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

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Overall Rating -> 10

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

The gems were as described, which is kind of rare these days. I am happy with the purchase, and delevery on time.

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Overall Rating -> 9

I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

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Overall Rating -> 10

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 2023

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Overall Rating -> 9

So many gorgeous stones! The only "complaint" I have is it's difficult to visualize sizes in mm. Perhaps some way to compare in inches?It has been a long time since I bought stones from Gem select, but the process wasn't too difficult.

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Posted By Mr. Bezel in July, 2023

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Overall Rating -> 10

was just windowshopping and spotted a couple "Very Uncommons", a tsavorite & a demantoid garnet that were both in a size I was looking for, & that I could very easily pay for -- so figured I would grab the tsavo ASAP and got the demantoid to accompany so they wouldn't be lonely.

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Gemstones A-Z

Buy Round Shape 8 mm Gems

1.66 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

18.97 ct Baguette Maw-Sit-Sit, 14.8 x 14.1 mm From Myanmar

5.21 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gems, 9.1 x 7.1 mm

1.98 ct Oval Cut Golden Beryl, 9.3 x 7.2 mm From Madagascar

0.45 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.2 x 4.1 mm

5.06 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gem, 10 x 10 mm

6.66 ct Oval Malachite, 12.5 x 9.4 mm From Congo

4.26 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 7.1 mm

4.37 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.1 x 9.9 mm

1.49 ct Oval Black Opal, 6.1 x 4.2 mm From Ethiopia

2.71 ct Marquise Concave Cut Smoky Quartz, 17.7 x 7.1 mm From Brazil

3.13 ct Green Sphene, 7.4 x 5.9 mm Oval Cut From Sri Lanka

6.36 ct Green Amazonite, 7.2 x 7.2 mm Cushion Cut From Madagascar

0.86 ct Octagon Cut Color-Change Diaspore, 6 x 4.8 mm From Turkey

3.22 ct Oval Cut Golden Beryl, 9.1 x 6.9 mm From Madagascar

37.05 ct Oval Tiger's Eye Matrix, 34 x 20 mm From Mexico

1.29 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 21.6 x 2.9 mm

1.03 ct Green Sphene, 7 x 5.2 mm Oval Cut From Sri Lanka

3.81 ct Loose Pear Dendritic Agate, 14.1 x 10.3 mm From India

1.76 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 6.9 x 6.7 mm

7.04 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 12.1 x 10 mm

1.96 ct Round Onyx, 5.5 mm From Sri Lanka

1.21 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gems, 7.2 x 5.2 mm

5.84 carat London Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 11 x 10.7 mm

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

2.05 ct Loose Orange Moonstone, 9.1 x 7.1 mm Cushion Cut From India

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

1.43 ct Round Cut Andalusite, 3.6 mm From Brazil

19.75 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 23.6 x 18.3 mm

1.02 ct Yellow Sphene, 6.6 x 5.3 mm Oval Cut From Sri Lanka

5.15 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14 x 6.9 mm

7.14 ct Marquise Pietersite, 26 x 8.9 mm From Namibia

Gemstone Information

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