Calibrated 9 x 7 mm Octagon / Emerald-Cut Natural 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 Octagon shape / Emerald-Cut, faceted and cabochon gems available now in 9 x 7 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 FOUND WHAT I WANT IT

Posted By GABY in March, 2024

Source: Bizrate

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

Source: Bizrate

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

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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Overall Rating -> 8

purchased birthstones to be mounted into stud earrings as a gift for a friend's gift

Posted By MI photo in May, 2023

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Overall Rating -> 10

I have received emails for about a year and today is the condition that had me decide on the purchase

Posted By Tim in April, 2024

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Overall Rating -> 10

I bought a small ring green so I may practice my jewelry making.

Posted By HairyOtter in July, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

Posted By Nikki J in September, 2023

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Overall Rating -> 9

Easy to use. Limited supply of higher quality gemstones.

Posted By Newfguy in February, 2024

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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

Overall Rating -> 8

I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.

Posted By Mark in March, 2024

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

Everything was fine.

Posted By Matt in March, 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

Source: Bizrate

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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Gemstones A-Z

Buy Octagon Shape 9x7 mm Gems

3.02 ct Green Agate, 9.3 x 7.5 mm Oval Cut From India

17.16 ct Oval Pietersite, 21.6 x 17.1 mm From Namibia

35.77 ct Octagon Concave Cut Smoky Quartz, 18 x 17.7 mm From Brazil

1.16 ct Oval Sillimanite Cat's Eye, 6.4 x 5 mm From Madagascar

1.21 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 9.9 x 6.8 mm

3.16 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.6 mm

1.92 ct Cushion Cut Peridot, 8.1 x 6.7 mm From Myanmar

6.01 ct Blue Green Grandidierite, 12.7 x 10.1 mm Oval Cut From Madagascar

125.15 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 38.9 x 28.4 mm

6.06 ct Loose Baguette Tiger's Eye, 12 x 10.1 mm From Thailand

0.48 ct Loose Pink Sapphire, 5.2 x 4 mm Oval Cut From Madagascar

1 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 6.9 x 5 mm

10.59 carat Yellow Quartz, Pear Shape loose Quartz from Brazil, Natural Gem, 18.9 x 13.6 mm

1.37 carat Square Rhodolite Garnet, loose Certified Rhodolite Garnet from Mozambique, Natural Untreated Gems, 5 x 4.9 mm

2.1 ct Round Labradorite, 6.1 mm From Madagascar

1.5 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gems, 3.6 mm

24.46 ct Oval Rainbow Moonstone, 26.8 x 16 mm From the United States

0.85 ct Loose Yellow Sapphire, 7.3 x 4.6 mm Oval Cut From Tanzania

21.67 ct Brown Jasper, 33 x 9.2 mm Pencil Cut From India

3.02 carat White Topaz, Cushion loose Topaz from Brazil, Natural Untreated Gems, 4.6 x 4.5 mm

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

2.82 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.9 x 4.9 mm

13.22 ct Oval Star Ruby, 14.9 x 12.6 mm From Madagascar

1.62 ct Round Cut Strawberry Quartz, 8 mm From Russia

1.58 ct Loose White Sapphire, 4.5 mm Diamond Cut From Madagascar

7.84 carat Pear Checkerboard Labradorite, loose Certified Labradorite from Madagascar, Natural Untreated Gem, 20.1 x 14.7 mm

3.38 ct Oval Prehnite, 9.6 x 8.3 mm From South Africa

0.52 ct Purple Spinel, 5 mm Round Cut From Tanzania

1.31 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 9.7 x 7.6 mm

3.46 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7.1 x 5.2 mm

4.86 carat Green Tourmaline, Carved Leaf loose Tourmaline from Mozambique, Natural Untreated Gem, 14.6 x 8.7 mm

1.6 carat Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 9.1 mm

Gemstone Information

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