Calibrated 12 x 10 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 12 x 10 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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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

5.7 ct Pink Morganite, 16 x 10 mm Carved From Afghanistan

27.33 ct Fancy Jasper, 35.7 x 13 mm From Indonesia

1.02 ct Blue Kyanite, 6.9 x 4.9 mm Oval Cut From Nepal

8.89 carat Blue Green Turquoise, Pear loose Turquoise from China, Natural Untreated Gem, 24.2 x 12.8 mm

0.85 carat Round Cabochon Emerald, loose Certified Emerald from Colombia, Natural Gems, 4.6 mm

17.84 ct Loose Pear Cut Amethyst, 21.2 x 16.1 mm From Brazil

2.23 ct Orange Andesine Labradorite, 11.4 x 7.2 mm Oval Cut From Congo

6.26 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 9.2 x 9.1 mm

2.78 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gems, 5.9 x 3.9 mm

1.72 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 4.8 x 2.8 mm

8.35 ct Carved Prehnite, 18.2 x 11.8 mm From South Africa

5.59 carat Pink Morganite, Oval Portuguese-Cut loose Morganite from Afghanistan, Natural Untreated Gem, 11.9 x 10.4 mm

2.46 carat Pear Pietersite, loose Certified Pietersite from Namibia, Natural Untreated Gem, 13.9 x 8.4 mm

2.67 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 12 x 10 mm

7.48 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 11.2 x 9 mm

32.34 ct Pencil Cut Tiger's Eye, 37 x 10.5 mm From Thailand

3.34 ct Oval Tiger's Eye, 8.4 x 6.4 mm From Thailand

7.65 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 11 x 9 mm

0.91 ct Loose Round Cut Lapis Lazuli, 6 mm From Afghanistan

2.33 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.1 x 9.1 mm

0.8 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gem, 7.3 x 4.9 mm

1 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5 x 4.9 mm

19.58 carat Blue Green Aquamarine, Oval loose Aquamarine from Madagascar, Natural Untreated Gem, 19.4 x 14.8 mm

0.52 ct Loose Yellow Sapphire, 3.2 x 3.2 mm Princess Cut From Tanzania

3.9 ct Orange Moonstone, 7.2 x 7.1 mm Square Cut From India

4.29 ct Oval Spectrolite, 10.1 x 8.2 mm From Finland

0.67 carat Green Sapphire, Cushion loose Sapphire from Madagascar, Natural Gem, 5.4 x 4.4 mm

0.74 carat Round Sapphire, loose Certified Sapphire from Tanzania, Natural Gems, 3.9 mm

3.28 ct Yellow Andesine Labradorite, 10.6 x 8.3 mm Oval Cut From Congo

0.63 carat Yellow Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gems, 4.9 x 3.2 mm

15.01 ct Loose Pear Labradorite, 18.1 x 12.9 mm From Madagascar

17.79 ct Oval Star Ruby, 15.1 x 12.2 mm From Madagascar

Gemstone Information

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