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

14.65 ct Pencil Cut Jasper, 29.2 mm From India

5.65 ct Oval Agate, 12 x 10.7 mm From Indonesia

1 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 11.3 x 4.4 mm

0.66 carat Yellow Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 7.8 x 5.7 mm

8.74 ct Baguette Malachite, 11.4 x 10.4 mm From Congo

2.65 ct Pink Morganite, 7.5 mm Round Cut From Afghanistan

44.8 ct Baguette Hematite, 20.5 x 14.8 mm From Brazil

19.58 ct Oval Onyx, 25.1 x 18.1 mm From Sri Lanka

2.14 ct Loose Round Agate, 8.8 mm From Indonesia

1.57 carat Heart Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 8.1 x 8 mm

1.45 ct Pink Morganite, 7.1 mm Round Cut From Afghanistan

1.17 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9.1 x 7 mm

12.35 ct Loose Oval Lapis Lazuli, 15.4 x 11.8 mm From Afghanistan

1.49 ct Blue Kyanite, 8.2 x 6.1 mm Oval Cut From Nepal

0.75 carat Green Sapphire, Cushion loose Sapphire from Tanzania, Natural Gem, 4.7 x 4.6 mm

0.5 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gems, 3.8 mm

86.05 ct Round Rhodonite, 37.1 mm From Australia

3.79 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gems, 7.1 x 7.1 mm

0.2 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.4 mm

3.8 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.1 x 9.9 mm

38.06 ct White Scolecite, 35.9 x 24.5 mm Oval Cut From South Africa

1.69 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.2 x 4.2 mm

1.95 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.6 x 7 mm

1.4 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.5 x 6.3 mm

4.36 ct Oval Spectrolite, 10.1 x 8.3 mm From Finland

1.31 ct Oval Cut Fire Opal, 7.8 x 5.8 mm From Mexico

0.53 ct Loose Yellow Sapphire, 5 x 4 mm Octagon Cut From Tanzania

4.61 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.2 mm

0.37 ct Oval Cut Kornerupine, 4.9 x 3.8 mm From Sri Lanka

3.06 ct Orange Andesine Labradorite, 10.1 x 8.2 mm Oval Cut From Congo

1.32 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.1 x 3.1 mm

0.95 ct Cushion Cut Color-Change Diaspore, 7.9 x 4.8 mm From Turkey

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