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

No issues at all. It was great.

Posted By LJXK in May, 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

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Overall Rating -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

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Overall Rating -> 10

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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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

Fine. All emails answered. Excellent service. Nice discount added for orders. Briefly, a very good experience.

Posted By C.J. in February, 2024

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Overall Rating -> 10

Very good, very fast, everything as described.

Posted By B in October, 2023

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Overall Rating -> 10

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

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Overall Rating -> 10

Great site

Posted By Lord of Bananas 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.

Posted By Papa in December, 2023

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Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 2023

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Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

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Overall Rating -> 10

I’ve enjoyed purchasing stones from this site. It’s convenient and fairly priced.

Posted By Chico in May, 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

Great selection

Posted By GHS40 in December, 2023

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Gemstones A-Z

Buy Round Shape 8 mm Gems

6.64 ct Oval Prehnite, 7.3 x 6.3 mm From South Africa

0.51 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6 x 4 mm

22.88 ct Oval Cut Rose Quartz, 20.7 x 16.2 mm From South Africa

18.79 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 19.2 x 16.1 mm

5.8 ct Round Cut Smoky Quartz, 12 mm From Brazil

2.24 ct Orange Sunstone, 8.9 mm Round Cut From India

2.82 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.3 x 9.2 mm

1.27 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4 x 3.3 mm

0.92 carat Blue Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.2 x 5.2 mm

1.35 ct Oval Sillimanite Cat's Eye, 7.9 x 4.6 mm From Madagascar

1.12 ct Purple Spinel, 6.7 x 5.4 mm Cushion Cut From Tanzania

8.82 carat Pear Dendritic Agate, loose Certified Dendritic Agate from India, Natural Untreated Gem, 18 x 13.2 mm

7.35 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.1 x 11.6 mm

26.04 carat Green Aventurine, Pear loose Aventurine from Brazil, Natural Untreated Gem, 30.3 x 22.8 mm

1.24 ct Oval Cut Kornerupine, 8.2 x 5.4 mm From Sri Lanka

63.83 ct Oval Charoite, 41.6 x 27.6 mm From Russia

0.56 ct Loose Purple Sapphire, 6.3 x 5.2 mm Odd Shaped From Tanzania

3.71 ct Loose Oval Concave Cut Mystic Quartz, 9.1 x 7 mm From Brazil

1.83 carat Pink Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 7.1 mm

2.76 ct Oval Cut Kornerupine, 6.5 x 4.9 mm From Sri Lanka

11.56 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 22 x 8.4 mm

0.91 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.2 x 4.2 mm

2.92 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 12.5 x 10 mm

2.49 ct Yellow Sphene, 8.2 x 7.2 mm Oval Cut From Sri Lanka

5.3 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 10 x 8.1 mm

0.5 carat Yellow Sapphire, Heart loose from Tanzania, Natural Gem, 4.5 x 4.4 mm

5.31 ct Oval Malachite, 10.2 x 8.2 mm From Congo

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

1.75 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.2 x 4.1 mm

13.47 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 14.1 x 10.1 mm

8 ct Cushion Pietersite, 14 x 12.8 mm From Namibia

44.41 ct Pencil Cut Strawberry Quartz, 39 x 12.4 mm From Russia

Gemstone Information

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