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 -> 9

Everything was good but since I am still new I was surprised at how small the stones where.

Posted By Js in May, 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.

Posted By Papa in December, 2023

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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!

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Posted By Samlovesgems777 in August, 2023

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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 -> 8

Found on a search engine. Scanned inventory and made a small purchase.

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Overall Rating -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 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.

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i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

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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.

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Gemstones A-Z

Buy Round Shape 7 mm Gems

75.76 carat Blue Topaz, Oval Concave Cut loose Topaz from Brazil, Natural Gem, 28.7 x 24.1 mm

10.5 ct Yellow Quartz, 15.5 x 15.1 mm Carved From Brazil

3.41 ct Diamond Cut Andalusite, 3.6 mm From Brazil

2.3 ct Orange Sunstone, 8.6 mm Round Cut From India

0.79 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.2 x 5.3 mm

0.32 ct Loose Purple Sapphire, 5.1 x 4 mm Oval Cut From Tanzania

1.39 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gem, 9.9 x 5.1 mm

1.44 ct Blue Apatite, 5.1 x 4 mm Oval Cut From Madagascar

3.98 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4.1 mm

1.43 ct Loose Yellow Sapphire, 6.7 x 5.3 mm Cushion Cut From Tanzania

2.82 carat Red Spessartite Garnet, Briolette loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 9.5 mm

4.92 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 4.1 x 4.1 mm

0.85 ct Loose Pink Sapphire, 6.1 x 4.1 mm Oval Cut From Madagascar

7.16 ct Oval Cat's Eye Opal, 13.4 x 11.5 mm From Madagascar

1.08 ct Purple Spinel, 6.3 x 5.8 mm Cushion Cut From Tanzania

1.91 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.2 x 7.1 mm

1.44 ct Orange Sphalerite, 6.7 x 5.7 mm Oval Cut From Spain

3.48 ct Loose Baguette Labradorite, 9.2 x 7 mm From Madagascar

1.12 ct Yellow Beryl, 8.1 x 6 mm Oval Cut From Madagascar

15.1 ct Asscher Cut Rose Quartz, 15.6 x 15.5 mm From South Africa

0.62 ct Loose Yellow Sapphire, 4.8 mm Round Cut From Tanzania

1.23 carat Orange Hessonite Garnet, Baguette Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.3 x 5 mm

2.2 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.7 x 5 mm

7.22 ct Round Cut Strawberry Quartz, 10.1 mm From Russia

1.24 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 7.3 x 5.4 mm

13.43 carat Pear Rutile Quartz, loose Certified Rutile Quartz from India, Natural Untreated Gem, 18.2 x 13.2 mm

20.28 ct Oval Cut Nuummite, 19.6 x 15 mm From India

2.1 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.6 x 6.7 mm

2.69 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9 mm

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

2.26 ct Cushion Cut Peridot, 7.9 x 7.4 mm From Myanmar

7.98 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 5.1 x 5 mm

Gemstone Information

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