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

Marquise Shape 20x10 mm Gems

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.

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

I like it

Posted By Swan in February, 2023

Source: Bizrate

Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

Source: Bizrate

Overall Rating -> 8

order arrieved earlier than expected. item was as advertised.

Posted By Amerhyst in November, 2022

Source: Bizrate

Overall Rating -> 10

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023

Source: Bizrate

Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

Source: Bizrate

Overall Rating -> 10

You were the only site that had the color gems with oval cut in sizes 6mm to 4mm that I could find and it was very easy to find them with your search tool!

Posted By Streetdonuts in February, 2023

Source: Bizrate

Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

Source: Bizrate

Overall Rating -> 10

It was fast purchasing procesos, very clear and precise, loved It

Posted By Sebastian in March, 2023

Source: Bizrate

Overall Rating -> 10

My last experience was good, in fact every experience I have had with them has met my expectations or surpassed them. These are really good people to work with.

Posted By Spinach in May, 2023

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

I'd like to recommend GemSelect, great items, quality, customer service & fast deliveries.

Posted By Tadeo in December, 2022

Source: Bizrate

Overall Rating -> 10

all its ok

Posted By PETER in December, 2022

Source: Bizrate

Overall Rating -> 9

As long as I continue to have confidence that what I am buying is genuinely what is being advertised then I am happy. If an item is listed as natural but is actually lab created, well that would be the last time I support this company.

Posted By Zac in December, 2022

Source: Bizrate

Overall Rating -> 9

GemSelect has a fantastic assortment of Semi-precious stones. I have not found any other web site with the variety you have.

Posted By RobDill in August, 2023

Source: Bizrate

Selected Gemstones

Gemstones A-Z

Buy Marquise Shape 20x10 mm Gems

6.6 ct Green Amazonite, 19.8 x 10.1 mm Marquise Cut From Madagascar

18.43 ct Green Amazonite, 20 x 10.3 mm Marquise Cut From Madagascar

7.16 ct Marquise Cut Amethyst, 19.5 x 9.7 mm From Brazil

8.7 ct Marquise Slice Ruby in Fuchsite, 20.8 x 10.3 mm From Ethiopia

8.98 ct Green Amazonite, 20.1 x 10.2 mm Marquise Cut From Madagascar

9.57 ct Green Amazonite, 19.9 x 10.2 mm Marquise Cut From Madagascar

9.14 ct Green Amazonite, 19.7 x 10.1 mm Marquise Cut From Madagascar

6.68 ct Marquise Black Opal, 19.5 x 10.3 mm From Ethiopia

7.28 ct Yellow Citrine, 20.2 x 10.1 mm Marquise Cut From Brazil

17.83 ct Green Amazonite, 20 x 10.2 mm Marquise Cut From Madagascar

6.15 ct Marquise Cut Amethyst, 19.5 x 9.8 mm From Brazil

17.92 ct Green Amazonite, 19.9 x 10.2 mm Marquise Cut From Madagascar

5.64 ct Yellow Citrine, 20.2 x 10.1 mm Marquise Cut From Brazil

5.46 ct Marquise Slice Ruby in Fuchsite, 20.1 x 9.8 mm From Ethiopia

8.23 ct Green Amazonite, 20 x 10.2 mm Marquise Cut From Madagascar

12.07 ct Yellow Citrine, 20.1 x 9.8 mm Marquise Cut From Brazil

10.06 ct Green Amazonite, 20.1 x 10.4 mm Marquise Cut From Madagascar

8.94 ct Marquise Rutile Quartz, 20.1 x 10.1 mm From India

18.56 ct Green Amazonite, 20 x 10.2 mm Marquise Cut From Madagascar

5.73 ct Green Amazonite, 19.5 x 9.7 mm Marquise Cut From Madagascar

6.84 ct Green Amazonite, 19.2 x 9.9 mm Marquise Cut From Madagascar

7.1 ct Marquise Cut Amethyst, 20 x 9.8 mm From Brazil

9.01 ct Green Amazonite, 20.1 x 10.2 mm Marquise Cut From Madagascar

6.29 ct Green Jadeite, 20.5 x 10.1 mm Marquise Cut From Myanmar

8.28 ct Green Amazonite, 19.5 x 9.9 mm Marquise Cut From Madagascar

17.97 ct Green Amazonite, 19.9 x 10.1 mm Marquise Cut From Madagascar

5.67 ct Yellow Citrine, 19.8 x 10.1 mm Marquise Cut From Brazil

6.91 ct Green Amazonite, 19.5 x 10.2 mm Marquise Cut From Madagascar

4.95 ct Marquise Slice Ruby in Fuchsite, 20.3 x 9.8 mm From Ethiopia

13.5 ct Green Amazonite, 19.5 x 10.1 mm Marquise Cut From Madagascar

7.12 ct Green Amazonite, 19.7 x 9.9 mm Marquise Cut From Madagascar

9.77 ct Marquise Slice Ruby in Fuchsite, 19.9 x 9.8 mm From Ethiopia

Marquise Shape 20x10 mm Gems

Gemstone Information