Buy 10 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 10 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 -> 10

It was easy to search and find what i wanted

Posted By Gunner in November, 2023

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Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

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Overall Rating -> 10

It was easy to navigate and I hope that the gem is as nice as the picture

Posted By 1 in April, 2024

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Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 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

Everything fine.

Posted By Hilario in December, 2023

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Overall Rating -> 10

My overall interaction with your website was pleasant, as always.

Posted By RJ in April, 2024

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Overall Rating -> 10

It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

Posted By Nikki J in September, 2023

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Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

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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 -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

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Overall Rating -> 10

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

Posted By Sboro in August, 2023

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Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

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Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 2023

Source: Bizrate

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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Gemstones A-Z

Buy Round Shape 10 mm Gems

1.21 ct Blue Kyanite, 6.2 mm Round Cut From Nepal

3.39 ct Round Labradorite, 7.1 mm From Madagascar

0.78 ct Loose Yellow Sapphire, 6.1 x 4.6 mm Oval Cut From Tanzania

2.83 ct Loose Trillion Cut Amethyst, 10.1 x 9.9 mm From Brazil

0.83 carat Yellow Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 7.7 x 5.7 mm

3.82 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.9 x 5.1 mm

0.45 ct Loose Yellow Sapphire, 4.8 x 4.7 mm Heart Cut From Tanzania

2.92 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.1 x 5.1 mm

2.78 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.5 mm

7.53 ct Asscher Cut Rose Quartz, 12.4 x 12.3 mm From South Africa

1.26 ct Loose Pink Tourmaline, 6.7 mm Round Cabochon From Mozambique

8.7 ct Oval Quartz Cat's Eye, 13.5 x 10 mm From Sri Lanka

1.35 carat Blue Tanzanite, Round loose Tanzanite from Tanzania, Natural Gems, 5.1 mm

4.18 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8.1 x 6.1 mm

5.52 ct Gray Star Sapphire, 9.5 x 8.5 mm Oval Cut From Myanmar

3.27 ct Loose Yellow Sapphire, 5 mm Round Cut From Tanzania

1.44 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 5 mm

2.23 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 6 mm

1.27 ct Cushion Cut Color-Change Diaspore, 10.5 x 4.5 mm From Turkey

8.58 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 12.3 x 8.1 mm

0.76 ct Oval Cut Peridot, 7.1 x 5.1 mm From China

4.14 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.9 x 7.9 mm

22.45 ct Oval Fossil Coral, 21.4 x 12.1 mm From Indonesia

5.05 ct Oval Fire Agate, 13.9 x 9.4 mm From Mexico

3.83 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 5.6 mm

2.43 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.2 x 5.2 mm

3.97 carat Swiss Blue Topaz, Fancy-Cut loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

39.41 ct Round Hematite, 21.7 mm From Brazil

2.56 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.1 x 5.1 mm

9.99 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 23.9 x 12.2 mm

0.12 ct Square Cut Iolite, 3 x 2.9 mm From Madagascar

3.26 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5 mm

Gemstone Information

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