Calibrated 16 x 12 mm Oval Shape Natural Loose Gemstones: 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 oval shapes, facet cut and cabochon gems available now in 16 x 12 mm 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 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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Overall Rating -> 10

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Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

3.66 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.9 x 8.7 mm

21.31 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gems, 30.7 x 12.6 mm

0.59 ct Loose Orange Sapphire, 4.8 mm Round Cut From Tanzania

6.4 ct Oval Fire Agate, 14.4 x 11 mm From Mexico

0.5 carat Yellow Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 5.9 x 4 mm

13.1 ct Oval Coral, 22 x 16.4 mm From Indonesia

0.84 carat Green Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 13.9 x 2.6 mm

6.15 ct Blue Green Grandidierite, 11.8 x 10 mm Oval Cut From Madagascar

1.27 carat Teal Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 6.1 x 5 mm

2.56 ct Octagon Cut Peridot, 6.1 x 4.1 mm From China

22.05 carat Emerald Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 20 x 15 mm

3.4 ct Yellow Quartz, 12.8 x 12.8 mm Carved From Brazil

0.15 ct White Diamond, 2.7 mm Diamond Cut From Brazil

2.51 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.2 x 5.2 mm

4.39 ct Princess Cut Rose Quartz, 9.5 x 9.4 mm From South Africa

12.43 ct Baguette Tiger's Eye, 12.2 x 10.2 mm From Thailand

4.42 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.2 x 4.1 mm

7.34 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

1.05 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.7 x 3 mm

4.18 ct Asscher Cut Rose Quartz, 10.4 x 10.4 mm From South Africa

0.94 ct Cushion Checkerboard Peridot, 7 x 5.3 mm From China

12.81 carat Cameo Mother of Pearl, loose Certified Mother of Pearl from China, Natural Gem, 25.1 mm

9.38 ct Asscher Cut Rose Quartz, 13.4 x 13.4 mm From South Africa

3.36 ct Round Checkerboard Smoky Quartz, 7.9 mm From Brazil

1.55 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6.1 x 6 mm

5.38 carat Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 15.2 x 9 mm

3.2 ct Blue Kyanite, 8.1 x 6.2 mm Oval Cut From Nepal

0.69 ct Loose Pink Sapphire, 6.9 x 5.6 mm Odd Shaped From Madagascar

0.15 carat Round Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.3 mm

0.95 ct Purple Spinel, 6.3 x 5.2 mm Cushion Cut From Tanzania

33.96 carat Pear Hematite, loose Certified Hematite from Brazil, Natural Untreated Gem, 27.6 x 18.3 mm

1.2 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 8.2 x 6.2 mm

Gemstone Information

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