Calibrated 7 x 5 mm Octagon Shape 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 7 x 5 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 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

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Overall Rating -> 10

Great experience! First time buyer

Posted By Todi89 in February, 2024

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Overall Rating -> 10

The site was easy to shop and the payment was secure. I’m looking forward to receiving my order!

Posted By JAB93 in June, 2023

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Overall Rating -> 10

this was very easy im exited to get my order

Posted By Mr. in April, 2024

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Overall Rating -> 10

Love Gem select. great gems for the price. Can't beet them

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Overall Rating -> 10

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Overall Rating -> 10

Everything fine.

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Overall Rating -> 10

it was good

Posted By Bobk in January, 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 -> 9

I am of the opinion that the company gem select cares about the product beautiful gems it sells and the cost of the gem I purchased was small i was treated as if it cost a lot of money and product was described in detail and i felt good about the little stones i had ordered.

Posted By Sparkle in March, 2024

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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

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

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Overall Rating -> 10

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024

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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

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

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Gemstones A-Z

Buy Octagon Shape 7x5 mm Gems

1.06 ct Blue Kyanite, 7.1 x 4.9 mm Oval Cut From Nepal

2.56 carat Pear Prehnite, loose Certified Prehnite from South Africa, Natural Untreated Gem, 9.4 x 7.5 mm

3.67 ct Yellow Quartz, 9.1 x 9 mm Carved From Brazil

1.13 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 6.5 x 5.8 mm

53.13 ct Green Agate, 29.2 x 22.9 mm Oval Cut From India

2.54 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.8 mm

0.86 ct Yellow Beryl, 8.1 x 6 mm Oval Cut From Madagascar

0.74 ct Loose Yellow Sapphire, 4.4 x 4.4 mm Cushion Cut From Tanzania

0.67 ct Yellow Sphalerite, 5.5 x 4.3 mm Oval Cut From Spain

6.11 ct Blue Star Sapphire, 6.9 x 5.1 mm Oval Cut From Thailand

0.62 carat Purple Sapphire, Pear Shape loose Sapphire from Tanzania, Natural Gem, 8.1 x 3.9 mm

1.38 ct Loose Pink Tourmaline, 6.5 mm Round Cabochon From Mozambique

0.91 ct Oval Cut Peridot, 7 x 5.1 mm From China

1.76 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 7.2 x 7 mm

12.05 carat Pear Charoite, loose Certified Charoite from Russia, Natural Untreated Gem, 28.2 x 12.7 mm

0.58 ct Loose Violet Sapphire, 5.7 x 4.1 mm Oval Cut From Tanzania

5.31 ct Orange Sunstone, 13.9 x 10 mm Oval Cut From India

91.49 ct Odd Shaped Druzy Citrine, 42.7 x 25.7 mm From Uruguay

2.61 carat Carved Leaf Ruby, loose Certified Ruby from Madagascar, Natural Gem, 14.2 x 9.1 mm

0.22 carat Oval Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 5 x 3.1 mm

28.22 ct Pencil Cut Strawberry Quartz, 32.3 x 10.7 mm From Russia

3.03 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.9 x 4.8 mm

1.95 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 8 x 6.1 mm

3.66 carat Yellow Citrine, Cushion loose Citrine from Brazil, Natural Untreated Gem, 11.1 x 9.1 mm

1.8 carat Blue Green Grandidierite, Pear Shape loose Grandidierite from Madagascar, Natural Untreated Gem, 9.3 x 7.8 mm

51.05 ct Cushion Opal in Matrix, 29.7 x 28.7 mm From Honduras

2.92 carat Square Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 4.1 x 4.1 mm

1.15 carat Oval Ruby, loose Certified Ruby from Myanmar, Natural Gem, 7.2 x 5.3 mm

1.4 carat Orange Hessonite Garnet, Baguette Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.1 x 5 mm

2.78 carat Yellow Citrine, Emerald Cut loose Citrine from Brazil, Natural Untreated Gem, 9.4 x 9.3 mm

5.87 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 14.9 x 9.8 mm

0.9 ct Loose Pink Sapphire, 5.1 x 4.1 mm Oval Cut From Madagascar

Gemstone Information

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Gemstone EDUCATION

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