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

23.8 ct Loose Cushion Charoite, 18.7 x 18.6 mm From Russia

0.21 carat Oval Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 4.7 x 3 mm

8.67 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

1 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 5.2 x 5.2 mm

1.32 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.6 x 3.1 mm

0.72 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gem, 6.8 x 4.9 mm

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

4.75 carat Diamond-Cut Tsavorite Garnet, loose Certified Tsavorite Garnet from Kenya, Natural Untreated Gems, 2.2 mm

2.44 ct Oval Prehnite, 9.6 x 7 mm From South Africa

2.91 ct Oval Prehnite, 9.5 x 7.1 mm From South Africa

9.27 ct Marquise Rainbow Moonstone, 22.2 x 9.3 mm From the United States

0.39 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.8 x 3.8 mm

22.08 carat Oval Tiger's Eye, loose Certified Tiger's Eye from Thailand, Natural Untreated Gem, 26.5 x 16.8 mm

2.42 ct Loose Orange Moonstone, 8 x 8 mm Cushion Cut From India

2.33 ct Round Prehnite, 6.8 mm From South Africa

6.22 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 15.1 x 10.2 mm

0.43 ct Loose Purple Sapphire, 5.4 x 4.4 mm Oval Cut From Madagascar

0.6 carat Yellow Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 5.8 x 4.8 mm

10.23 ct Asscher Cut Rose Quartz, 13.5 x 13.4 mm From South Africa

2.03 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.2 x 6.1 mm

5.26 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.9 x 10 mm

3.08 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.9 x 8.8 mm

1.69 ct Yellow Beryl, 9.2 x 6.9 mm Cushion Cut From Brazil

3.46 carat Sky Blue Topaz, loose Topaz from Brazil, Natural Gems, 7 x 4.9 mm

3.06 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.2 x 8.9 mm

0.7 ct Loose Yellow Sapphire, 3.7 x 3.6 mm Princess Cut From Tanzania

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

52 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 24.9 x 21.3 mm

0.86 ct Loose Purple Sapphire, 6.5 x 4.8 mm Oval Cut From Madagascar

3.7 carat Round Cabochon Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.2 mm

0.8 ct Oval Cut Color-Change Diaspore, 5.6 x 4.9 mm From Turkey

0.66 ct Loose Pink Sapphire, 6.1 x 5 mm Oval Cut From Madagascar

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