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 -> 10

Easy to use.

Posted By Hope in March, 2024

Source: Bizrate

Overall Rating -> 10

I was pleased with the selection of gems, the ease of navigating, and the smooth checkout

Posted By JamesMichael781 in September, 2023

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 10

first time here sooooooooooo we will seeeee!!!!! so far so good!!!!!!

Posted By Seastone 56 in October, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 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 site.

Posted By Boru in December, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 9

It was simple and clear to understand.

Posted By Thora007 in December, 2023

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Overall Rating -> 8

I am currently pleased. I like the layout of the website.

Posted By RayPoppa in January, 2024

Source: Bizrate

Overall Rating -> 10

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 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

Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

1.07 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gems, 5 x 5 mm

0.68 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 10.1 x 3.6 mm

8.71 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 18 x 12.1 mm

1.72 carat Yellow Citrine, Trillion Buff Top loose Citrine from Brazil, Natural Untreated Gem, 8.1 x 7.9 mm

0.44 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 5.6 x 4 mm

2.34 ct Marquise Concave Cut Smoky Quartz, 18 x 7 mm From Brazil

2.21 ct Cushion Cut Peridot, 7.9 x 7.6 mm From Myanmar

5.56 ct Asscher Cut Rose Quartz, 11 x 10.9 mm From South Africa

0.65 ct Oval Cut Fire Opal, 7.8 x 6 mm From Mexico

2.48 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 9.4 x 7.4 mm

1.08 ct Oval Sillimanite Cat's Eye, 6.2 x 5.1 mm From Madagascar

4.43 ct Yellow Quartz, 11.2 x 9.1 mm Oval Cut From Brazil

1.34 ct Yellow Beryl, 8.4 x 8 mm Trillion Cut From Madagascar

10.48 ct Octagon Cut Smoky Quartz, 13.3 x 13.2 mm From Brazil

0.3 ct Baguette Cut Iolite, 5 x 3 mm From Madagascar

3.87 carat Square Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 6 mm

0.98 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 10.4 x 5.7 mm

2.65 carat Square Opal, loose Certified Opal from Ethiopia, Natural Untreated Gems, 3.7 x 3.7 mm

0.91 ct Yellow Sphene, 6.4 x 5.3 mm Oval Cut From Sri Lanka

7.75 carat Swiss Blue Topaz, Emerald-Cut loose Topaz from Brazil, Natural Gems, 8.2 x 6.1 mm

0.28 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.8 mm

1.98 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 17.8 x 3.7 mm

2.47 ct Oval Sillimanite Cat's Eye, 7.3 x 4.9 mm From Madagascar

0.3 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 3.8 x 3.8 mm

0.93 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Madagascar, Natural Untreated Gems, 4.2 x 4.1 mm

3.06 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 9 x 6.8 mm

11.08 ct Round Cut Color-Change Fluorite, 14.1 mm From Brazil

33.52 ct Oval Maw-Sit-Sit, 21.4 x 14 mm From Myanmar

1.59 ct Green Sphene, 7.9 x 6 mm Oval Cut From Sri Lanka

2.25 ct Oval Checkerboard Rainbow Moonstone, 7.1 x 6.1 mm From India

8.02 ct Oval Quartz Cat's Eye, 12.9 x 11.4 mm From Sri Lanka

2.9 ct Blue Kyanite, 9.1 x 8.7 mm Oval Cut From Nepal

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