Calibrated 5 mm Natural Loose Gemstones in all shapes: GemSelect

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About 5 mm Gemstones

Buy gems by size in millimeters. Some people by gems by color or prize, 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 sizes and shapes, facet cut and cabochon gems available now in the 5 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 usually 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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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 -> 10

Lapis has flecks of gold in it. This item, not so many.

Posted By Billy in November, 2020

Source: Bizrate

Overall Rating -> 10

The stones i received were the exact ones in the pictures and they arrived much sooner than I expected!

Posted By TessVander in November, 2020

Source: Bizrate

Overall Rating -> 9

Found exactly what I was looking for, but I don't know how to tell the size. I'll have my jeweler nake it fit.

Posted By BlingElaine in November, 2020

Source: Bizrate

Overall Rating -> 10

all good

Posted By Jerm in November, 2020

Source: Bizrate

Overall Rating -> 8

It was chill, got what I needed

Posted By Will in November, 2020

Source: Bizrate

Overall Rating -> 9

The website is very convenient with actual photos.

Posted By Drew in November, 2020

Source: Bizrate

Gemstone Information

Popular Gemstones

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Selected Gemstones

Selected Shapes

Gemstones A-Z

Buy 5 mm Gemstones

Round Blue Sapphire

Round Multicolor Sapphire

Oval Green Demantoid Garnet

Round Orange Sapphire

Octagon / Emerald Cut Multicolor Sapphire

1 pc (avg. 0.41 ct) Purple Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Oval Green Demantoid Garnet

Octagon / Emerald Cut Multicolor Sapphire

Oval Green Demantoid Garnet

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Oval Green Demantoid Garnet

1 pc (avg. 0.24 ct) Green Chrome Diopside

Round Purple Sapphire

Oval Green Demantoid Garnet

Oval Green Demantoid Garnet

Oval Green Demantoid Garnet

Round Blue Sapphire

Round Blue Sapphire

About 5 mm Gemstones

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