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

Wonderful selection of gems to choose from. Have made many purchases and was only slightly disappointed once.

Posted By Teemo in February, 2024

Source: Bizrate

Overall Rating -> 10

Pleasant.

Posted By Mk in November, 2023

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Overall Rating -> 10

Everything fine.

Posted By Hilario in December, 2023

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Overall Rating -> 10

The website is very easy to use. The search function, filter and sort functions are very helpful.

Posted By Sboro in August, 2023

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Overall Rating -> 10

It was easy to search and find what i wanted

Posted By Gunner in November, 2023

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Overall Rating -> 10

I find the website user friendly.

Posted By Becky in August, 2023

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Overall Rating -> 10

I found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

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Overall Rating -> 10

I have actually done business with them before and was quite satisfied with them then.My Mother collected turtle items and when I saw the Mother of Pearl turtle...I just thought of her and decided to buy it. It's even tinier than I thought, but so adorable!The gemstones I bought are for jewelry for my daughter's birthday.

Posted By Ktreva52 in February, 2024

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

Posted By Phoenix in February, 2024

Source: Bizrate

Overall Rating -> 10

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

Posted By Seastone 56 in October, 2023

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Overall Rating -> 10

Great Job today! No issues!

Posted By Samlovesgems777 in August, 2023

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Overall Rating -> 10

Was easy to search for many gems and mineral stones.Authenticity of natural stones is important, and I feel this site offers some assurance on this.

Posted By DanM in November, 2023

Source: Bizrate

Overall Rating -> 9

It went well

Posted By Rob in December, 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

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Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

3.66 ct Diamond Cut Andalusite, 3.7 mm From Brazil

7.28 ct Pink Moonstone, 15.3 x 15.2 mm Carved From India

1.14 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 10.4 x 4.2 mm

5.46 carat Sky Blue Topaz, Half Drilled Briolette loose Topaz from Brazil, Natural Gems, 8 mm

1.84 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Gem, 8.9 x 7 mm

0.39 carat Violet Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 4.9 x 4.1 mm

1.25 ct Baguette Cut Color-Change Diaspore, 9.5 x 4.2 mm From Turkey

45.67 ct Oval Snowflake Obsidian, 33.1 x 24.5 mm From India

6.11 ct Carved Smoky Quartz, 14.1 x 10.2 mm From Brazil

21.73 carat Pear Shape Lapis Lazuli, loose Certified Lapis Lazuli from Afghanistan, Natural Untreated Gem, 29.3 x 19 mm

4.51 ct Loose Oval Cut Strawberry Quartz, 12.2 x 10 mm From India

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

8.34 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18 x 13 mm

1.95 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 8 x 6.1 mm

2.74 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 12.9 x 8.9 mm

13.42 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.1 x 5.1 mm

0.36 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.1 x 3.9 mm

2.56 ct Octagon Cut Peridot, 5.9 x 4 mm From China

1.22 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 18.6 x 3 mm

1.3 ct Purple Spinel, 6.4 x 5.9 mm Cushion Cut From Tanzania

1.08 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Gem, 9.1 x 7 mm

2.53 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Tanzania, Natural Untreated Gem, 8 x 6.3 mm

21.21 ct Yellow Quartz, 19.9 x 15.8 mm Odd Shaped From Brazil

6.81 carat Pink Mystic Topaz, Pear Shape loose Mystic Topaz from Brazil, Natural Gem, 14.1 x 10 mm

0.15 ct Black Diamond, 3.1 mm Diamond Cut From India

3.66 ct Yellow Agate, 11.3 x 9.4 mm Oval Cut From India

1.89 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 7.9 x 5.9 mm

1.02 carat Pear Shape Chrysoberyl, loose Certified Chrysoberyl from Sri Lanka, Natural Untreated Gem, 7.6 x 5.4 mm

8.85 ct Yellow Quartz, 15.9 x 13.7 mm Star Cut From Brazil

0.41 ct Blue Kyanite, 3.5 mm Round Cut From Nepal

0.95 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gems, 6.8 x 5.2 mm

4.54 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.1 x 4.2 mm

Gemstone Information

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