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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Gemstone Information

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Overall Rating -> 10

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

Overall Rating -> 10

Wonderful selection of gems to choose from. Have made many purchases and was only slightly disappointed once.

Posted By Teemo in February, 2024

Source: Bizrate

Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 8

I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.

Posted By Mark in March, 2024

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

Source: Bizrate

Overall Rating -> 10

Easy to use website, made it very easy to buy. Will shop here again.

Posted By Bjorn in January, 2024

Source: Bizrate

Overall Rating -> 9

My first purchase went well. I will purchase more gems in the future.

Posted By NoHalalAl in March, 2024

Source: Bizrate

Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

Source: Bizrate

Overall Rating -> 10

Easy to use as always and in all steps from opening site to paying.

Posted By Pete in February, 2024

Source: Bizrate

Overall Rating -> 10

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023

Source: Bizrate

Overall Rating -> 10

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Ray in December, 2023

Source: Bizrate

Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

Overall Rating -> 10

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

Source: Bizrate

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Gemstones A-Z

Buy Round Shape 7 mm Gems

8.22 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 13.9 x 8.1 mm

2.07 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.4 x 7.1 mm

6.44 carat Pink Mystic Topaz, Pear Shape loose Mystic Topaz from Brazil, Natural Gem, 14.1 x 10.1 mm

2.2 carat Blue Sapphire, Oval loose Sapphire from Sri Lanka, Natural Gem, 8.7 x 6 mm

21.97 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 20 x 15.2 mm

2.39 ct Oval Sillimanite Cat's Eye, 7.7 x 5.1 mm From Madagascar

4.17 ct Round Cut Smoky Quartz, 10.9 mm From Brazil

14.11 ct Baguette Tiger's Eye, 14.3 x 10.2 mm From Thailand

3.1 ct Loose Round Pietersite, 9 mm From Namibia

0.46 ct Loose Orange Sapphire, 6 x 4.1 mm Oval Cut From Tanzania

1.86 carat Pear Shape Rainbow Moonstone, loose Certified Rainbow Moonstone from India, Natural Untreated Gems, 5.1 x 4.9 mm

2.88 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 9.3 x 6 mm

1.63 ct Marquise Cut Peridot, 7 x 3.6 mm From China

2.59 carat Yellow Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gem, 15 x 6.9 mm

23.94 ct Cushion Fossil Coral, 18.5 x 14.1 mm From Indonesia

15.68 carat Round Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gem, 19.1 mm

0.51 ct Loose Purple Sapphire, 7.1 x 5 mm Odd Shaped From Madagascar

7.94 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 14 x 7.9 mm

0.8 ct Loose Purple Sapphire, 6 x 5.1 mm Oval Cut From Madagascar

3.63 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 5.5 mm

23.4 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 17.7 x 14.6 mm

0.83 ct Marquise Cut Color-Change Diaspore, 9.8 x 4.1 mm From Turkey

5.23 ct Round Concave Cut Rose Quartz, 12 mm From Brazil

1.96 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.9 x 4.1 mm

14.65 carat Swiss Blue Topaz, Cushion loose Topaz from Brazil, Natural Gem, 16.5 x 9.3 mm

3.57 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 10.1 x 8.2 mm

3.17 ct Round Onyx, 7.3 mm From Sri Lanka

2.77 ct Fancy Fire Agate, 14.2 x 8.5 mm From Mexico

0.56 ct Loose Yellow Sapphire, 4.6 x 4.6 mm Heart Cut From Tanzania

10.53 ct Ball Agate, 11.2 mm From Indonesia

16.1 ct Trillion Chalcedony, 22.2 x 21.2 mm From Brazil

1.84 ct Oval Cut Golden Beryl, 8.1 x 6.1 mm From Madagascar

Gemstone Information

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Gemstone EDUCATION

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