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

Super easy to do business for great products.

Posted By BoBBy in January, 2024

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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

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Overall Rating -> 10

I enjoyed browsing though different varieties of rubies. I felt that the experience was simple and easy to navigate!

Posted By Daws in July, 2023

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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

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

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Overall Rating -> 10

Great Job today! No issues!

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Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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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

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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

No issues at all. It was great.

Posted By LJXK in May, 2023

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Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

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Overall Rating -> 10

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

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Overall Rating -> 10

this was very easy im exited to get my order

Posted By Mr. in April, 2024

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Overall Rating -> 10

Great selection and excellent website.

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Overall Rating -> 10

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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Gemstones A-Z

Buy Round Shape 10 mm Gems

1.95 carat Swiss Blue Topaz, Fancy-Cut loose Topaz from Brazil, Natural Gems, 7.2 x 5.1 mm

1.43 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.4 x 6.2 mm

2.84 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 7.1 mm

20.49 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 19.9 x 15.1 mm

1.38 ct Cushion Cut Color-Change Diaspore, 8.1 x 5 mm From Turkey

3.01 carat Red Zircon, Oval loose Zircon from Tanzania, Natural Untreated Gem, 8.9 x 6.7 mm

3.01 carat Brown Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gems, 6.7 x 5.3 mm

50.9 ct Oval Rhodochrosite, 27 x 20.2 mm From South Africa

33.09 ct Oval Obsidian, 38.6 x 19.2 mm From the United States

27.51 ct Loose Round Bloodstone, 25 mm From Madagascar

1.1 ct Loose Purple Sapphire, 6 x 5.5 mm Cushion Cut From Tanzania

0.77 ct Loose White Sapphire, 4.3 mm Diamond Cut From Madagascar

19.9 ct Loose Cushion Charoite, 19.8 x 15.3 mm From Russia

3.66 carat Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8.2 x 6.1 mm

3.05 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 8 x 5.1 mm

53.68 carat Pear Hematite, loose Certified Hematite from Brazil, Natural Untreated Gem, 34.3 x 20.2 mm

0.48 ct Blue Kyanite, 3.7 mm Round Cut From Nepal

11.47 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 16.2 x 12.1 mm

4.1 carat Diamond-Cut Tsavorite Garnet, loose Certified Tsavorite Garnet from Kenya, Natural Untreated Gems, 2.1 mm

9.16 ct Oval Tiger's Eye, 14 x 10 mm From Thailand

1.47 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.9 x 5 mm

12.67 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 16.1 mm

1.21 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.2 x 5.9 mm

0.23 carat Oval Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 5.1 x 3.1 mm

3.2 ct Oval Strawberry Quartz, 10.1 x 8.1 mm From Russia

19.64 carat Pear Ruby-Zoisite, loose Certified Ruby-Zoisite from Tanzania, Natural Untreated Gem, 20.2 x 14.1 mm

0.78 ct Loose Yellow Sapphire, 3.7 x 3.7 mm Princess Cut From Tanzania

31.56 ct Baguette Jasper, 25.1 x 18.1 mm From Indonesia

0.37 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 5.9 x 4.1 mm

8.48 carat Yellow Citrine, Briolette loose Citrine from Brazil, Natural Untreated Gem, 15.3 mm

10.32 ct Marquise Slice Ruby in Fuchsite, 20.9 x 12.2 mm From Ethiopia

0.65 ct Loose Violet Spinel, 5.2 x 4.6 mm Cushion Cut From Tanzania

Gemstone Information

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