Calibrated 16 x 12 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 16 x 12 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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Gemstone Information

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Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

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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

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Overall Rating -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024

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Overall Rating -> 10

I bought a small ring green so I may practice my jewelry making.

Posted By HairyOtter in July, 2023

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Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 2023

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Overall Rating -> 10

great. thank you

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Overall Rating -> 10

The website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 2023

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Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

Posted By Jaytee in November, 2023

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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

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Overall Rating -> 10

Always have good experience

Posted By Ginnie in September, 2023

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Overall Rating -> 8

Many gems at reasonable pricing

Posted By Skittlebird in May, 2024

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Overall Rating -> 10

Love gemselect

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Overall Rating -> 10

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

Posted By Ray in December, 2023

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Overall Rating -> 9

It went well

Posted By Rob in December, 2023

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Overall Rating -> 10

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

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Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

0.59 ct Loose Yellow Sapphire, 5.9 x 4 mm Oval Cut From Tanzania

2.54 ct Loose Orange Moonstone, 9.1 x 7 mm Cushion Cut From India

1.04 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.8 x 5.8 mm

19.55 ct Oval Jasper, 20.1 x 15.1 mm From Indonesia

1.29 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 6 x 6 mm

5.62 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 4.7 x 4.6 mm

1.26 ct Loose Trillion Concave Cut Mystic Quartz, 7.9 x 7.9 mm From Brazil

1.48 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5 mm

18.71 ct Fancy Jasper, 37 x 15 mm From Indonesia

1.69 carat Heart Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6.1 x 6 mm

1.57 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.8 x 6.5 mm

0.53 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 8.2 x 4.3 mm

2.84 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.5 mm

2.16 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.3 x 9.1 mm

1.73 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

0.38 carat Green Sapphire, Emerald-Cut loose Sapphire from Tanzania, Natural Gem, 5.1 x 3.3 mm

1.4 ct Loose Orange Moonstone, 7.9 x 7.6 mm Trillion Cut From India

1.96 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 12.1 x 8.6 mm

0.94 ct Yellow Beryl, 7.3 x 7.1 mm Trillion Cut From Madagascar

1.97 ct Oval Tiger's Eye, 9 x 7 mm From Thailand

4.35 carat Yellow Citrine, loose Citrine from Brazil, Natural Untreated Gem, 12.3 x 10.4 mm

1.54 ct Pink Morganite, 8.2 x 6.7 mm Oval Cut From Afghanistan

1.45 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 8.2 x 8 mm

4.83 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.8 mm

1.83 carat Pink Tourmaline, Round Cabochon loose Tourmaline from Mozambique, Natural Untreated Gem, 7.2 mm

0.68 ct Purple Spinel, 5 mm Round Cut From Tanzania

3.85 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 6.7 x 6.6 mm

31.17 ct Pencil Cut Strawberry Quartz, 35.6 x 10.5 mm From Russia

28.52 ct Baguette Rainbow Moonstone, 32.1 x 11.4 mm From the United States

0.59 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.1 x 4.1 mm

2.08 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.4 x 6.2 mm

0.38 ct Loose Pink Sapphire, 5.9 x 3.8 mm Oval Cut From Madagascar

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT