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 -> 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

Easy to find the stones I was looking for. Always good quality stones

Posted By Erin in June, 2023

Source: Bizrate

Overall Rating -> 9

Overall good, shipping prices just seem a little on the high side.

Posted By Steve in August, 2023

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Overall Rating -> 10

The website design is a bit finicky for mobile, but Im sure its most likely just a mobile issue. Amazing selection of products, great prices.

Posted By Kuba in December, 2023

Source: Bizrate

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

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

Posted By MJC in January, 2024

Source: Bizrate

Overall Rating -> 10

Easy to use website, made it very easy to buy. Will shop here again.

Posted By Bjorn in January, 2024

Source: Bizrate

Overall Rating -> 10

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

Selection and purchasing online was very easy

Posted By Aggy in January, 2024

Source: Bizrate

Overall Rating -> 10

I loved the opportunity to shop on a website that I could trust 👍

Posted By Will J. Lover in September, 2023

Source: Bizrate

Overall Rating -> 10

Great selection and excellent website.

Posted By JBW in October, 2023

Source: Bizrate

Overall Rating -> 10

love yall

Posted By Rock hunter in August, 2023

Source: Bizrate

Overall Rating -> 10

Very pleased with shopping on this site. It's easy to navigate and information about gemstones is very good.

Posted By Kate in December, 2023

Source: Bizrate

Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

Source: Bizrate

Overall Rating -> 10

first time here sooooooooooo we will seeeee!!!!! so far so good!!!!!!

Posted By Seastone 56 in October, 2023

Source: Bizrate

Gemstones A-Z

Buy Octagon Shape 7x5 mm Gems

13.27 ct Oval Pietersite, 20 x 15.1 mm From Namibia

0.95 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.3 x 5.3 mm

0.69 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 9.6 x 4.3 mm

1.43 ct Oval Cut Fire Opal, 9.2 x 6.9 mm From Mexico

74.08 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 44.9 x 29.1 mm

2.01 carat Marquise Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 9.9 x 5.2 mm

0.88 ct Yellow Morganite, 6.1 x 6 mm Cushion Cut From Afghanistan

8.42 ct Oval Boulder Opal, 18.8 x 13.8 mm From Australia

4.26 carat Sky Blue Topaz, Pear Shape loose Topaz from Brazil, Natural Gems, 7 x 5 mm

37.59 ct Oval Rhodochrosite, 31.7 x 16.2 mm From South Africa

49.58 ct Oval Ruby-Zoisite, 33.8 x 20.9 mm From Tanzania

2.08 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 9.3 x 7.6 mm

1.92 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7.1 x 7.1 mm

4.26 ct Odd Shaped Smoky Quartz, 10.1 x 10 mm From Brazil

0.35 ct Loose Orange Sapphire, 4.4 x 4.4 mm Heart Cut From Tanzania

11.87 carat Pear Seraphinite, loose Certified Seraphinite from Russia, Natural Untreated Gems, 14 x 9.9 mm

0.54 ct Blue Kyanite, 3.8 mm Round Cut From Nepal

5.84 carat Yellow Citrine, Round loose Citrine from Brazil, Natural Untreated Gem, 11.8 mm

15.37 ct Baguette Rainbow Moonstone, 19.5 x 10.7 mm From the United States

8.46 ct Round Rutile Quartz, 11 mm From India

0.76 ct Loose Purple Sapphire, 4.9 x 4 mm Oval Cut From Madagascar

3.82 carat White Zircon, Diamond-Cut loose Zircon from Colombia, Natural Gems, 7 mm

16.56 carat Pear Fossil Coral, loose Certified Fossil Coral from Indonesia, Natural Untreated Gems, 19.3 x 12.1 mm

0.45 carat Blue Sapphire, Trillion-Cut loose Sapphire from Madagascar, Natural Gem, 4.7 x 4.6 mm

10.77 ct Marquise Slice Ruby in Fuchsite, 17.8 x 8 mm From Ethiopia

25.62 ct Cushion Fossil Coral, 17.8 x 12.4 mm From Indonesia

12.64 ct Round Cut Smoky Quartz, 16.7 mm From Brazil

0.46 ct Pink Spinel, 4.5 x 3.7 mm Cushion Cut From Tanzania

2.44 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7.2 x 5.1 mm

64.04 carat Bi-color Ametrine, Pear Shape loose Ametrine from Brazil, Natural Untreated Gem, 30.1 x 22.4 mm

2.49 carat Pink Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 8.9 x 6.2 mm

43.05 carat Pear Jasper, loose Certified Jasper from Indonesia, Natural Untreated Gem, 34.7 x 26.7 mm

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