Calibrated 8 x 8 mm Square Shape Loose Natural Gemstones from GemS...

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 Square shapes, facet cut and cabochon gems available now in 8 mm x 8 mm 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 meant nor 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

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

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 -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

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Overall Rating -> 10

Excellent site.

Posted By Boru in December, 2023

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Overall Rating -> 10

It was easy to search and find what i wanted

Posted By Gunner in November, 2023

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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

Purchased for my granddaughter she was very pleased with it.

Posted By Charlie in April, 2024

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Overall Rating -> 10

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 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 -> 8

I am currently pleased. I like the layout of the website.

Posted By RayPoppa in January, 2024

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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

Posted By Jf in January, 2024

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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

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

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Overall Rating -> 10

Posted By Papa in December, 2023

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Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

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Gemstones A-Z

Buy Square Shape 8x8 mm Gems

1.54 ct Yellow Diamond, 7.2 mm Diamond Cut From South Africa

9.94 ct Oval Coral, 17.4 x 14.1 mm From Indonesia

2.08 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.2 x 8.9 mm

0.73 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gem, 7 x 4.9 mm

1.47 carat Pear Shape Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 12.2 x 8.1 mm

11.06 ct Oval Rutile Quartz, 20.2 x 11.6 mm From India

43.68 ct Oval Jasper, 34.3 x 24.2 mm From Indonesia

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

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

15.37 ct Baguette Rainbow Moonstone, 19.5 x 10.7 mm From the United States

0.36 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4.1 mm

22.43 ct Cushion Howlite, 26.9 x 16.8 mm From the United States

5.51 ct Black Star Sapphire, 11.1 x 8.6 mm Oval Cut From Thailand

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

16.2 ct Fancy Spectrolite, 26.9 x 15 mm From Finland

0.86 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gems, 4.2 mm

10.37 ct Carved Prehnite, 15.5 x 10.6 mm From South Africa

0.49 ct Loose Orange Sapphire, 5.6 x 4 mm Oval Cut From Tanzania

1.96 ct Yellow Quartz, 8.2 x 7.8 mm Carved From Brazil

1.02 ct Yellow Morganite, 7.9 x 5.9 mm Oval Cut From Afghanistan

1.11 ct Loose Trillion Cut Mystic Quartz, 7 x 7 mm From Brazil

2.88 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9.1 x 9 mm

0.5 ct Loose Yellow Sapphire, 3.3 x 3.3 mm Princess Cut From Tanzania

0.53 ct Yellow Sphalerite, 4.9 x 4.8 mm Trillion Cut From Spain

0.96 ct Yellow Beryl, 7.3 x 7.1 mm Trillion Cut From Madagascar

0.53 ct Loose Orange Sapphire, 4.9 x 4 mm Octagon Cut From Tanzania

4.09 carat Sky Blue Topaz, Princess-Cut loose Topaz from Brazil, Natural Gems, 7 x 6.9 mm

4.08 ct Round Cut Smoky Quartz, 10.6 mm From Brazil

7.17 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 15 x 7 mm

0.29 ct Octagon Cut Iolite, 5 x 2.9 mm From Madagascar

27.23 ct Cushion Fossil Coral, 19.9 x 14.2 mm From Indonesia

15.68 carat Brown Spessartite Garnet, Carved Rose loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 14 x 13.7 mm

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