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 -> 10

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Posted By G Funk in December, 2023

Source: Bizrate

Overall Rating -> 10

Hello: You do have good website. Vast majority of folks would buy the Gems for its spiritual, physical / energy level, emotional level positive aspects. You have only very brief mention of this aspect of each Gem ..may be you can add little bit more about ways to leverage the beneificial effect of each gems i.e. some practical tips.ThanksRupen Patel

Posted By EarthDeep in February, 2024

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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

first time here sooooooooooo we will seeeee!!!!! so far so good!!!!!!

Posted By Seastone 56 in October, 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

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Overall Rating -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

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Overall Rating -> 10

Super easy to do business for great products.

Posted By BoBBy in January, 2024

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Overall Rating -> 9

An it was good.

Posted By Miguel in June, 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

love yall

Posted By Rock hunter in August, 2023

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Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

Source: Bizrate

Overall Rating -> 9

making my own jewelry for my birth stone

Posted By LoveGeo in July, 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 design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023

Source: Bizrate

Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

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Gemstones A-Z

Buy Round Shape 13 mm Gems

1.24 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 11.1 x 3.6 mm

7.76 ct Yellow Apatite, 15.1 x 11.9 mm Oval Cut From Madagascar

1.59 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

3.1 ct Round Onyx, 7.2 mm From Sri Lanka

1.76 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 6.9 x 6.9 mm

15.21 ct Green Jadeite, 19.2 x 13.8 mm Oval Cut From Myanmar

29.41 ct Cushion Fossil Coral, 20.1 x 14.1 mm From Indonesia

1.34 carat Purple Spinel, Pear Shape loose Spinel from Tanzania, Natural Untreated Gem, 8.5 x 6.6 mm

28.81 ct Cushion Fossil Coral, 18.8 x 11.7 mm From Indonesia

3.32 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

2.46 ct Pink Kunzite, 9.6 x 5 mm Octagon Cut From Afghanistan

0.5 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6 x 4 mm

2.16 carat White Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 6.1 mm

6.56 carat Yellow Citrine, Briolette loose Citrine from Brazil, Natural Untreated Gem, 15.3 mm

30.57 ct Loose Oval Bloodstone, 26.3 x 19.4 mm From Madagascar

38.35 ct Marquise Hematite, 28.1 x 12.8 mm From Brazil

1.87 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 7 x 5 mm

7.2 carat Yellow Citrine, Cushion loose Citrine from Brazil, Natural Untreated Gem, 14 x 10.5 mm

0.23 ct Blue Apatite, 3.7 mm Round Cut From Madagascar

10.31 ct Cushion Labradorite, 18.2 x 8.3 mm From Madagascar

5.42 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 10.1 x 10.1 mm

4.79 carat White Zircon, Round loose Zircon from Cambodia, Natural Gems, 7.2 mm

1.42 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 x 4.9 mm

0.64 carat Pink Morganite, Oval loose Morganite from Afghanistan, Natural Untreated Gem, 7 x 5 mm

2.55 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5 x 3.7 mm

0.98 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6.2 x 4.3 mm

1.73 ct Yellow Beryl, 9.9 x 7.8 mm Oval Cut From Madagascar

7.87 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 14 x 10.1 mm

0.85 carat Blue Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 4.2 mm

13.97 ct Black Spinel, 11.7 mm Round Rose Cut From Thailand

4.56 ct Loose Pear Dendritic Agate, 14.1 x 9.9 mm From India

12.54 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18 x 13.1 mm

Gemstone Information

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