Calibrated 5 mm Natural Loose Gemstones in all shapes: GemSelect

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.

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Overall Rating -> 10

The website is easy to navigate and has a great selection. I am an amateur silver smith casting jewelry with stones

Posted By Jrplunk in April, 2024

Source: Bizrate

Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

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Overall Rating -> 10

My overall interaction with your website was pleasant, as always.

Posted By RJ in April, 2024

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Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 2023

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Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

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Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

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Overall Rating -> 9

It was simple and clear to understand.

Posted By Thora007 in December, 2023

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Overall Rating -> 10

Interested in unusual stones and found many that I purchased or will purchase in the near future. I have been a customer of gem select for almost ten years and have always been pleased with buying experience and the delivered product

Posted By Fairhope Pete in December, 2023

Source: Bizrate

Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

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Overall Rating -> 10

It was easy to navigate and I hope that the gem is as nice as the picture

Posted By 1 in April, 2024

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Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

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Overall Rating -> 10

Easy to use as always and in all steps from opening site to paying.

Posted By Pete in February, 2024

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Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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Gemstones A-Z

Buy 5 mm Gemstones

3.9 ct Oval Cut Rainbow Moonstone, 8.9 x 6.8 mm From the United States

2.15 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 9.2 x 7 mm

7.83 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 4.9 x 4.9 mm

30.21 ct Oval Bloodstone, 29.9 x 20.1 mm From Madagascar

0.16 carat Round Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.5 mm

4.42 ct Fancy Fire Agate, 11 x 10.3 mm From Mexico

1.3 ct Yellow Sphene, 7.1 x 5.5 mm Oval Cut From Sri Lanka

3.82 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gems, 4.1 x 4 mm

1.82 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.8 x 7 mm

6.46 ct Oval Star Ruby, 12.6 x 10.2 mm From Madagascar

2.61 ct Druzy Variscite, 15.5 x 9 mm From China

2.84 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gems, 5.9 x 5.8 mm

0.05 ct Loose Blue Diamond, 2.2 mm Diamond Cut From India

13.57 ct Oval Rainbow Moonstone, 21.8 x 10.6 mm From the United States

2.42 ct Loose Orange Moonstone, 9.1 x 7.1 mm Cushion Cut From India

0.65 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4.1 mm

5.25 carat Yellow Andesine Labradorite, Pear loose Andesine Labradorite from Congo, Natural Gem, 13.1 x 9.3 mm

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

3.35 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 8.8 x 6.7 mm

68.06 ct Oval Pietersite, 47 x 29.4 mm From Namibia

0.26 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 4.1 mm

5.32 carat Swiss Blue Topaz, Drilled-Briolette loose Topaz from Brazil, Natural Gems, 8 mm

2.77 carat Blue Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 8.9 x 7.1 mm

9.73 ct White Quartz, 14.1 x 14 mm Asscher Cut From Brazil

5.73 carat Yellow Citrine, Heart Buff Top loose Citrine from Brazil, Natural Untreated Gems, 9.2 x 9.2 mm

8.15 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 14 x 9.9 mm

2.5 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.1 x 9.1 mm

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

4.11 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.2 x 8 mm

8.34 ct Loose Oval Malachite, 13.9 x 9.9 mm From Congo

4.45 ct Oval Cat's Eye Opal, 12.5 x 9.5 mm From Madagascar

30.81 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 20.2 x 16.6 mm

Gemstone Information

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