Calibrated 12 x 12 mm Square Shape Loose Natural Gemstones from GemSelect

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Square Shape 12x12 mm 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 12 mm x 12 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.

Certified Customer Reviews

Overall Rating -> 9

Great selection. Love the many learning features like articles and gem information. Prices competitive for natural stones. I do miss not having a selection of lab-made stones, CZ’s, etc, which are useful when price and cost are factors.

Posted By Dirk in January, 2019

Source: Bizrate

Overall Rating -> 10

Website easy to navigate.

Posted By RaeRae in January, 2019

Source: Bizrate

Overall Rating -> 9

I WOULD RECOMMEND GEM SELECT.

Posted By BO in January, 2019

Source: Bizrate

Overall Rating -> 10

As Always never disappointed in any gemstone I purchase from this site. I have never had a problem. Thank-You Gemselect for offering such a comprehensive variety . I will continue to order from this site.

Posted By Brian in January, 2019

Source: Bizrate

Overall Rating -> 10

Easy to find what i'm looking for on website, very clear, like photos

Posted By Lifter in January, 2019

Source: Bizrate

Overall Rating -> 10

Better than what I expected. Beautifully cut gem!

Posted By in January, 2019

Source: Bizrate

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Buy Square Shape 12x12 mm Gems

Square Black Spinel

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Square Black Spinel

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Square Pink Rose Quartz

Square Black Spinel

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Square Pink Rose Quartz