurements and specifications. But rather, they're cut with slight variance in size, though the close approximatation in size is not clearly defined, there are general guidelines for what is considered acceptable. Obviously larger and heavy carat weight stones allow more room in size for variance, while smaller stones may leave little to none. This means a large 30mm calibrated gemstone, could actually be closer to 31 millimeters. For this reason, we recommend to always view the exact size in addition to the calibrated size details. The exact size will inform you of the variance you can expect. Some setting styles are more flexible with variance, such as prong settings, while other styles of mountings may need almost an exact size to the fraction of millimeter.

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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Easy to find the stones I was looking for. Always good quality stones

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Overall Rating -> 10

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

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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.

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Overall Rating -> 10

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023

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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

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Gemstones A-Z

Buy Marquise Shape 20x10 mm Gems

7.16 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.5 x 9.7 mm

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6.15 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.5 x 9.8 mm

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6.79 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.7 x 9.8 mm

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6.76 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.5 x 10.2 mm

Buy Natural Amethyst, Qty: 1 pc | 6.76 carat weight Amethyst

7.1 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 20 x 9.8 mm

Buy Natural Amethyst, Qty: 1 pc | 7.10 carat weight Amethyst

8.06 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.2 x 9.7 mm

Buy Natural Amethyst, Qty: 1 pc | 8.06 carat weight Amethyst

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