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 -> 9

making my own jewelry for my birth stone

Posted By LoveGeo in July, 2023

Source: Bizrate

Overall Rating -> 10

Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.

Posted By Dee in September, 2023

Source: Bizrate

Overall Rating -> 10

it was good

Posted By Bobk in January, 2024

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Overall Rating -> 10

Everything was fine.

Posted By Matt in March, 2024

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Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

Posted By Jen in August, 2023

Source: Bizrate

Overall Rating -> 10

I was looking for a source for affordable genuine gemstones for my grandson who is currently very interested in rocks and gems. I was quite surprised and pleased to find GemSelect and finding the right stones at the right price couldn't have been simpler.

Posted By Papa in December, 2023

Source: Bizrate

Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

Source: Bizrate

Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

Overall Rating -> 10

Love the variety of stones, sizes and the prices

Posted By Dorita in March, 2024

Source: Bizrate

Overall Rating -> 9

Everything was good but since I am still new I was surprised at how small the stones where.

Posted By Js in May, 2023

Source: Bizrate

Overall Rating -> 10

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

Posted By Phoenix in March, 2024

Source: Bizrate

Overall Rating -> 9

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel in July, 2023

Source: Bizrate

Overall Rating -> 10

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

11.3 ct Round Cut Smoky Quartz, 15.8 mm From Brazil

13.88 ct Carved Rose Quartz, 16.4 x 15.6 mm From Brazil

39.76 ct Oval Rhodochrosite, 33.5 x 18.1 mm From South Africa

1.71 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 10.1 x 5 mm

3.79 ct Yellow Quartz, 9.7 x 9.5 mm Carved From Brazil

2.33 ct Oval Strawberry Quartz, 9.1 x 7.3 mm From Russia

0.41 ct Blue Kyanite, 3.6 mm Round Cut From Nepal

1.35 carat Trillion Mystic Quartz, loose Certified Mystic Quartz from Brazil, Natural Gems, 6.2 x 6 mm

6.09 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 11.7 x 9.5 mm

2.84 ct Yellow Quartz, 13 x 8.1 mm Marquise Concave Cut From Brazil

1.03 ct Cushion Cut Peridot, 8.1 x 6 mm From China

2.55 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gems, 6.9 x 5 mm

21.75 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 19.8 x 15 mm

27.94 ct Oval Bloodstone, 28.8 x 20.3 mm From Madagascar

3.66 ct Loose Oval Star Ruby, 9 x 8.4 mm From Madagascar

1.54 ct Orange Moonstone, 7.1 x 7.1 mm Cushion Cut From India

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

0.32 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.9 mm

5.27 ct Loose Oval Star Ruby, 9.2 x 8.6 mm From Madagascar

9.71 ct Loose Oval Lapis Lazuli, 14.1 x 10.7 mm From Afghanistan

0.57 carat Oval Color-Change Garnet, loose Certified Color-Change Garnet from Tanzania, Natural Untreated Gem, 5.9 x 4.1 mm

10.64 ct White Quartz, 14.4 x 14.3 mm Asscher Cut From Brazil

36.6 carat Bi-color Fluorite, Oval loose Fluorite from India, Natural Untreated Gem, 22.6 x 17.4 mm

24.59 ct Square Moss Agate, 16.4 x 16 mm From India

3.19 carat Orange Zircon, Emerald Cut loose Zircon from Tanzania, Natural Untreated Gems, 6.2 x 4.2 mm

14.82 ct Pink Kunzite, 15.9 x 12.3 mm Odd Shaped From Afghanistan

2.72 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.1 mm

10.19 carat Cameo Mother of Pearl, loose Certified Mother of Pearl from China, Natural Gem, 25.1 mm

2.21 ct Cushion Cut Peridot, 7.8 x 7.3 mm From Myanmar

0.97 ct Octagon Cut Color-Change Diaspore, 6.3 x 4.6 mm From Turkey

19.49 ct Oval Rainbow Moonstone, 20.7 x 15.4 mm From the United States

0.5 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 5.8 x 4 mm

Gemstone Information

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