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

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023

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Overall Rating -> 9

The selection and filtering is a little overwhelming, but that's only because there is so much to choose from.

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Overall Rating -> 10

I FOUND WHAT I WANT IT

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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.

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Overall Rating -> 10

it was good

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Overall Rating -> 10

Excellent site.

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Overall Rating -> 10

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

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Overall Rating -> 10

love yall

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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.

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Overall Rating -> 10

Great site

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Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

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Overall Rating -> 10

all good

Posted By John in December, 2023

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Overall Rating -> 10

I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.

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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 -> 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.

Posted By Sparkle in March, 2024

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Gemstones A-Z

Buy Round Shape 8 mm Gems

1.35 carat Marquise Cut Opal, loose Certified Opal from Australia, Natural Untreated Gem, 16.1 x 5.8 mm

0.32 ct Baguette Cut Iolite, 5.1 x 3 mm From Madagascar

12.8 ct Asscher Cut Rose Quartz, 14.4 x 14.2 mm From South Africa

0.54 ct Loose Yellow Sapphire, 5.9 x 4 mm Oval Cut From Tanzania

2.55 ct Round Cat's Eye Scapolite, 8.9 mm From Madagascar

9.22 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 11.1 x 9 mm

6.03 ct Yellow Quartz, 12 x 11.8 mm Asscher Cut From Brazil

2.95 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 11.1 x 10.4 mm

0.97 ct Octagon Cut Color-Change Diaspore, 7 x 4.5 mm From Turkey

0.85 ct Octagon Cut Color-Change Diaspore, 5.6 x 5.3 mm From Turkey

3.69 ct Round Checkerboard Smoky Quartz, 8 mm From Brazil

2.4 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.1 x 7.1 mm

3.26 ct Orange Moonstone, 7.2 x 7.1 mm Square Cut From India

2.38 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.2 x 3.2 mm

38.76 ct Cushion Jasper, 30 x 24.5 mm From Indonesia

9.72 ct Round Cut Smoky Quartz, 14.7 mm From Brazil

3.31 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7.1 x 5.2 mm

3.12 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.5 x 9.2 mm

2.61 ct Square Cut Rainbow Moonstone, 3.1 x 3 mm From India

44.28 ct Baguette Psilomelane Dendrite, 36.2 x 19 mm From Mexico

46.72 ct Drilled Sphere Howlite, 14.5 mm From the United States

2.4 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 6.9 x 5.2 mm

2.26 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.1 x 9 mm

0.14 ct Brown Diamond, 3.4 mm Diamond Cut From India

1.83 ct Round Cut Strawberry Quartz, 7.9 mm From Russia

1.56 ct Oval Cut Andalusite, 5.1 x 3.1 mm From Brazil

1.53 ct Loose White Sapphire, 4.4 mm Diamond Cut From Madagascar

1.11 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gems, 4.8 mm

3.84 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 3.9 mm

4.26 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9.7 x 7.8 mm

3.06 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11 x 9 mm

4 carat Brown Mali Garnet, Oval loose Mali Garnet from Mali, Natural Untreated Gems, 6.5 x 5.2 mm

Gemstone Information

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