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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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 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

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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

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 2023

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Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

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Overall Rating -> 10

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

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Overall Rating -> 10

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Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 2023

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Overall Rating -> 10

I searched for the item by description and millimeter and had my choice come up and then made the best selection.

Posted By Tim in April, 2024

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Overall Rating -> 10

No issues at all. It was great.

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Overall Rating -> 10

I was pleased with the selection of gems, the ease of navigating, and the smooth checkout

Posted By JamesMichael781 in September, 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

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Overall Rating -> 10

Easy to navigate

Posted By G Funk in December, 2023

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Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

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Overall Rating -> 10

Very detailed and great pictures

Posted By Alexandrite in November, 2023

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Gemstones A-Z

Buy Round Shape 11 mm Gems

5.93 ct Oval Actinolite Cat's Eye, 13.2 x 11.1 mm From the United States

8.44 carat Black Tourmaline, Pear Shape loose Tourmaline from Mozambique, Natural Untreated Gem, 13.8 x 11.3 mm

2.47 carat Pink Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gems, 6.4 mm

7.37 ct Oval Cut Strawberry Quartz, 13.3 x 11.7 mm From Russia

2.77 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.8 x 4.8 mm

0.85 ct Oval Sillimanite Cat's Eye, 6.5 x 4.5 mm From Madagascar

5.95 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 9 x 9 mm

1.18 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

9.41 ct Yellow Quartz, 15.9 x 13.9 mm Star Cut From Brazil

25.69 carat Pear Obsidian, loose Certified Obsidian from Mexico, Natural Untreated Gem, 26.2 x 19.3 mm

3.45 ct Loose Orange Sapphire, 5 x 3.1 mm Oval Cut From Tanzania

4.09 ct Oval Spectrolite, 10.1 x 8.3 mm From Finland

5.78 carat Pear Rutile Quartz, loose Certified Rutile Quartz from India, Natural Untreated Gem, 14.9 x 10.9 mm

8.6 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 13.2 x 11.6 mm

2.96 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

8.05 carat Pink Kunzite, Pear Shape loose Kunzite from Afghanistan, Natural Untreated Gem, 14.7 x 9.8 mm

2.1 carat Blue Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 4.5 mm

0.04 ct Green Diamond, 2.2 mm Diamond Cut From India

3.76 ct Round Checkerboard Smoky Quartz, 8.1 mm From Brazil

3.65 ct Oval Strawberry Quartz, 10.2 x 8.2 mm From Russia

2.54 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.1 mm

1.1 carat Orange Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gems, 8.2 x 4.2 mm

0.99 carat Oval Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 6.7 x 5.1 mm

3.02 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 4.9 x 4.8 mm

4.12 carat White Topaz, Round loose Topaz from Brazil, Natural Untreated Gem, 9.5 mm

21.27 carat Pear Tiger's Eye Matrix, loose Certified Tiger's Eye Matrix from Mexico, Natural Untreated Gem, 29.5 x 15.5 mm

47.54 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 36.3 x 27.8 mm

7.13 ct Cushion Boulder Opal, 13.5 x 13.1 mm From Australia

25.17 ct Brown Moonstone, 22.1 x 16 mm Oval Cut From India

1.39 carat Cushion Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 8.8 x 6.5 mm

31.1 ct Oval Chrysocolla, 28.6 x 21.3 mm From Australia

15.61 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 20.3 x 12.4 mm

Gemstone Information

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