Calibrated 5 mm Natural Loose Gemstones in all shapes: GemSelect

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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

the site is great and the merchandise looks awesome

Posted By Jeff in January, 2020

Source: Bizrate

Overall Rating -> 10

GemSelect has a great selection of smaller cabochons. Many other retailers do not. Plus, the photo of the stone is the one you are purchasing. Shipping from Thailand is nearly as fast as from within the US. Stones are tightly and neatly packaged.

Posted By Rich75 in January, 2020

Source: Bizrate

Overall Rating -> 9

Picking a garnet to match a setting. Good selection, It would have been better if a side by side color comparison was possible.

Posted By Goose in January, 2020

Source: Bizrate

Overall Rating -> 9

This website was very easy to use! I am looking at buying more gems soon.

Posted By Marty97 in January, 2020

Source: Bizrate

Overall Rating -> 10

Good experience

Posted By Srini in January, 2020

Source: Bizrate

Overall Rating -> 10

I was amazed at the vast selection of stones and the fair prices. This is a test purchase of 2 stones I have been searching for for some time.

Posted By Sandee in January, 2020

Source: Bizrate

Gemstone Information

Popular Gemstones

Seller Trust

Buy 5 mm Gemstones

Baguette Multicolor Opal Doublet

Marquise Violet Sapphire

Square Green Peridot

Square Red Pyrope Garnet

Square Red Rhodolite Garnet

Oval Purple Sapphire

Pear Blue Tanzanite

Round Golden Sapphire

Oval Blue Apatite

Trillion Golden Citrine

Oval Green Chrome Diopside

Round Green Peridot

Round Green Chrome Diopside

Round Blue Sapphire

Octagon / Emerald Cut Golden Sapphire

Round Orange Sapphire

1 pc (avg. 0.31 ct) Pink Sapphire

Round Green Peridot

Square Red Rhodolite Garnet

Oval Violet Amethyst

Octagon / Emerald Cut Multicolor Sapphire