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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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

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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.

Posted By Bob in November, 2023

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Overall Rating -> 10

I enjoyed browsing though different varieties of rubies. I felt that the experience was simple and easy to navigate!

Posted By Daws in July, 2023

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Overall Rating -> 10

I’ve enjoyed purchasing stones from this site. It’s convenient and fairly priced.

Posted By Chico in May, 2023

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Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

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Overall Rating -> 10

Super easy to do business for great products.

Posted By BoBBy in January, 2024

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Overall Rating -> 10

Purchased for my granddaughter she was very pleased with it.

Posted By Charlie in April, 2024

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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.

Posted By ChiChi in January, 2024

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Overall Rating -> 10

Everything fine.

Posted By Hilario in December, 2023

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Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

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Overall Rating -> 10

Easy and fast

Posted By Mark in February, 2024

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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

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 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

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

Posted By Apps in September, 2023

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Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

0.43 ct Loose Pink Sapphire, 5.1 x 4 mm Oval Cut From Madagascar

0.39 ct Loose Pink Sapphire, 5.8 x 4.1 mm Oval Cut From Madagascar

3.61 ct Round Checkerboard Smoky Quartz, 8 mm From Brazil

1.32 ct Round Tiger's Eye, 6.6 mm From Thailand

9.37 ct Odd Shaped Druzy Variscite, 27.3 x 11.6 mm From China

5.38 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.1 x 10.2 mm

7.04 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18.3 x 9.4 mm

4.85 ct White Moonstone, 9.9 x 7.9 mm Oval Cut From India

11.47 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 16.2 x 12.1 mm

3.02 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gem, 11.7 x 9.7 mm

0.87 ct Blue Kyanite, 7.1 x 4.9 mm Oval Cut From Nepal

0.64 carat Orange Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6 x 4 mm

10.74 ct Loose Pear Dendritic Agate, 19.9 x 15.3 mm From India

3.77 ct Asscher Cut Rose Quartz, 9.3 x 9.2 mm From South Africa

1.46 ct Loose White Sapphire, 2.2 x 2.1 mm Princess Cut From Madagascar

2.07 ct Loose Oval Cut Black Opal, 12.1 x 9.2 mm From Ethiopia

8.65 ct Green Amazonite, 18.9 x 10.2 mm Marquise Cut From Madagascar

28.5 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 24.9 x 16 mm

18.56 ct Oval Cat's Eye Opal, 19.6 x 17.3 mm From Brazil

1.24 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 15.7 x 3.2 mm

1.76 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.1 x 6.5 mm

7.08 carat Carved Cushion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.4 x 11.8 mm

0.54 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.9 x 4.1 mm

0.85 ct Octagon Cut Color-Change Diaspore, 5.6 x 5.2 mm From Turkey

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

1.94 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.9 x 4 mm

8.85 carat Oval Star Garnet, loose Certified Star Garnet from India, Natural Untreated Gem, 11.3 x 9.2 mm

2.55 carat London Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gems, 7 x 3.6 mm

9.48 carat Black Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 14.5 x 9.4 mm

3.9 ct Round Checkerboard Smoky Quartz, 8 mm From Brazil

1.4 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.9 x 6.9 mm

6.79 ct Oval Quartz Cat's Eye, 10.6 x 9.7 mm From Sri Lanka

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