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

The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

Posted By Orchidisle in February, 2024

Source: Bizrate

Overall Rating -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024

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Overall Rating -> 10

Very good customer service. I had an issue on my end with shipping and I received a response the next day!

Posted By Orphanboy in December, 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

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023

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Overall Rating -> 10

Great experience! First time buyer

Posted By Todi89 in February, 2024

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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.

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Overall Rating -> 10

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Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

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Overall Rating -> 10

all good

Posted By John in December, 2023

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Overall Rating -> 10

Great Job today! No issues!

Posted By Samlovesgems777 in August, 2023

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Overall Rating -> 10

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

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Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

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Overall Rating -> 10

The website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 2023

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Overall Rating -> 9

It went well

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Gemstones A-Z

Buy Round Shape 10 mm Gems

0.44 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4.2 mm

1.23 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gem, 9.1 x 5.1 mm

2.37 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.2 x 3.2 mm

1.49 ct Oval Prehnite, 8.6 x 6.6 mm From South Africa

3.36 ct Loose Yellow Sapphire, 4.2 x 2.2 mm Marquise Cut From Tanzania

0.98 carat Green Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 15 x 2.8 mm

18.91 ct Pencil Cut Tiger's Eye, 25.6 x 9.4 mm From Thailand

1.49 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.5 mm

31.18 ct Oval Hematite, 23.9 x 16.2 mm From Brazil

18.31 ct Square Cat's Eye Opal, 18 x 17.7 mm From Brazil

2.85 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gems, 7.1 x 7 mm

2.54 ct Loose Round Labradorite, 8.2 mm From Madagascar

2.32 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5 mm

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

1.44 ct Loose Orange Sapphire, 6.1 x 4.1 mm Oval Cut From Tanzania

9.61 ct Faceted Sphere Agate, 11 mm From India

20.38 carat Pear Shape Onyx, loose Certified Onyx from Sri Lanka, Natural Gem, 24.7 x 18 mm

3.25 ct Orange Moonstone, 8.1 x 7.9 mm Trillion Cut From India

0.43 ct Loose Yellow Sapphire, 4.4 mm Round Cut From Tanzania

3.68 ct Yellow Cat's Eye Apatite, 9.3 x 7.5 mm Oval Cut From Kenya

7.69 ct Oval Boulder Opal, 15.7 x 12.2 mm From Australia

30.69 ct Fancy Rhodochrosite, 30.3 x 15.9 mm From South Africa

10.76 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 14.1 x 10 mm

6.58 ct Yellow Quartz, 11.8 x 11.4 mm Asscher Cut From Brazil

1.51 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14 x 3.5 mm

1.98 carat Brown Diamond, Pear Shape loose Diamond from South Africa, Natural Untreated Gem, 7.8 x 6.4 mm

3 ct Brown Moonstone, 10.4 x 10.2 mm Carved From India

13.74 ct Marquise Jasper, 34 x 12.1 mm From Mexico

0.46 carat Green Sapphire, Emerald-Cut loose Sapphire from Tanzania, Natural Gem, 5.2 x 3.2 mm

1.68 ct Blue Kyanite, 8.2 x 6.2 mm Oval Cut From Nepal

2.16 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.2 x 7.2 mm

2.01 ct Marquise Tiger's Eye, 11.8 x 5.9 mm From Thailand

Gemstone Information

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