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

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

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Overall Rating -> 10

Very good customer service. I had an issue on my end with shipping and I received a response the next day!

Posted By Orphanboy in December, 2023

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Overall Rating -> 10

I searched for the item by description and millimeter and had my choice come up and then made the best selection.

Posted By Tim in April, 2024

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Overall Rating -> 10

It was easy to search and find what i wanted

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Overall Rating -> 10

Great experience! First time buyer

Posted By Todi89 in February, 2024

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Overall Rating -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

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Overall Rating -> 10

Great site

Posted By Lord of Bananas in November, 2023

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Overall Rating -> 10

My only complaint is that there are so many beautiful and affordable stones that I get distracted from what I planned to order.

Posted By Phoenix in March, 2024

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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

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

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Overall Rating -> 10

all good

Posted By John in December, 2023

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Overall Rating -> 9

Easy to use. Limited supply of higher quality gemstones.

Posted By Newfguy in February, 2024

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Overall Rating -> 10

Great selection

Posted By GHS40 in December, 2023

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Overall Rating -> 10

I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.

Posted By Apps in November, 2023

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Overall Rating -> 10

Gem Select has gems at afffordable prices.

Posted By George in March, 2024

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Gemstones A-Z

Buy 5 mm Gemstones

0.81 ct Oval Cut Peridot, 7.1 x 5 mm From China

23.04 ct Oval Nuummite, 23.6 x 13.9 mm From India

18.97 carat Pear Howlite, loose Certified Howlite from the United States, Natural Untreated Gem, 29.6 x 18.3 mm

3.64 ct Round Checkerboard Smoky Quartz, 7.9 mm From Brazil

27.6 ct Drilled Sphere Rutile Quartz, 12.3 mm From India

98.65 ct Druzy Citrine, 42.3 x 21.6 mm From Uruguay

3.23 ct Round Cut Andalusite, 4.1 mm From Brazil

3.02 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 11.7 x 9.7 mm

17.76 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 20.2 x 15.3 mm

2.25 ct Blue Kyanite, 9.9 x 7.3 mm Oval Cut From Nepal

0.7 ct Cushion Cut Color-Change Diaspore, 5.2 x 5.1 mm From Turkey

46.96 ct Oval Ruby-Zoisite, 28.9 x 20.4 mm From Tanzania

0.44 carat Oval Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5 x 3.9 mm

1.6 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 5 mm

21.48 ct Oval Rose Quartz, 19.3 x 16.3 mm From South Africa

4.02 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 12.1 x 10.2 mm

2.59 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Tanzania, Natural Untreated Gems, 5.1 x 5.1 mm

0.34 ct Oval Chrysoberyl Cat's Eye, 4.8 x 3.4 mm From Sri Lanka

7.36 ct Fancy Fire Agate, 16.9 x 9.7 mm From Mexico

2.75 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.6 mm

10.86 ct Yellow Apatite, 15.6 x 13 mm Oval Cut From Madagascar

5.58 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 10 x 8.1 mm

6.87 ct Octagon Cut Smoky Quartz, 11.6 x 11.5 mm From Brazil

0.53 carat London Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gem, 6.9 x 3.4 mm

3.94 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 4.1 mm

0.85 ct Loose Pink Sapphire, 6.1 x 4.1 mm Oval Cut From Tanzania

0.35 ct Loose Orange Sapphire, 4.2 mm Round Cut From Tanzania

4.55 ct Yellow Quartz, 9.8 x 9.8 mm Asscher Cut From Brazil

4.35 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13 x 9.7 mm

1.63 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6.1 x 6.1 mm

1.51 ct Violet Spinel, 6.7 x 6.4 mm Cushion Cut From Tanzania

1.32 carat Brown Diamond, Pear Shape loose Diamond from South Africa, Natural Untreated Gem, 8.3 x 5.4 mm

Gemstone Information

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