Buy 11 mm Round Calibrated Gemstones from GemSelect

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 Round shapes, facet cut and cabochon gems available now in 11 mm diameter 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 around 0.3 mm or slightly higher even. This small variance can usually be accommodated for 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 -> 9

It went well

Posted By Rob in December, 2023

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Overall Rating -> 10

Great selection

Posted By GHS40 in December, 2023

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Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

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Overall Rating -> 10

it was good

Posted By Bobk in January, 2024

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Overall Rating -> 10

The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

Posted By Jen in August, 2023

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Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

Source: Bizrate

Overall Rating -> 10

Love gemselect

Posted By Joshua Howard in March, 2024

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Overall Rating -> 10

Had a problem ordering first time. Someone from Gem Select reached out to me and cleared problem and I made purchase.

Posted By Myrtle in February, 2024

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Overall Rating -> 10

The site is very easy to use and I will continue to shop here. The quality is superb

Posted By Genia in January, 2024

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Overall Rating -> 10

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

Posted By Skip in November, 2023

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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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.

Posted By Phoenix in February, 2024

Source: Bizrate

Overall Rating -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

Source: Bizrate

Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

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Gemstones A-Z

Buy Round Shape 11 mm Gems

1.26 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.1 x 5.9 mm

49.65 ct Fancy Jasper, 41.1 x 26.5 mm From Indonesia

0.96 ct Octagon Cut Color-Change Diaspore, 6.6 x 4.6 mm From Turkey

2.91 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.6 mm

2.44 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.2 x 5.2 mm

2.84 ct Oval Cut Andalusite, 5 x 3.1 mm From Brazil

19.68 ct Oval Tiger's Eye, 24.7 x 16.6 mm From Thailand

1.17 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.2 x 4.3 mm

16.02 carat Pear Rainbow Moonstone, loose Certified Rainbow Moonstone from the United States, Natural Untreated Gem, 19.4 x 16.2 mm

8.84 ct Loose Round Pietersite, 15.3 mm From Namibia

17.24 ct Loose Fancy Charoite, 27.5 x 14.2 mm From Russia

1.02 ct Round Tiger's Eye, 6 mm From Thailand

1.09 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 10.8 x 5 mm

9.27 ct Loose Oval Lapis Lazuli, 15.1 x 11.4 mm From Afghanistan

23.05 ct Heart Hematite, 20.3 x 19.1 mm From Brazil

1.91 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 8.1 x 6.1 mm

2.72 ct Loose Orange Sapphire, 4.2 x 3.2 mm Oval Cut From Tanzania

6.44 ct Yellow Quartz, 16.9 x 7.8 mm Octagon Cut From Brazil

4.04 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 11.8 x 6 mm

0.81 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 6.9 x 5 mm

3.55 carat Half Drilled Briolette Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 11 mm

3.58 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 14.5 x 10.4 mm

1.02 ct Loose Yellow Sapphire, 7 x 5.1 mm Oval Cut From Madagascar

0.2 ct Yellow Diamond, 3.7 mm Diamond Cut From India

5.54 ct Pink Morganite, 13 x 10.2 mm Oval Cut From Afghanistan

1.89 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.1 x 6.8 mm

3.07 ct Green Sphene, 8.6 x 7.5 mm Oval Cut From Sri Lanka

1.05 ct Octagon Cut Peridot, 7 x 5 mm From China

1.57 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.8 x 6.4 mm

24.54 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 28 x 21 mm

1.42 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.2 x 4.9 mm

1.25 ct Loose Orange Sapphire, 5.1 mm Round Cut From Tanzania

Gemstone Information

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