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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Gemstone Information

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Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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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 enjoyed browsing though different varieties of rubies. I felt that the experience was simple and easy to navigate!

Posted By Daws in July, 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

Source: Bizrate

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

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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 -> 9

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel in July, 2023

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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

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Overall Rating -> 10

Love Gem select. great gems for the price. Can't beet them

Posted By Apps in September, 2023

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Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

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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

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

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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

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

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Gemstones A-Z

Buy Round Shape 8 mm Gems

3.06 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.1 x 5.1 mm

12.1 ct Loose Round Agate, 13.6 mm From Indonesia

9.27 ct Yellow Quartz, 19.2 x 12.8 mm Marquise Concave Cut From Brazil

39.36 ct Oval Tiger's Eye Matrix, 32.5 x 18.8 mm From Mexico

4.18 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 12.1 x 6 mm

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

6.08 ct Octagon Concave Cut Smoky Quartz, 12 x 12 mm From Brazil

1 carat Blue Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 4.6 mm

8.1 ct Odd Shaped Hemimorphite Druzy, 13.6 x 11.6 mm From Congo

2.78 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 10 mm

3.09 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 10 mm

1.96 ct Oval Strawberry Quartz, 8.2 x 6.1 mm From Russia

0.43 ct Loose Purple Sapphire, 6 x 4.1 mm Oval Cut From Tanzania

2.4 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.8 x 4.7 mm

28.62 ct Oval Fossil Coral, 21.1 x 13.4 mm From Indonesia

0.73 carat Purple Sapphire, Pear Shape loose Sapphire from Madagascar, Natural Gem, 6.7 x 4.6 mm

3.26 ct Multicolor Mystic Quartz, 11.1 x 9 mm Oval Concave Cut From Brazil

57.67 ct Baguette Hematite, 21.1 x 15.9 mm From Brazil

0.89 carat Teal Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.3 x 5.2 mm

0.59 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4 mm

8.59 ct Octagon Cut Smoky Quartz, 12.3 x 12.3 mm From Brazil

31.11 ct Brown Moonstone, 30.1 x 19.5 mm Carved From India

5.44 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 11.7 mm

38.55 ct Oval Jasper, 35.4 x 21.4 mm From Indonesia

1.56 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

1.33 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 7.7 x 5 mm

1.2 ct Oval Cut Chrysoberyl, 7.7 x 5.6 mm From Sri Lanka

3.2 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 8 x 6.1 mm

12.77 ct Yellow Quartz, 17.6 x 13.8 mm Carved From Brazil

1.47 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 9.1 x 7 mm

22.02 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 20.1 x 15.1 mm

1.07 ct Loose Pink Tourmaline, 6.1 mm Round Cabochon From Mozambique

Gemstone Information

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