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 love GemSelect, photos and details are great.

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Purchased for my granddaughter she was very pleased with it.

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It was simple and clear to understand.

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LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

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The site is very easy to use and I will continue to shop here. The quality is superb

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it was good

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Overall Rating -> 10

Hello: You do have good website. Vast majority of folks would buy the Gems for its spiritual, physical / energy level, emotional level positive aspects. You have only very brief mention of this aspect of each Gem ..may be you can add little bit more about ways to leverage the beneificial effect of each gems i.e. some practical tips.ThanksRupen Patel

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Overall Rating -> 8

Found on a search engine. Scanned inventory and made a small purchase.

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Overall Rating -> 10

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 2023

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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.

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Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

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Overall Rating -> 10

The gems were as described, which is kind of rare these days. I am happy with the purchase, and delevery on time.

Posted By T-bone in October, 2023

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Overall Rating -> 10

Great selection

Posted By GHS40 in December, 2023

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Gemstones A-Z

Buy Oval Shape 12x10 mm Gems

2.62 carat Green Fluorite, Pear Shape loose Fluorite from India, Natural Untreated Gem, 9.9 x 7.7 mm

0.58 carat Green Sapphire, Trillion-Cut loose Sapphire from Madagascar, Natural Gem, 5.8 x 5.4 mm

4.24 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.1 mm

1.83 carat Orange Zircon, Pear Shape loose Zircon from Tanzania, Natural Untreated Gem, 7.4 x 6.7 mm

0.55 ct Pink Spinel, 4.9 x 4.5 mm Cushion Cut From Tanzania

7.65 ct Cushion Tiger's Eye, 13.8 x 11.7 mm From Thailand

5.78 ct Carved Prehnite, 16.3 x 10.9 mm From South Africa

5.46 ct Pink Kunzite, 11 x 7.6 mm Octagon Cut From Afghanistan

0.64 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.2 x 4.2 mm

4.58 ct Yellow Quartz, 12.4 x 12.3 mm Carved From Brazil

0.48 ct Loose Pink Sapphire, 6.6 x 4.9 mm Oval Cut From Tanzania

0.21 carat Orange Spessartite Garnet, Round loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 3.5 mm

5.46 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.2 x 5.2 mm

0.51 ct Loose Purple Sapphire, 4.9 x 3.1 mm Oval Cut From Tanzania

3.19 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.8 x 8.8 mm

0.81 ct Orange Sphalerite, 6 x 4.4 mm Oval Cut From Spain

5.7 ct Rondelle Cut Carnelian, 5.9 x 5.9 mm From India

12.09 ct Oval Pietersite, 18.7 x 12.7 mm From Namibia

10.32 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 18.2 x 10.3 mm

1.24 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 4.5 x 3.6 mm

2.24 carat Yellow Citrine, Trillion loose Citrine from Brazil, Natural Untreated Gem, 9.2 x 9.1 mm

18.98 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 26.1 x 17.4 mm

1.74 ct Orange Moonstone, 7.1 x 7 mm Cushion Cut From India

0.6 ct Loose Yellow Sapphire, 4.3 x 4.2 mm Square Cut From Tanzania

3.58 ct Oval Prehnite, 9.4 x 8.6 mm From South Africa

6.78 ct Trillion Onyx, 9.9 x 9.4 mm From Sri Lanka

2.35 ct Oval Strawberry Quartz, 9.1 x 7.1 mm From Russia

1.31 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 11.4 x 3.7 mm

1.12 ct Yellow Beryl, 8 x 5.9 mm Oval Cut From Madagascar

1.37 carat Orange Hessonite Garnet, Oval loose from Madagascar, Natural Untreated Gem, 7.6 x 6.3 mm

8 ct Oval Strawberry Quartz, 13.5 x 11.2 mm From Russia

3.34 carat Swiss Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 6.1 x 4.2 mm

Gemstone Information

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