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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Gemstone Information

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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 -> 9

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024

Source: Bizrate

Overall Rating -> 10

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023

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Overall Rating -> 10

Everything fine.

Posted By Hilario in December, 2023

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Overall Rating -> 10

the searching format was easy to find what i needed. It helped to be able to sort Lowest price to Highest because i wasnt looking to spend too much but i did want an actual stone and not imitation.

Posted By PixelComposer in January, 2024

Source: Bizrate

Overall Rating -> 10

The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

Posted By Jen in August, 2023

Source: Bizrate

Overall Rating -> 10

I searched for the item by description and millimeter and had my choice come up and then made the best selection.

Posted By Tim in April, 2024

Source: Bizrate

Overall Rating -> 10

Love the variety of stones, sizes and the prices

Posted By Dorita in March, 2024

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Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 2023

Source: Bizrate

Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

Source: Bizrate

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 found it to be easy to browse and easy to use

Posted By Kyle in December, 2023

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Overall Rating -> 9

It went well

Posted By Rob in December, 2023

Source: Bizrate

Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 2023

Source: Bizrate

Overall Rating -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

Source: Bizrate

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Gemstones A-Z

Buy Octagon Shape 9x7 mm Gems

14.5 ct Yellow Quartz, 16 x 15.4 mm Odd Shaped From Brazil

8.66 ct Asscher Cut Smoky Quartz, 12.8 x 10.9 mm From Brazil

0.67 ct Loose Purple Spinel, 5.3 x 5.2 mm Cushion Cut From Tanzania

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

50.87 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 27.4 x 21.4 mm

1.16 carat Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gem, 9.6 x 4.9 mm

2.94 ct Red Andesine Labradorite, 10.3 x 8.2 mm Oval Cut From Congo

1.89 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 8 x 6 mm

0.96 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gems, 4.9 x 4.9 mm

0.97 carat Red Spessartite Garnet, Briolette loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 5.7 mm

11.6 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 21.7 x 12.2 mm

4.99 ct Flower Cut Smoky Quartz, 11.5 x 11.2 mm From Brazil

2.94 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gem, 9.3 x 7 mm

9.48 ct Loose Pear Dendritic Agate, 20.2 x 15.1 mm From India

1.29 ct Black Star Sapphire, 7.5 x 5.7 mm Oval Cut From Thailand

5.25 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.2 x 10.1 mm

5.88 ct Asscher Cut Rose Quartz, 9 x 9 mm From South Africa

1.13 ct Pink Morganite, 7 mm Round Cut From Afghanistan

5.86 ct Fancy Fire Agate, 14.6 x 12.4 mm From Mexico

1.56 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 8.1 x 6 mm

2.3 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5.2 mm

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

9.04 ct Round Rutile Quartz, 13 mm From India

0.74 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 8.5 x 4.9 mm

2.84 ct Loose Oval Cut Mystic Quartz, 11 x 8.9 mm From Brazil

2.05 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gems, 6 x 3.8 mm

19.77 ct Oval Jasper, 17.9 x 13.1 mm From Indonesia

7.06 ct Green Agate, 12.9 x 11.8 mm Oval Cut From India

0.45 carat Round Cabochon Emerald, loose Certified Emerald from Colombia, Natural Gem, 4.6 mm

0.17 ct White Diamond, 2.8 mm Diamond Cut From India

3.49 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 11.2 x 9 mm

1.08 ct Oval Cut Fire Opal, 8 x 6 mm From Mexico

Gemstone Information

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