Calibrated 4 x 4 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 4 mm x 4 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

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 2023

Source: Bizrate

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

this was very easy im exited to get my order

Posted By Mr. in April, 2024

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Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 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 -> 9

Good interaction with site

Posted By Brick in September, 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

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

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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

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

Source: Bizrate

Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 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 -> 9

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

Posted By Mr. Bezel in July, 2023

Source: Bizrate

Overall Rating -> 10

Great experience! First time buyer

Posted By Todi89 in February, 2024

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Gemstones A-Z

Buy Square Shape 4x4 mm Gems

3.68 carat Red Zircon, Oval loose Zircon from Tanzania, Natural Untreated Gem, 10.2 x 7.2 mm

1.21 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7 x 5 mm

6.13 ct Oval Star Moonstone, 13 x 11 mm From India

1.25 ct Orange Moonstone, 5.3 x 5.2 mm Trillion Cut From India

1.62 carat White Opal, Oval loose Opal from Australia, Natural Untreated Gem, 10.1 x 7.9 mm

0.99 carat Orange Sunstone, Oval loose from India, Natural Untreated Gem, 8 x 6.2 mm

1.9 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gem, 8 x 6 mm

0.95 ct Blue Kyanite, 7.1 x 4.8 mm Oval Cut From Nepal

8.34 ct Round Quartz Cat's Eye, 12.4 mm From India

8.18 ct Round Agate, 12.3 mm From Indonesia

13.11 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 18.2 x 13 mm

3.97 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm

16.5 ct Oval Larimar, 20.2 x 15.2 mm From the Dominican Republic

0.57 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gem, 5.1 x 5 mm

1.64 ct Loose Pink Tourmaline, 5.9 mm Round Cabochon From Mozambique

23.67 ct Pencil Cut Jasper, 38.8 x 9.8 mm From Indonesia

1.51 ct Green Sphene, 7.6 x 6.1 mm Oval Cut From Sri Lanka

2.09 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.2 x 8.1 mm

0.43 carat Pear Shape Emerald, loose Certified Emerald from Colombia, Natural Gem, 6 x 4.1 mm

2.68 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 6.9 x 5 mm

4.92 ct Blue Star Sapphire, 7 x 5.2 mm Oval Cut From Thailand

13.4 carat Carved Fish Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 21.4 x 13.4 mm

0.23 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.4 mm

35.42 ct Oval Fossil Coral, 21.8 x 15.2 mm From Indonesia

21.61 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 19.9 x 15.3 mm

1.58 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gems, 6 x 5 mm

0.79 ct Oval Cut Color-Change Diaspore, 6.5 x 4.5 mm From Turkey

3.05 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 10.6 x 7.1 mm

1.75 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5.2 mm

13.73 ct Oval Quartz With Hedenbergite, 18.9 x 12.9 mm From Russia

1.58 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.1 x 8 mm

0.45 ct Square Cut Color-Change Diaspore, 4.6 x 4.5 mm From Turkey

Gemstone Information

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