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 -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 2023

Source: Bizrate

Overall Rating -> 10

great. thank you

Posted By Carrotroller in July, 2023

Source: Bizrate

Overall Rating -> 10

this was very easy im exited to get my order

Posted By Mr. in April, 2024

Source: Bizrate

Overall Rating -> 10

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

Posted By Phoenix in February, 2024

Source: Bizrate

Overall Rating -> 10

Found the stone I wanted which was delivered quickly and met expectations.

Posted By GemGrammy in January, 2024

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

Posted By Nikki J in September, 2023

Source: Bizrate

Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

Posted By Ktreva52 in February, 2024

Source: Bizrate

Overall Rating -> 9

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

Posted By Mr. Bezel in July, 2023

Source: Bizrate

Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to navigate and I hope that the gem is as nice as the picture

Posted By 1 in April, 2024

Source: Bizrate

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Gemstones A-Z

Buy Round Shape 8 mm Gems

5.21 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.8 x 5 mm

0.92 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.4 x 5.1 mm

25.09 ct Oval Quartz With Marcasite, 25.3 x 17.2 mm From Brazil

1.64 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.2 x 5.1 mm

2.17 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7.2 x 5.2 mm

21.72 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.2 x 18 mm

5.5 ct Black Star Sapphire, 11.1 x 8.8 mm Oval Cut From Thailand

15.55 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 22.6 x 16.9 mm

5.76 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 10.1 x 8.1 mm

0.81 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.1 x 5 mm

38.32 ct Oval Jasper, 35.4 x 24.3 mm From Indonesia

41.42 ct Yellow Quartz, 26.3 x 14.9 mm Octagon Cut From Brazil

11.35 ct Oval Pietersite, 27.3 x 12.2 mm From Namibia

0.7 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8 x 4 mm

29.59 ct Baguette Quartz With Marcasite, 28.1 x 14.9 mm From Brazil

1.15 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.8 x 3 mm

1.51 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 5.9 x 5.9 mm

6.99 ct Round Rutile Quartz, 12.2 mm From India

3.2 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 8.3 x 7.5 mm

1.9 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5 x 3.1 mm

7.31 ct Oval Tiger's Eye, 13.7 x 9.8 mm From Thailand

14.43 ct Oval Cat's Eye Aquamarine, 17.5 x 10.5 mm From Madagascar

5.91 ct Oval Larimar, 14 x 10.2 mm From the Dominican Republic

0.71 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 7.1 x 5 mm

1.09 ct Octagon Cut Peridot, 7.1 x 5.2 mm From China

1.75 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9.3 x 7.1 mm

0.65 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 7 x 5 mm

15.01 ct Oval Nuummite, 19.7 x 11.5 mm From India

6.3 carat Black Tourmaline, Round loose Tourmaline from Mozambique, Natural Untreated Gem, 11.8 mm

10.98 ct Oval Quartz With Marcasite, 17.4 x 12.8 mm From Brazil

0.72 carat Pink Malaya Garnet, Cushion loose Malaya Garnet from Tanzania, Natural Untreated Gem, 6 x 4.1 mm

8.91 ct Oval Pietersite, 13.9 x 10.1 mm From Namibia

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT