Marquise Shape 10 x 5 mm calibrated natural loose gems 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 marquise shaped facet cut gems, gemstone carvings and cabochons available in 10 mm x 5 mm sizes. For the largest selection of colored gemstones, Shop GemSelect Online.

As a general guideline, when it comes to calibrated gems, they are not usually expected to be cut to exact measurements and specifications. But rather, they're cut with slight variance in size, though the close approximatation in size is not clearly defined, there are general guidelines for what is considered acceptable. Obviously larger and heavy carat weight stones allow more room in size for variance, while smaller stones may leave little to none. This means a large 30mm calibrated gemstone, could actually be closer to 31 millimeters. For this reason, we recommend to always view the exact size in addition to the calibrated size details. The exact size will inform you of the variance you can expect. Some setting styles are more flexible with variance, such as prong settings, while other styles of mountings may need almost an exact size to the fraction of millimeter.

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 round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most 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 Marquise Shape 10x5 mm Gems

6.38 ct Yellow Quartz, 14.2 x 9.9 mm Flower Cut From Brazil

1.56 ct Oval Cut Black Opal, 10.4 x 7.8 mm From Ethiopia

0.84 carat Yellow Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 8 x 5.7 mm

1.61 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.5 x 6.8 mm

2.93 ct Carved Rose Quartz, 13.2 x 9.1 mm From South Africa

0.64 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 7.1 x 5.1 mm

5.41 ct Yellow Agate, 12.9 x 11.2 mm Oval Cut From India

12.31 ct Asscher Cut Smoky Quartz, 13.3 x 13.2 mm From Brazil

1.67 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 6.6 mm

1.69 ct Round Concave Cut Mystic Quartz, 8.1 mm From Brazil

1.44 ct Round Sillimanite Cat's Eye, 6.3 mm From Madagascar

14.08 ct Loose Oval Agate, 16.1 x 13.5 mm From Indonesia

2.7 carat Blue Zircon, Oval loose Zircon from Cambodia, Natural Gems, 5 x 4 mm

2.07 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.4 x 7.1 mm

2.15 ct Oval Cut Strawberry Quartz, 8.2 x 6.2 mm From Russia

0.23 ct Black Diamond, 3 mm Diamond Cut From India

1.91 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 x 6.7 mm

6.3 ct Marquise Slice Ruby in Fuchsite, 16.1 x 9.4 mm From Ethiopia

10.48 ct Round Cut Smoky Quartz, 14.9 mm From Brazil

3.86 ct Blue Star Sapphire, 6.8 x 5.1 mm Oval Cut From Thailand

11.46 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 10 x 8.2 mm

1.19 carat Blue Sapphire, Diamond-Cut loose Sapphire from Madagascar, Natural Gems, 5.1 mm

4.76 ct Yellow Quartz, 14.9 x 11 mm Carved From Brazil

1.16 carat Pear Shape Opal, loose Certified Opal from Australia, Natural Untreated Gem, 9.6 x 7.2 mm

1.22 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 6.8 x 5 mm

1.48 ct Blue Kyanite, 8.1 x 5.9 mm Oval Cut From Nepal

3.32 ct Multicolor Mystic Quartz, 8.1 mm Diamond Cut From Brazil

1.23 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.5 x 3.7 mm

2.96 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.9 mm

4.95 carat Half Drilled Briolette Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.2 mm

0.59 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 5.1 x 3.2 mm

3.67 ct Round Labradorite, 7.2 mm From Madagascar

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