Calibrated 14 x 12 mm Octagon Shape Gemstones from 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 Octagon shape / Emerald-Cut, faceted and cabochon gems available now in 14 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 website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 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

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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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Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023

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Overall Rating -> 10

Love the variety of stones, sizes and the prices

Posted By Dorita in March, 2024

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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

Source: Bizrate

Overall Rating -> 10

I have used Gem Select many times over the past 10 years and have always been happy with the product & services

Posted By Ordain in August, 2023

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Overall Rating -> 10

Everything was fine.

Posted By Matt in March, 2024

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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 -> 9

making my own jewelry for my birth stone

Posted By LoveGeo in July, 2023

Source: Bizrate

Overall Rating -> 9

GemSelect has a fantastic assortment of Semi-precious stones. I have not found any other web site with the variety you have.

Posted By RobDill in August, 2023

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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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

Source: Bizrate

Overall Rating -> 10

Great website and information

Posted By Moonshot in December, 2023

Source: Bizrate

Overall Rating -> 10

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023

Source: Bizrate

Gemstones A-Z

Buy Octagon Shape 14x12 mm Gems

6.42 carat Pear Rainbow Moonstone, loose Certified Rainbow Moonstone from the United States, Natural Untreated Gem, 16.8 x 11.3 mm

6.24 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 14.1 x 10.1 mm

4.87 ct Round Cut Smoky Quartz, 11.7 mm From Brazil

0.84 carat Violet Sapphire, Pear Shape loose Sapphire from Madagascar, Natural Gem, 6.1 x 5 mm

0.71 carat Red Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 6 x 4.7 mm

0.7 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.2 x 4.2 mm

1.44 carat Pink Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 7.1 x 6.3 mm

2.24 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 9 x 7.2 mm

4.76 ct Green Jade, 12.4 x 10.4 mm Oval Cut From Myanmar

2.91 carat Sky Blue Topaz, Heart loose Topaz from Brazil, Natural Gem, 9.2 x 9 mm

0.11 ct Black Diamond, 2.3 mm Diamond Cut From India

13.48 carat Pear Bloodstone, loose Certified Bloodstone from Madagascar, Natural Untreated Gem, 17.6 x 12.4 mm

7.47 ct Oval Quartz Cat's Eye, 12.3 x 10.4 mm From Sri Lanka

2.31 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.6 x 7.5 mm

1.64 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 6.2 x 4.2 mm

2.03 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 9.8 x 4.9 mm

0.48 ct Loose Purple Sapphire, 6 x 4.8 mm Odd Shaped From Tanzania

1.87 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 11 x 7.8 mm

2.81 carat Yellow Citrine, Marquise Cut loose Citrine from Brazil, Natural Untreated Gem, 15 x 7.1 mm

0.8 carat Oval Peridot, loose Certified Peridot from China, Natural Untreated Gem, 7 x 4.9 mm

1.46 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 4.8 x 3 mm

4.16 carat Blue Green Fluorite, Oval loose Fluorite from India, Natural Untreated Gem, 10 x 7.8 mm

1.41 carat London Blue Topaz, Square loose Topaz from Brazil, Natural Gems, 5.1 x 5 mm

18.44 ct Cushion Jasper, 24.9 x 17.1 mm From Indonesia

0.2 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 3.4 mm

13.52 carat Pear Checkerboard Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gems, 18.2 x 13.3 mm

0.6 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 5.1 x 3 mm

4.43 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.1 x 10 mm

34.06 ct Carved Ruby-Zoisite, 21.7 x 15.4 mm From Tanzania

4.83 carat Round Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.8 mm

6.96 ct Marquise Ruby-Zoisite, 22 x 9.3 mm From Tanzania

40.64 ct Green Jadeite, 28.1 x 22.5 mm Oval Cut From Myanmar

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