Buy 13 mm Round Calibrated Gemstones from GemSelect

Some people by gems by color or price, 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 Round shapes, facet cut and cabochon gems available now in 13 mm diameter 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 around 0.3 mm or slightly higher even. This small variance can usually be accommodated for 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 -> 9

The selection and filtering is a little overwhelming, but that's only because there is so much to choose from.

Posted By Kasper in June, 2023

Source: Bizrate

Overall Rating -> 10

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

Source: Bizrate

Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

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Overall Rating -> 10

The website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 2023

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Overall Rating -> 8

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 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 -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

Source: Bizrate

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

Very detailed and great pictures

Posted By Alexandrite in November, 2023

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Overall Rating -> 10

Easy to use.

Posted By Hope in March, 2024

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Overall Rating -> 10

The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

Posted By Orchidisle in February, 2024

Source: Bizrate

Overall Rating -> 10

Excellent site.

Posted By Boru in December, 2023

Source: Bizrate

Overall Rating -> 9

I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

Posted By Sparkle in March, 2024

Source: Bizrate

Overall Rating -> 10

Found the stone I wanted which was delivered quickly and met expectations.

Posted By GemGrammy in January, 2024

Source: Bizrate

Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

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Gemstones A-Z

Buy Round Shape 13 mm Gems

4.64 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

4.49 ct Round Cut Strawberry Quartz, 11 mm From Russia

0.94 carat Orange Moonstone, Pear Shape loose Moonstone from India, Natural Untreated Gem, 9 x 6.1 mm

0.67 ct Loose Pink Sapphire, 6.3 x 4.5 mm Oval Cut From Madagascar

2.82 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gems, 8.1 x 6.2 mm

1.3 ct Yellow Beryl, 8.3 x 7.9 mm Trillion Cut From Madagascar

1.03 ct Pink Morganite, 8 x 5.3 mm Cushion Cut From Afghanistan

9.18 ct Orange Sunstone, 8.8 mm Round Cut From India

0.62 ct Purple Spinel, 5.6 x 4.7 mm Oval Cut From Tanzania

3.54 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.9 x 8.9 mm

1.52 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.9 x 4.9 mm

2.56 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5.1 mm

1.59 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 10.1 x 8 mm

0.51 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.2 x 4.2 mm

6.75 ct Oval Actinolite Cat's Eye, 13.5 x 11.6 mm From the United States

23.02 ct Oval Star Ruby, 16.9 x 14.9 mm From Madagascar

0.66 ct Loose Pink Sapphire, 6.6 x 4.4 mm Oval Cut From Madagascar

0.52 carat White Topaz, Square loose Topaz from Brazil, Natural Untreated Gem, 4.3 x 4.3 mm

4.07 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 7.2 x 5.1 mm

4.56 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.1 x 10.2 mm

2.61 ct Round Cut Peridot, 4.6 mm From China

2 carat Round Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 2.1 mm

1.09 ct Loose Yellow Sapphire, 6.6 x 5.2 mm Cushion Cut From Tanzania

2.34 ct Loose Orange Moonstone, 14.1 x 7.1 mm Marquise Cut From India

0.77 ct Loose White Sapphire, 4.4 mm Diamond Cut From Madagascar

5.55 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7 x 5.1 mm

1.44 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 8 x 6.2 mm

0.73 ct Green Sphene, 6.1 x 4.6 mm Oval Cut From Sri Lanka

0.52 ct Loose Yellow Sapphire, 3.3 x 3.3 mm Princess Cut From Tanzania

0.8 ct Loose Orange Sapphire, 6.1 x 5 mm Oval Cut From Madagascar

1.21 ct Loose Oval Cut Opal, 9.3 x 7.2 mm From Australia

0.44 ct Loose Yellow Sapphire, 3.1 x 3 mm Princess Cut From Tanzania

Gemstone Information

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