Calibrated 7 mm Round Shape Loose Natural 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 7 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

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Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

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Overall Rating -> 10

No issues at all. It was great.

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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.

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Overall Rating -> 8

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LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

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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

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.

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Overall Rating -> 10

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Overall Rating -> 10

I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.

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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).

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Overall Rating -> 10

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Overall Rating -> 10

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Gemstones A-Z

Buy Round Shape 7 mm Gems

12.12 carat Black Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 19.4 x 9.7 mm

11.45 carat Green Tourmaline, Carved Leaf loose Tourmaline from Mozambique, Natural Untreated Gems, 19 x 10.3 mm

19 carat Pear Lepidolite, loose Certified Lepidolite from the United States, Natural Untreated Gem, 28.4 x 18.7 mm

52.58 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 38.5 x 28.3 mm

1.37 ct Loose Yellow Sapphire, 3.6 mm Diamond Cut From Tanzania

4.31 ct Round Cut Strawberry Quartz, 11 mm From Russia

2.15 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 7.2 x 5.2 mm

1.25 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7.1 x 5.1 mm

2.11 ct Red Coral, 11.9 x 5 mm Oval Cut From Australia

7.73 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 13.8 x 7.9 mm

25.96 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 22.8 x 18.4 mm

0.91 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 11.2 x 4.7 mm

3.16 carat Carved Flower Ruby, loose Certified Ruby from Madagascar, Natural Gem, 12.6 x 7.4 mm

9.07 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14 x 9.8 mm

2.09 ct Cushion Cut Peridot, 8.2 x 6.9 mm From Myanmar

1.42 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.1 x 6 mm

7.33 ct Pink Morganite, 13.1 mm Carved From Afghanistan

3.61 ct Loose Marquise Pietersite, 17.9 x 7.2 mm From Namibia

17.48 ct Oval Rose Quartz, 18.1 x 15.1 mm From South Africa

16.68 ct Oval Fossil Coral, 17.6 x 12.6 mm From Indonesia

3.05 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 7.6 x 7.5 mm

5.38 carat Swiss Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 9.2 x 9 mm

0.66 ct Loose Yellow Sapphire, 3.6 x 3.6 mm Princess Cut From Tanzania

14.13 ct Octagon Cut Smoky Quartz, 14.3 x 14.2 mm From Brazil

16.81 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 26.5 x 13.3 mm

0.91 ct Green Sphene, 6.4 x 5.3 mm Oval Cut From Sri Lanka

0.3 carat Pear Shape Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.1 x 3.7 mm

0.65 ct Cushion Cut Color-Change Diaspore, 4.9 x 4.9 mm From Turkey

2.28 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.9 x 7.1 mm

7.85 ct Round Agate, 11.2 mm From Indonesia

13.06 ct Carved Prehnite, 17.4 x 11.4 mm From South Africa

3.27 carat Yellow Citrine, Carved Flower loose Citrine from Brazil, Natural Untreated Gem, 9.8 x 9.2 mm

Gemstone Information

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