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

24.01 ct Oval Cat's Eye Opal, 24.5 x 17.5 mm From Brazil

7.26 ct Amethyst Geode Slice, 16.9 x 11.4 mm From Brazil

3.88 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 8.7 mm

8.25 ct Oval Star Moonstone, 14.5 x 10.6 mm From India

0.17 carat Round Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.6 mm

2.91 ct Loose Trillion Cut Amethyst, 10.1 x 9.9 mm From Brazil

0.39 ct Loose Pink Sapphire, 6 x 4 mm Oval Cut From Madagascar

1.32 carat Orange Sunstone, Oval loose Sunstone from India, Natural Untreated Gem, 8.1 x 6.2 mm

0.88 ct Purple Spinel, 6 x 5 mm Cushion Cut From Tanzania

1.45 carat Round Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 3.7 mm

6.82 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.4 x 11.5 mm

1.31 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.7 x 6.5 mm

0.76 ct Octagon Cut Color-Change Diaspore, 7.1 x 3.7 mm From Turkey

0.6 ct Loose Purple Spinel, 5.9 x 4.6 mm Cushion Cut From Tanzania

1.61 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 7 mm

5.05 ct Blue Green Grandidierite, 13 x 9 mm Oval Cut From Madagascar

5.41 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.1 x 9.8 mm

7.56 ct Oval Buff Top Chalcedony, 10.9 x 9 mm From Brazil

13.02 ct Oval Serpentine, 21.7 x 13.6 mm From the United States

3.12 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 10.1 x 8.1 mm

9.42 ct Yellow Cat's Eye Apatite, 12.6 x 11.5 mm Oval Cut From Kenya

5.48 carat Swiss Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 9.1 x 9 mm

0.84 carat London Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gem, 7 x 5 mm

14.54 ct Cushion Checkerboard Nuummite, 16.3 x 14.3 mm From India

24.78 ct Oval Jasper, 30 x 19.2 mm From Indonesia

1.77 carat Heart Cabochon Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6.3 x 6.1 mm

0.83 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.4 x 3.8 mm

2.19 ct Round Cut Andalusite, 4.1 mm From Brazil

5.12 ct Asscher Cut Rose Quartz, 11.3 x 11.2 mm From South Africa

0.59 ct Purple Spinel, 5 mm Round Cut From Tanzania

1.49 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.2 x 5.1 mm

1.25 ct Yellow Beryl, 8.2 x 8.1 mm Trillion Cut From Madagascar

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