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 -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

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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

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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Overall Rating -> 10

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Overall Rating -> 9

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Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

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Overall Rating -> 10

Very detailed and great pictures

Posted By Alexandrite in November, 2023

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Overall Rating -> 10

My only complaint is that there are so many beautiful and affordable stones that I get distracted from what I planned to order.

Posted By Phoenix in March, 2024

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Overall Rating -> 10

Everything fine.

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Overall Rating -> 10

Easy to find products I want. I've ordered several times from gem select and never any problems. Will order again. Thank you.

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Overall Rating -> 10

I particularly like information about product provided with purchase.

Posted By Dick in May, 2023

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Overall Rating -> 10

The website is easy to navigate and has a great selection. I am an amateur silver smith casting jewelry with stones

Posted By Jrplunk in April, 2024

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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

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

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Overall Rating -> 10

Wonderful selection of gems to choose from. Have made many purchases and was only slightly disappointed once.

Posted By Teemo in February, 2024

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Gemstones A-Z

Buy Round Shape 8 mm Gems

1.78 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3.1 mm

1.62 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.2 x 4.2 mm

2.19 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 7.3 mm

0.56 carat Green Sapphire, Oval loose Sapphire from Tanzania, Natural Gems, 4.3 x 3.3 mm

0.72 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6 x 5.1 mm

1.74 ct Violet Spinel, 6.9 x 6.6 mm Cushion Cut From Tanzania

0.63 ct Loose Yellow Sapphire, 5.3 x 5.2 mm Trillion Cut From Tanzania

6.94 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 14.9 x 6.9 mm

5.53 ct Brown Moonstone, 12.4 x 12.3 mm Carved From India

6.31 carat Yellow Citrine, Emerald Cut loose Citrine from Bolivia, Natural Untreated Gem, 13.8 x 9.8 mm

1.9 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 17.7 x 3.7 mm

0.45 ct Loose Orange Sapphire, 5 x 4.1 mm Oval Cut From Madagascar

2.78 ct Blue Star Sapphire, 6.1 mm Round Cut From Thailand

22.32 ct Oval Howlite, 28 x 16.1 mm From the United States

4.75 carat Swiss Blue Topaz, Round loose Topaz from Brazil, Natural Gems, 8.1 mm

13.87 carat Cameo Mother of Pearl, loose Certified Mother of Pearl from China, Natural Gem, 25.1 mm

42.02 ct Oval Coral, 36.2 x 23.2 mm From Mexico

1.42 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.5 x 6.2 mm

0.68 ct Loose Yellow Sapphire, 4.3 x 4.3 mm Square Cut From Tanzania

10.76 ct Fancy Pietersite, 19.9 x 13.5 mm From China

1.61 ct Pink Morganite, 7.5 mm Round Cut From Afghanistan

1.39 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6.1 mm

1.63 carat Green Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 20.6 x 3.2 mm

1.16 ct Cushion Cut Color-Change Diaspore, 7.7 x 5.5 mm From Turkey

0.91 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 11.2 x 4.7 mm

2.63 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9.5 mm

1.64 ct Loose Orange Hessonite Garnet, 7.2 x 5.6 mm Octagon Cut From Madagascar

2.43 carat White Zircon, Diamond-Cut loose Zircon from Myanmar, Natural Gems, 5.8 mm

8.02 ct Blue Green Grandidierite, 14.7 x 10.9 mm Oval Cut From Madagascar

1.99 ct Loose Orange Hessonite Garnet, 8.2 x 6.2 mm Cushion Cut From Madagascar

2.62 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5.1 mm

0.62 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.5 x 4.5 mm

Gemstone Information

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POLICIES

WHO ARE WE?

Gemstone EDUCATION

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