Buy 11 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 11 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

I was looking for ammolite for my husband. Other websites are not always clear about whether they have genuine ammolite or simulated ammolite. I have purchased from GemSelect before and trust that the stones are genuine. Finding the stones I want is easy, and I love all of the search filter options!

Posted By Ana in September, 2023

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Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

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It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

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Overall Rating -> 10

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Gemstones A-Z

Buy Round Shape 11 mm Gems

0.21 ct White Diamond, 3 mm Diamond Cut From Brazil

5.95 carat Round Almandine Garnet, loose Certified Almandine Garnet from Madagascar, Natural Untreated Gems, 3.2 mm

1.31 ct Green Sphene, 6.8 x 6.1 mm Oval Cut From Sri Lanka

18.53 ct Square Hematite, 15.7 x 15.4 mm From Brazil

1.3 ct Purple Spinel, 6.7 x 5.9 mm Cushion Cut From Tanzania

1.8 carat Orange Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 8.1 mm

1.73 ct Pink Morganite, 7.7 mm Round Cut From Afghanistan

25.26 ct Fancy Fossil Coral, 23.1 x 11.9 mm From Indonesia

0.84 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8.1 x 4.1 mm

2.04 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.1 x 7.1 mm

1.68 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

19.33 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.3 x 14.3 mm

1.22 carat Oval Ruby, loose Certified Ruby from Myanmar, Natural Gem, 6.9 x 5.1 mm

34.58 ct Carved Prehnite, 18.2 x 13.2 mm From South Africa

2.08 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5 mm

4.57 ct Round Rutile Quartz, 10.4 mm From India

7.77 ct Asscher Cut Smoky Quartz, 11.8 x 11.7 mm From Brazil

1.29 ct Yellow Beryl, 8.8 x 6.7 mm Oval Cut From Madagascar

2.89 ct Round Petal Cut Smoky Quartz, 8.6 mm From Brazil

7.5 carat Yellow Citrine, Emerald Cut loose Citrine from Bolivia, Natural Untreated Gem, 14.1 x 10.1 mm

1.6 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 8.4 x 5.2 mm

0.57 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 5.1 x 3.1 mm

5.68 carat Half Drilled Briolette Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.2 mm

0.59 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.1 x 4.1 mm

40.36 ct Oval Jasper, 35.9 x 26.6 mm From Indonesia

13.76 ct Round Maw-Sit-Sit, 12 mm From Myanmar

3.82 ct Yellow Andesine Labradorite, 12.7 x 8.6 mm Oval Cut From Congo

0.45 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gem, 5.9 x 3.9 mm

0.88 ct Blue Kyanite, 5.9 mm Round Cut From Nepal

16.09 ct Carved Ruby-Zoisite, 15.6 x 15.3 mm From Tanzania

2.54 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4 mm

26.92 ct Blue Green Turquoise, 22.6 x 16.7 mm Oval Cut From the United States

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