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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Gemstones A-Z

Buy Round Shape 11 mm Gems

6.66 ct Drilled Square Rondelle Labradorite, 5.1 x 5 mm From Madagascar

4.17 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7 x 7 mm

1.75 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 17.7 x 3.8 mm

18.87 ct Trillion Turquoise, 21.1 x 20.1 mm From the United States

4.75 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gems, 12.1 x 6 mm

31.71 ct Cushion Obsidian, 27.4 x 21.1 mm From Mexico

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

3.67 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 5.1 x 4.2 mm

28.87 ct Oval Rose Cut Onyx, 27.2 x 20.3 mm From Sri Lanka

1.21 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 7.2 x 7.1 mm

1.07 ct Blue Kyanite, 7 x 5.1 mm Oval Cut From Nepal

17.99 ct Oval Star Ruby, 16.2 x 14.3 mm From Madagascar

1.9 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 7.6 x 6.1 mm

5.46 ct Oval Cat's Eye Opal, 12.3 x 9.2 mm From Madagascar

0.05 ct Black Diamond, 2.1 mm Diamond Cut From India

2.39 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 8.8 x 6.4 mm

2.09 carat Emerald Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.7 x 3.8 mm

0.3 ct Oval Chrysoberyl Cat's Eye, 3.9 x 3.8 mm From Sri Lanka

0.73 ct Loose Yellow Sapphire, 5.2 mm Round Cut From Tanzania

0.44 carat Green Sapphire, Emerald-Cut loose Sapphire from Tanzania, Natural Gem, 5.1 x 3.2 mm

3.14 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5 mm

11.8 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 18.2 x 13 mm

25.89 ct Fancy Jasper, 31.6 x 13.9 mm From Indonesia

0.99 carat Oval Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gem, 6.9 x 5.1 mm

0.8 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 6 x 4.1 mm

9.52 ct Loose Pear Dendritic Agate, 17.9 x 13.4 mm From India

5.01 ct Yellow Quartz, 11.7 x 11.6 mm Asscher Cut From Brazil

2.77 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 9.9 mm

1.21 ct Yellow Beryl, 8.1 x 7.8 mm Trillion Cut From Madagascar

0.83 ct Marquise Cut Color-Change Diaspore, 9.8 x 4.1 mm From Turkey

3.37 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 13 x 9 mm

1.6 carat Oval Peridot, loose Certified from China, Natural Untreated Gems, 6.9 x 4.9 mm

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