Calibrated 8 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 8 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

I am excited for my first order, search tools were a great help to find the sapphire I needed for my next project! Thank you

Posted By Sue in April, 2023

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

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Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

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Overall Rating -> 10

The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023

Source: Bizrate

Overall Rating -> 9

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024

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Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 2023

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Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

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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.

Posted By Bobk in February, 2024

Source: Bizrate

Overall Rating -> 10

I have received emails for about a year and today is the condition that had me decide on the purchase

Posted By Tim in April, 2024

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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

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

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Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

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Overall Rating -> 10

Easy to use,I have spent many hours looking at the site

Posted By Skip in November, 2023

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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 -> 9

Easy to use. Limited supply of higher quality gemstones.

Posted By Newfguy in February, 2024

Source: Bizrate

Gemstones A-Z

Buy Round Shape 8 mm Gems

19.64 ct Oval Jasper, 18.1 x 13.1 mm From Indonesia

0.24 ct Blue Apatite, 3.6 mm Round Cut From Madagascar

2.58 ct Round Onyx, 7 mm From Sri Lanka

1 ct Oval Cut Peridot, 7.7 x 5.5 mm From China

1.59 ct Oval Cut Peridot, 7.1 x 5 mm From China

0.88 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7.1 x 5.2 mm

3.47 carat Pear Shape Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gems, 5.2 x 2.9 mm

1.09 carat Pear Shape Mystic Quartz, loose Certified Mystic Quartz from Brazil, Natural Gem, 8 x 6 mm

1.28 ct Round Cat's Eye Moonstone, 7.1 mm From India

1.91 ct Blue Apatite, 5.9 x 4 mm Oval Cut From Madagascar

7.3 ct White Moonstone, 9 mm Round Cut From India

9.37 ct Oval Star Ruby, 13.2 x 10.9 mm From Madagascar

1.75 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gems, 5.9 x 4.3 mm

5.06 ct Yellow Quartz, 13.2 x 8 mm Marquise Concave Cut From Brazil

11.7 ct Baguette Tiger's Eye, 18.1 x 13.3 mm From Thailand

2.77 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7 mm

0.52 carat Yellow Citrine, Cushion loose Citrine from Brazil, Natural Untreated Gem, 5.2 x 5.1 mm

46.05 ct Oval Tiger's Eye Matrix, 35 x 20.8 mm From Mexico

0.94 ct Cushion Cut Color-Change Diaspore, 7.7 x 4.3 mm From Turkey

2.61 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.9 x 4.9 mm

1.4 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

4.6 ct Oval Coral, 14.1 x 11 mm From Indonesia

1.29 ct Yellow Beryl, 8.2 x 7.9 mm Trillion Cut From Madagascar

23.21 ct Green Jadeite, 25.5 x 21 mm Oval Cut From Myanmar

1.05 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.1 x 4 mm

4.11 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 4.1 mm

3.5 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 9 mm

0.63 ct Pink Spinel, 5.1 x 4.5 mm Cushion Cut From Tanzania

23.42 ct Pencil Cut Tiger's Eye, 33.4 mm From Thailand

1.17 ct Oval Chocolate Opal, 9.9 x 6.7 mm From Ethiopia

0.66 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 7.1 x 5 mm

3.03 ct Marquise Pietersite, 17.6 x 6 mm From Namibia

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