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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I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

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Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 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.

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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!

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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.

Posted By Ray in January, 2024

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Great selection of various gems, easy to navigate site

Posted By Josh in August, 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

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

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Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

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Overall Rating -> 10

I have received emails for about a year and today is the condition that had me decide on the purchase

Posted By Tim in April, 2024

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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.

Posted By Iggywiggly in January, 2024

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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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It went well

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I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

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Overall Rating -> 10

Love the variety of stones, sizes and the prices

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Gemstones A-Z

Buy Square Shape 8x8 mm Gems

25.34 ct Black Spinel, 17.7 x 8.2 mm Baguette Rose Cut From Thailand

3.73 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 10 x 8.2 mm

0.91 carat Opal, loose Certified Opal from Ethiopia, Natural Gem, 8.9 x 7.4 mm

4.2 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.7 x 4.9 mm

68.84 ct Square Malachite, 25 x 24.3 mm From Congo

2.18 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.2 x 5.1 mm

2.94 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.2 x 4.2 mm

11.45 ct Loose Baguette Lapis Lazuli, 15.4 x 13.1 mm From Afghanistan

2.91 ct Oval Opal Doublet, 13 x 9.2 mm From Australia

0.78 carat Yellow Citrine, Heart loose Citrine from Brazil, Natural Untreated Gem, 6.1 x 6 mm

0.48 ct Loose Blue Sapphire, 4 x 4 mm Cushion Cut From Madagascar

11.65 ct Green Jadeite, 18.7 x 13.9 mm Oval Cut From Myanmar

3.06 ct Blue Star Sapphire, 9 x 7 mm Oval Cut From Thailand

12.42 ct Cushion Chrysocolla, 23.5 x 16.3 mm From Australia

2.08 ct Loose Orange Moonstone, 9.2 x 7.1 mm Cushion Cut From India

1.98 ct Round Labradorite, 6.1 mm From Madagascar

0.32 ct Oval Cut Kornerupine, 3.9 x 2.9 mm From Sri Lanka

3.31 ct Green Apatite, 9 x 8.8 mm Asscher Cut From Madagascar

1.18 ct Oval Cut Peridot, 7.9 x 5.9 mm From China

11.81 ct Carved Rose Tiger's Eye, 15.5 x 15.4 mm From Thailand

1.6 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 8.1 mm

14.05 ct Oval Howlite, 23.2 x 16 mm From the United States

0.28 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.8 mm

1.19 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.1 x 5.7 mm

0.56 ct Loose Purple Sapphire, 5.8 x 4 mm Oval Cut From Madagascar

1.98 carat Cushion Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.7 x 6.9 mm

0.5 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 7.7 x 3.2 mm

0.58 ct Loose Pink Sapphire, 7 x 5 mm Odd Shaped From Tanzania

0.44 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 8.6 x 3.8 mm

0.43 carat Round Cabochon Emerald, loose Certified Emerald from Colombia, Natural Gem, 4.5 mm

26.66 carat Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 17.9 x 14.8 mm

2.69 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9 mm

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