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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I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

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My first purchase went well. I will purchase more gems in the future.

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My only complaint is that there are so many beautiful and affordable stones that I get distracted from what I planned to order.

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Overall Rating -> 8

purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

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I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

0.95 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.5 x 5.5 mm

3.68 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8 x 6 mm

7.88 ct Marquise Slice Ruby in Fuchsite, 21.3 x 11.4 mm From Ethiopia

0.96 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 9.6 x 4.4 mm

0.57 ct Green Sphene, 5.1 x 4.5 mm Oval Cut From Sri Lanka

1.53 carat Green Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 7.1 mm

3.69 ct Round Checkerboard Smoky Quartz, 8 mm From Brazil

21.69 ct Green Jadeite, 28.9 x 15.4 mm Carved From Myanmar

1.14 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 12.1 x 4.1 mm

4.75 ct Round Labradorite, 8 mm From Madagascar

0.72 ct Loose White Sapphire, 4.3 mm Diamond Cut From Madagascar

3.72 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 11.9 x 5.9 mm

1.5 ct Loose Yellow Sapphire, 7.6 x 5.3 mm Oval Cut From Madagascar

0.66 carat Green Sapphire, Oval loose Sapphire from Madagascar, Natural Gem, 6.1 x 4.1 mm

0.54 carat Blue Kyanite, Round loose Kyanite from Nepal, Natural Untreated Gem, 4.3 mm

24.16 ct Carved Ruby-Zoisite, 18.7 x 15 mm From Tanzania

1.35 ct Oval Cut Kornerupine, 8.6 x 5.7 mm From Sri Lanka

1.5 ct Octagon Cut Color-Change Diaspore, 10 x 4.2 mm From Turkey

6.48 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 13.4 x 10.3 mm

17.25 ct Odd Shaped Druzy Variscite, 27 x 24.6 mm From Argentina

7.47 ct Oval Prehnite, 11.4 x 8.7 mm From South Africa

6.19 ct Loose Baguette Tiger's Eye, 12.1 x 10.1 mm From Thailand

1.37 ct Green Sphene, 7.1 x 5.8 mm Oval Cut From Sri Lanka

0.55 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gem, 6.2 x 4.2 mm

11.88 ct Octagon Cut Smoky Quartz, 13.9 x 13.9 mm From Brazil

1.3 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.1 x 3.5 mm

4.64 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8.6 x 6.5 mm

1.85 ct Oval Cut Strawberry Quartz, 9.1 x 7 mm From Russia

0.97 ct Oval Cut Peridot, 6 x 3.9 mm From China

1.85 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.1 x 7 mm

0.92 carat Orange Sunstone, Oval loose Sunstone from India, Natural Untreated Gem, 8 x 6.1 mm

1.92 carat Brown Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.4 x 6.3 mm

Gemstone Information

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