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

1.57 ct Green Sphene, 7.3 x 6.4 mm Oval Cut From Sri Lanka

26.09 carat Bi-color Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 23.8 x 17.1 mm

5.06 ct Oval Rutile Quartz, 13 x 9 mm From India

2.26 ct Yellow Quartz, 10.3 x 10.1 mm Carved From Brazil

4.75 ct Round Cut Peridot, 6.1 mm From China

29.14 ct Violet Lepidolite, 39.8 x 9.5 mm Pencil Cut From the United States

0.59 ct Yellow Sphalerite, 4.6 mm Round Cut From Spain

3.67 ct Yellow Quartz, 9.1 x 9 mm Carved From Brazil

0.8 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 10.6 x 4 mm

2.44 ct Blue Green Grandidierite, 9.1 x 7.5 mm Oval Cut From Madagascar

4.53 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10 x 5.1 mm

1.68 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.5 x 3.4 mm

3.71 ct White Moonstone, 11.1 x 8.3 mm Oval Cut From India

0.86 carat Pink Tourmaline, Oval loose from Mozambique, Natural Untreated Gem, 6.3 x 4.9 mm

1.39 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 9.8 x 7.4 mm

6.22 ct Marquise Concave Cut Smoky Quartz, 18.1 x 7.2 mm From Brazil

12.08 carat Pink Topaz, Round loose Topaz from Brazil, Natural Gem, 14 mm

0.5 carat Blue Sapphire, Round Cabochon loose Sapphire from Tanzania, Natural Gem, 4.3 mm

0.67 carat Purple Spinel, Pear Shape loose Spinel from Tanzania, Natural Untreated Gem, 5.8 x 5 mm

18.22 ct Oval Pietersite, 19.3 x 14.6 mm From China

4.11 carat Sky Blue Topaz, Marquise Cut loose Topaz from Brazil, Natural Gem, 14.2 x 8.2 mm

2.22 carat Cushion Mixed Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 8.1 mm

1.65 ct Loose White Sapphire, 4.5 mm Diamond Cut From Madagascar

3.18 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 7.8 x 5.9 mm

1.3 ct Blue Kyanite, 7.1 x 5 mm Oval Cut From Nepal

4.41 ct Loose Oval Opal, 17.7 x 12.6 mm From Australia

4.8 carat Yellow Citrine, loose Citrine from Brazil, Natural Untreated Gems, 14.1 x 7 mm

25.5 ct Loose Pear Bloodstone, 32.1 x 22.4 mm From Madagascar

1.02 carat Oval Ruby, loose Certified Ruby from Myanmar, Natural Gem, 7 x 5.1 mm

3.41 ct Oval Cut Golden Beryl, 9.2 x 7 mm From Madagascar

4.32 carat Pear Shape Sapphire, loose Certified Sapphire from Tanzania, Natural Gems, 5.1 x 3.1 mm

23.05 ct Oval Star Ruby, 18.5 x 15.6 mm From Madagascar

Gemstone Information

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