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 -> 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

Source: Bizrate

Overall Rating -> 10

Great selection

Posted By GHS40 in December, 2023

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Overall Rating -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

Source: Bizrate

Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

Source: Bizrate

Overall Rating -> 10

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

Very good, very fast, everything as described.

Posted By B in October, 2023

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

Source: Bizrate

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

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

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

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

Source: Bizrate

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Gemstones A-Z

Buy Square Shape 8x8 mm Gems

205.8 ct Round Jasper, 55.7 mm From Indonesia

3.22 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gems, 7 x 6.9 mm

2.51 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 7 mm

0.66 carat Pear Shape Mystic Quartz, loose Certified Mystic Quartz from Brazil, Natural Gem, 7.1 x 5 mm

0.52 ct Loose White Sapphire, 4.8 mm Round Cut From Tanzania

28.07 ct Cushion Jasper, 21.6 x 13.5 mm From Indonesia

4.4 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 3.9 mm

1.56 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10.1 x 8.1 mm

0.27 ct Oval Chrysoberyl Cat's Eye, 3.7 x 3.6 mm From Sri Lanka

3.72 ct Green Agate, 18.4 x 9.4 mm Carved From India

1.41 ct Blue Kyanite, 6.7 mm Round Cut From Nepal

10.07 ct Orange Moonstone, 14 mm Round Cut From India

0.56 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.1 x 4.1 mm

7.86 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

4.75 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 11.9 x 8.9 mm

5.88 ct Asscher Cut Rose Quartz, 11 x 11 mm From South Africa

4.54 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.2 x 4.2 mm

55.16 ct Druzy Citrine, 31.4 x 20.2 mm From Uruguay

3.95 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 4.1 mm

20.14 ct Oval Checkerboard Labradorite, 25.4 x 18.4 mm From Madagascar

0.65 ct Yellow Beryl, 6.8 x 5.1 mm Oval Cut From Madagascar

1.48 ct Loose Orange Moonstone, 8 x 7.9 mm Trillion Cut From India

0.64 carat Blue Sapphire, Pear Shape loose Sapphire from Sri Lanka, Natural Gem, 6.1 x 4.9 mm

10.29 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 19.8 x 9.1 mm

2.33 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 9.8 x 7.3 mm

4.31 carat Sky Blue Topaz, Princess-Cut loose Topaz from Brazil, Natural Gems, 7.2 x 7.2 mm

1.18 ct Loose Cushion Cut Sapphire, 6.5 x 4.9 mm From Madagascar

1.12 ct Blue Kyanite, 7.2 x 5.2 mm Oval Cut From Nepal

4.55 ct Fancy Fire Agate, 10.7 x 10.2 mm From Mexico

2.12 carat Blue Topaz, loose Topaz from Brazil, Natural Gems, 7.2 x 5 mm

3.83 ct Round Checkerboard Smoky Quartz, 8.2 mm From Brazil

1.85 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 8.8 x 6.9 mm

Gemstone Information

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Gemstone EDUCATION

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