Calibrated 6 x 6 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 6 mm x 6 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

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

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Overall Rating -> 9

An it was good.

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Overall Rating -> 10

Always have good experience

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Overall Rating -> 9

My first purchase went well. I will purchase more gems in the future.

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Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

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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

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

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Overall Rating -> 10

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Overall Rating -> 10

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Overall Rating -> 9

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Overall Rating -> 10

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Gemstones A-Z

Buy Square Shape 6x6 mm Gems

1.55 ct Oval Cut Kornerupine, 9.1 x 6.2 mm From Sri Lanka

2.89 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 10 mm

12.72 ct Oval Pietersite, 25.6 x 16.9 mm From Namibia

1.7 carat Yellow Citrine, Trillion Buff Top loose Citrine from Brazil, Natural Untreated Gem, 7.9 x 7.8 mm

1.52 ct Yellow Beryl, 7.1 x 6.9 mm Trillion Cut From Madagascar

2.96 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.6 mm

1.67 ct Loose Round Pietersite, 9.2 mm From Namibia

36.05 ct Marquise Charoite, 41.9 x 14.8 mm From Russia

1.08 ct Loose Orange Sapphire, 6 x 4.1 mm Oval Cut From Tanzania

2.32 ct Yellow Quartz, 7.8 x 7.7 mm Carved From Brazil

1.71 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6.1 x 6.1 mm

0.48 ct Loose Pink Sapphire, 5.9 x 4.1 mm Oval Cut From Tanzania

14.51 ct Black Spinel, 12.1 x 11.8 mm Heart Rose Cut From Thailand

1.38 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 7.2 x 6 mm

2.31 ct Green Sphene, 7.8 x 7.1 mm Oval Cut From Sri Lanka

10.97 carat Pink Topaz, Oval loose Topaz from Brazil, Natural Gems, 12.2 x 9.9 mm

1.08 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 9.9 x 4.9 mm

2.92 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.4 x 8.6 mm

2.97 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.9 x 4.9 mm

1.81 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.9 x 6 mm

1.2 ct Loose Marquise Labradorite, 10.1 x 5.1 mm From Madagascar

0.53 ct Octagon Cut Peridot, 6 x 4.1 mm From China

5.48 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 7 x 5.1 mm

18.7 ct Yellow Quartz, 10.4 x 10.4 mm Carved From Brazil

1.49 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.3 x 5.8 mm

3.1 ct Green Agate, 10.1 x 8.3 mm Oval Cut From India

1.27 carat Swiss Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gem, 10 x 5.1 mm

1.85 carat Pear Opal Doublet, loose Certified Opal Doublet from Australia, Natural Gem, 14.7 x 7.5 mm

13.77 ct Oval Larimar, 20.1 x 15 mm From the Dominican Republic

2.84 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 9.9 x 5 mm

8.94 ct Carved Prehnite, 14.6 x 10 mm From South Africa

1.6 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

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