Calibrated 4 x 4 mm Trillion Shape Loose Natural Gemstones from Ge...

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 Trillion 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 -> 9

The selection and filtering is a little overwhelming, but that's only because there is so much to choose from.

Posted By Kasper in June, 2023

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Overall Rating -> 10

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024

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Overall Rating -> 10

Great experience! First time buyer

Posted By Todi89 in February, 2024

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Overall Rating -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

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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

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Overall Rating -> 10

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

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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

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Overall Rating -> 10

Great selection and excellent website.

Posted By JBW in October, 2023

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Overall Rating -> 9

Easy to use. Limited supply of higher quality gemstones.

Posted By Newfguy in February, 2024

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Overall Rating -> 10

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

Great selection, I love your site! Great product visibility, information, etc.

Posted By John in February, 2024

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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

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

Easy to navigate

Posted By G Funk in December, 2023

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Overall Rating -> 10

I was pleased with the selection of gems, the ease of navigating, and the smooth checkout

Posted By JamesMichael781 in September, 2023

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Gemstones A-Z

Buy Trillion Shape 4x4 mm Gems

3.94 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5.1 mm

2.28 ct Orange Moonstone, 7.1 x 7 mm Square Cut From India

3.37 ct Blue Green Grandidierite, 11.6 x 8.8 mm Oval Cut From Madagascar

4.84 ct Oval Cat's Eye Opal, 13.2 x 8.1 mm From Madagascar

1.33 ct Oval Sillimanite Cat's Eye, 6.3 x 5.9 mm From Madagascar

1.6 ct Yellow Beryl, 8 mm Round Cut From Madagascar

1.55 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.3 x 3.5 mm

1.68 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gem, 6.8 mm

3.5 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 11.2 x 9.1 mm

1.69 ct Yellow Beryl, 8.1 mm Round Cut From Madagascar

2.23 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 6.1 mm

2.07 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.9 x 4.8 mm

0.76 ct Loose White Sapphire, 4.4 mm Diamond Cut From Madagascar

17.01 carat Pear Rainbow Moonstone, loose Certified Rainbow Moonstone from the United States, Natural Untreated Gem, 24.6 x 18.1 mm

0.76 ct Oval Sillimanite Cat's Eye, 7.3 x 4.9 mm From Madagascar

1.09 ct Blue Kyanite, 6.9 x 4.9 mm Oval Cut From Nepal

1.91 ct Loose Princess Cut Sapphire, 2.4 x 2.3 mm From Tanzania

1.93 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 8 x 6.1 mm

1.37 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 6.1 x 6.1 mm

1.89 carat Baguette Facet Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gems, 3 x 1.9 mm

6.28 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 11.8 mm

10.81 ct Oval Dendritic Agate, 17.4 x 12.3 mm From India

1.24 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 8.1 x 6.7 mm

6.9 ct Oval Malachite, 12.1 x 10.1 mm From Congo

0.2 ct Square Cut Iolite, 3.3 x 3.2 mm From Madagascar

1.48 carat Cushion Checkerboard Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 7.2 x 5.1 mm

10.69 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 11.4 x 14.9 mm

1.23 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 19.7 x 2.9 mm

2.42 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6.1 x 4.1 mm

1.32 ct Blue Apatite, 5 x 4 mm Oval Cut From Madagascar

3.16 ct Loose Orange Sapphire, 8.4 x 7.7 mm Oval Cut From Thailand

8.46 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 11.4 x 9.2 mm

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