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

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

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 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

Found what I was looking for

Posted By Rian in June, 2023

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Overall Rating -> 9

I was in the market for birthstones for a lil gift project im doing. I'm no expert in gems or what not but the quality as far as i can tell seems to be spot on.

Posted By PixelComposer in January, 2024

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Overall Rating -> 10

great. thank you

Posted By Carrotroller in July, 2023

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Overall Rating -> 10

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

Posted By Genia in January, 2024

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Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

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Overall Rating -> 10

I am excited for my first order, search tools were a great help to find the sapphire I needed for my next project! Thank you

Posted By Sue in April, 2023

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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

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Overall Rating -> 10

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

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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 -> 10

My overall interaction with your website was pleasant, as always.

Posted By RJ in April, 2024

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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

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

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Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

1.54 ct Blue Apatite, 5.7 x 4 mm Oval Cut From Madagascar

1.52 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.1 x 6.1 mm

0.58 ct Loose Purple Sapphire, 6.7 x 4.4 mm Oval Cut From Madagascar

0.52 ct Loose Orange Sapphire, 5.8 x 4.1 mm Oval Cut From Tanzania

0.72 ct Loose Orange Sapphire, 5.1 mm Round Cut From Tanzania

3.49 carat Yellow Citrine, Cushion loose Citrine from Brazil, Natural Untreated Gem, 11 x 8.6 mm

0.97 ct Octagon Cut Color-Change Diaspore, 7.3 x 4.8 mm From Turkey

17.63 ct Round Checkerboard Labradorite, 16.1 mm From Madagascar

32.71 ct Cushion Coral, 20.7 x 14.4 mm From Indonesia

45.47 ct Cushion Charoite, 28.4 x 22.6 mm From Russia

1 carat Marquise Cut Ruby, loose Certified Ruby from Myanmar, Natural Gem, 10.2 x 4.9 mm

0.88 carat Emerald Cut Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.1 x 4.8 mm

7.83 ct Octagon Cut Rose Quartz, 12 x 11.8 mm From South Africa

149.36 ct Fancy Rhodochrosite, 51.1 x 31.1 mm From South Africa

3.16 ct Green Apatite, 9 x 9 mm Asscher Cut From Madagascar

0.75 carat Oval Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 6.1 x 4.7 mm

2.29 carat Blue Sapphire, Briolette with Hole loose Sapphire from Sri Lanka, Natural Gems, 4.7 mm

3.67 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 4 mm

8.92 ct Oval Star Moonstone, 15.6 x 10.8 mm From India

0.67 ct Loose Blue Kyanite, 3.7 mm Round Cut From Nepal

2.43 carat Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 9.1 x 8.5 mm

1.91 ct Orange Sunstone, 9.2 x 7.4 mm Oval Cut From India

0.78 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6 x 4.1 mm

2.97 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.1 x 9.9 mm

0.56 carat Purple Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 6.9 x 5 mm

47.11 ct Cushion Jasper, 29.9 x 23.1 mm From Indonesia

23.54 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 20 x 15 mm

1.73 ct Green Sphene, 7.5 x 6.4 mm Oval Cut From Sri Lanka

19.75 ct Druzy Citrine, 19.8 x 11.1 mm From Uruguay

4.52 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4 x 4 mm

0.09 ct Black Diamond, 2 mm Diamond Cut From India

3.11 carat White Opal, Oval loose Opal from Australia, Natural Untreated Gem, 13.3 x 9.7 mm

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