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

This purchase was very easy to complete. I have been buying items every once in a while from you for a few years now, and always love the simplicity of teaching and purchasing items. I will, of course, purchase from you again.

Posted By John in February, 2020

Source: Bizrate

Overall Rating -> 10

This site is great.

Posted By Con in February, 2020

Source: Bizrate

Overall Rating -> 10

GemSelect has a vast selection of gemstones in various size, shape and price. I like it because the gems are precut and ready for the novice jewler. The website is very easy to navigate and purchasing was a breeze.

Posted By Mr. C in February, 2020

Source: Bizrate

Overall Rating -> 8

It was super easy to find what i wanted and i loved how i can sort through the huge selection easily

Posted By Max in February, 2020

Source: Bizrate

Overall Rating -> 10

This is my second time purchasing from Gem Select. I love this vendor and the website Full of info and if there’s any problems or questions customer service has been stellar at Making the experience a great one.

Posted By Tmpbjur in February, 2020

Source: Bizrate

Overall Rating -> 8

seems like a good place to purchase a gem

Posted By Jane in February, 2020

Source: Bizrate

Gemstone Information

Popular Gemstones

Seller Trust

Buy 5 mm Gemstones

Round Golden Sapphire

Square Red Pyrope Garnet

Round Green Peridot

Round Golden Sapphire

Round Blue Sapphire

Round Yellow Sapphire

Square Green Peridot

Cushion Green Amazonite

Round Orange Sunstone

Square Red Rhodolite Garnet

Round Golden Sapphire

Octagon / Emerald Cut Green Sapphire

Square Red Pyrope Garnet

Oval Violet Sapphire

Marquise Purple Sapphire

Round Red Spessartite Garnet

Octagon / Emerald Cut Multicolor Sapphire

Round Orange Sapphire

Pear White Rainbow Moonstone

Round Yellow Sapphire

Oval Orange Sapphire