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

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

Source: Bizrate

Overall Rating -> 10

After having looked at other purchasing sites, this is my first choice.

Posted By MJC in January, 2024

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Overall Rating -> 10

Very good customer service. I had an issue on my end with shipping and I received a response the next day!

Posted By Orphanboy in December, 2023

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Overall Rating -> 10

Overall, the whole process was just great.

Posted By Thatoneguy in August, 2023

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Overall Rating -> 10

The website is well organized and works fast forward and back. Plenty of filters. Each gem is described in detail and you receive the one pictured. Gem material info and sources available. I would like to see more specifics on sources besides country- at least region or state and in the US with Turquiose which mine. Thanks!

Posted By Orchidisle in February, 2024

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Overall Rating -> 9

My first purchase went well. I will purchase more gems in the future.

Posted By NoHalalAl in March, 2024

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Overall Rating -> 10

I have started a small gem brokerage. I find stones to meet clients needs. Gemselect has helped me find what people what.

Posted By Pirates Bounty in April, 2024

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Overall Rating -> 10

Very Good

Posted By Julian in July, 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

Source: Bizrate

Overall Rating -> 8

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

Posted By Ralli in August, 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

Pleasant.

Posted By Mk in November, 2023

Source: Bizrate

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

Posted By EarthDeep in February, 2024

Source: Bizrate

Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

Source: Bizrate

Overall Rating -> 10

Todo muy bien en la compra ahora esperar recibir el pedido.

Posted By MAGSMX in August, 2023

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Gemstones A-Z

Buy Oval Shape 16x12 mm Gems

6.76 ct Asscher Cut Rose Quartz, 9.2 x 9.1 mm From South Africa

6.04 ct Fancy Fire Agate, 13.1 x 11.5 mm From Mexico

11.54 ct Yellow Quartz, 15.8 x 15 mm Carved From Brazil

3.04 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gems, 4.1 x 4 mm

1.08 ct Green Sphene, 6.2 x 5.3 mm Oval Cut From Sri Lanka

13.3 ct Yellow Quartz, 16.2 mm Round Concave Cut From Brazil

20.73 ct Oval Obsidian, 31.8 x 18.9 mm From the United States

45.7 carat Uvarovite Garnet Drusy, loose Certified Uvarovite Garnet Drusy from Russia, Natural Untreated Gem, 34.2 x 19.9 mm

19.59 carat Pear Psilomelane Dendrite, loose Certified Psilomelane Dendrite from Mexico, Natural Untreated Gem, 24 x 21.9 mm

22.42 ct Pencil Cut Jasper, 40.2 x 8.9 mm From Indonesia

2.49 ct Round Cut Rainbow Moonstone, 9.1 mm From the United States

2.7 ct Oval Strawberry Quartz, 9.1 x 7.2 mm From Russia

0.77 ct Loose Yellow Citrine, 10.1 x 4.1 mm Oval Buff Top From Brazil

3.44 ct Diamond Cut Andalusite, 3.5 mm From Brazil

2.99 ct Asscher Cut Rose Quartz, 9.2 x 9.1 mm From South Africa

113.87 carat Pear Dendritic Agate, loose Certified Dendritic Agate from India, Natural Untreated Gem, 58.6 x 41.1 mm

0.48 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6.1 x 4.2 mm

2.01 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 8.2 x 7.2 mm

1.27 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.8 x 6.2 mm

25.12 ct Fancy Obsidian, 28.2 x 26.3 mm From India

15.21 carat Swiss Blue Topaz, Cushion loose Topaz from Brazil, Natural Gem, 21.2 x 11.4 mm

1.79 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.6 x 7.1 mm

14.44 carat Cameo Mother of Pearl, loose Certified Mother of Pearl from China, Natural Gem, 25.1 mm

2.1 ct Cushion Cut Peridot, 7.9 x 6.6 mm From Myanmar

2.33 ct Loose Blue Green Sapphire, 4.9 mm Briolette From Madagascar

6.66 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.9 x 10.1 mm

1.82 ct Blue Kyanite, 8.1 x 6.2 mm Oval Cut From Nepal

1.06 carat Orange Sunstone, Oval loose Sunstone from India, Natural Untreated Gem, 8.1 x 6 mm

33.17 ct Oval Rainbow Moonstone, 30.7 x 16.3 mm From the United States

1.44 ct Oval Smoky Quartz, 8.1 x 6.1 mm From Brazil

30.9 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 22.1 x 17.4 mm

0.58 carat Trillion Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gem, 5.4 x 5.1 mm

Gemstone Information

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