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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Overall Rating -> 8

I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.

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Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

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Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

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Overall Rating -> 10

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Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

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Overall Rating -> 10

it was good

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Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

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Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

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Overall Rating -> 10

I am excited for my first order, search tools were a great help to find the sapphire I needed for my next project! Thank you

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Overall Rating -> 10

Love Gem select. great gems for the price. Can't beet them

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Overall Rating -> 10

My overall interaction with your website was pleasant, as always.

Posted By RJ in April, 2024

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Overall Rating -> 10

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.

Posted By Ktreva52 in February, 2024

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Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

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Overall Rating -> 10

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Posted By Jeff in November, 2023

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Overall Rating -> 9

So many gorgeous stones! The only "complaint" I have is it's difficult to visualize sizes in mm. Perhaps some way to compare in inches?It has been a long time since I bought stones from Gem select, but the process wasn't too difficult.

Posted By Ktreva52 in February, 2024

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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

27.85 ct Blue Green Grandidierite, 15.8 x 25 mm Odd Shaped From Madagascar

3.14 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gems, 7.7 x 5.7 mm

2.59 ct Loose Orange Moonstone, 14.1 x 6.9 mm Marquise Cut From India

21.31 ct Round Maw-Sit-Sit, 17.1 mm From Myanmar

8.78 ct Oval Cut Mystic Quartz, 12.1 x 10.1 mm From Brazil

1.62 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11 x 6.1 mm

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

0.45 ct Loose Yellow Sapphire, 4.7 x 4.5 mm Heart Cut From Tanzania

0.84 ct Blue Kyanite, 6.4 x 4.3 mm Oval Cut From Nepal

1.43 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 6.1 mm

29.36 ct Carved Rose Quartz, 31.2 x 18 mm From South Africa

3.96 ct Oval Cut Rainbow Moonstone, 9.2 x 7.1 mm From the United States

31.34 ct Oval Pietersite, 30 x 21.9 mm From Namibia

6.86 ct Pear Chrysoprase, 14.5 x 10.9 mm From Madagascar

1.6 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 16.3 x 3.4 mm

4.44 ct Yellow Apatite, 11.6 x 9.1 mm Oval Cut From Madagascar

21.87 ct Oval Fossil Coral, 20.7 x 11.9 mm From Indonesia

0.44 ct Loose Pink Sapphire, 5.8 x 4.2 mm Oval Cut From Madagascar

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

1.26 ct Yellow Beryl, 8.2 x 7.8 mm Trillion Cut From Madagascar

1.58 ct Round Onyx, 7.2 mm From Sri Lanka

9 ct Oval Tiger's Eye, 18.4 x 13.5 mm From India

2.82 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.3 x 9.2 mm

27.23 ct Oval Serpentine, 25.9 x 15.7 mm From the United States

0.71 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.3 x 5.2 mm

30.78 ct Oval Tiger's Eye Matrix, 32.2 x 19.3 mm From Mexico

0.89 carat White Opal, Oval loose Opal from Australia, Natural Untreated Gems, 6.9 x 5.1 mm

13.07 ct Flower Cut Smoky Quartz, 15.6 x 15 mm From Brazil

0.51 carat Pink Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.6 x 4.9 mm

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

12.28 ct Round Cut Color-Change Fluorite, 14.9 mm From Brazil

6.71 ct Fancy Fire Agate, 11.7 x 11.3 mm From Mexico

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