Calibrated 14 x 12 mm Cushion Shape Loose Natural Gemstones from G...

Some people by gems by color or price, but for many, it is best to buy gems by size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated cushion shapes, facet cut and cabochon gems available now in 14 mm 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 meant nor 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 Cushion Cut 14x12 mm Gems

1.45 ct Purple Spinel, 6.8 x 5.8 mm Cushion Cut From Tanzania

1.66 ct Blue Kyanite, 8.2 x 6.2 mm Oval Cut From Nepal

2.35 ct Orange Sunstone, 8.6 mm Round Cut From India

5.95 carat Round Almandine Garnet, loose Certified Almandine Garnet from Madagascar, Natural Untreated Gems, 3 mm

3.4 ct Square Cut Rainbow Moonstone, 3.1 x 3 mm From India

2.47 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.8 x 6.9 mm

3.09 carat Brown Zircon, Oval loose Zircon from Cambodia, Natural Untreated Gems, 7.7 x 5.6 mm

7.13 ct Round Agate, 11.2 mm From Indonesia

0.66 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 7.7 x 5.3 mm

1.85 ct Orange Moonstone, 7 x 7 mm Cushion Cut From India

0.94 ct Oval Sillimanite Cat's Eye, 7.1 x 4.7 mm From Madagascar

20.96 ct Green Aventurine, 26.1 x 15 mm Oval Cut From Brazil

51.2 carat Green Opal, Oval loose Opal from Brazil, Natural Untreated Gem, 26.2 x 20.9 mm

3.26 ct Oval Malachite, 9.5 x 7.1 mm From Congo

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

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

2.1 ct Round Labradorite, 6.2 mm From Madagascar

5.46 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 11.2 x 10 mm

2.92 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.4 x 8.6 mm

7.07 carat Brown Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 14 x 10.1 mm

1.05 ct Round Labradorite, 6.2 mm From Madagascar

1.86 ct Oval Prehnite, 7.3 x 6.9 mm From South Africa

1.52 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5.1 x 5 mm

0.54 ct Loose Orange Sapphire, 5.6 x 3.9 mm Oval Cut From Tanzania

6.27 ct Oval Agate, 12.9 x 10.3 mm From Indonesia

0.52 ct Loose Yellow Sapphire, 4.6 x 4.5 mm Heart Cut From Tanzania

0.75 ct Loose Yellow Sapphire, 5.1 x 3 mm Baguette Cut From Tanzania

3.69 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.8 x 8.8 mm

2.79 carat Swiss Blue Topaz, Trillion-Cut loose Topaz from Brazil, Natural Gems, 7.1 x 6.9 mm

15.21 carat Swiss Blue Topaz, Cushion loose Topaz from Brazil, Natural Gem, 21.2 x 11.4 mm

29.11 ct Pencil Cut Tiger's Eye, 38.1 x 9.7 mm From Thailand

1.24 ct Yellow Sillimanite, 7.8 x 6 mm Oval Cut From Sri Lanka

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