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

Always an easy experience using Gem select.

Posted By Jeff in November, 2023

Source: Bizrate

Overall Rating -> 9

I have been buy from you for years

Posted By JohnA in May, 2023

Source: Bizrate

Overall Rating -> 10

Love gemselect

Posted By Joshua Howard in March, 2024

Source: Bizrate

Overall Rating -> 10

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

Source: Bizrate

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

Source: Bizrate

Overall Rating -> 10

blessed be the lord blessed be the saved blessed be the work blessed be the traveled i write down my good times in these stones and when times are gray i can still se the sunny days refract in these stones

Posted By Kickbass.2 in May, 2023

Source: Bizrate

Overall Rating -> 9

The selection and filtering is a little overwhelming, but that's only because there is so much to choose from.

Posted By Kasper in June, 2023

Source: Bizrate

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

I love GemSelect, photos and details are great.

Posted By #1 in February, 2024

Source: Bizrate

Overall Rating -> 8

I am currently pleased. I like the layout of the website.

Posted By RayPoppa in January, 2024

Source: Bizrate

Overall Rating -> 10

Great selection of various gems, easy to navigate site

Posted By Josh in August, 2023

Source: Bizrate

Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

Source: Bizrate

Overall Rating -> 9

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

Posted By Steve in August, 2023

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

Source: Bizrate

Gemstones A-Z

Buy Octagon Shape 7x5 mm Gems

0.83 ct Loose Yellow Sapphire, 5.4 mm Round Cut From Tanzania

0.67 carat Blue Sapphire, Marquise-Cut loose Sapphire from Madagascar, Natural Gem, 8 x 3.9 mm

11.23 ct Yellow Apatite, 16.5 x 13.4 mm Oval Cut From Madagascar

10.58 ct Yellow Quartz, 13.8 mm Carved From Brazil

5.07 carat Swiss Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 6.9 x 5.1 mm

2.19 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 5.9 x 3.8 mm

1.21 carat Orange Hessonite Garnet, Square loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 5.8 x 5.8 mm

3.04 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 7.1 x 5.1 mm

17.25 ct Oval Jasper, 25.4 x 18.7 mm From Indonesia

2.48 carat Emerald Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.8 x 3.8 mm

11.12 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 15.4 x 12 mm

6.24 ct Oval Opal Doublet, 8.2 x 6 mm From Australia

25.56 ct Oval Cat's Eye Aquamarine, 21.6 x 18.5 mm From Madagascar

16.78 carat Black Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 19.4 x 15.1 mm

0.51 ct Loose Purple Sapphire, 4.9 x 3 mm Oval Cut From Tanzania

4.66 carat Pear Shape Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.8 x 9.8 mm

13.29 ct Yellow Quartz, 16 x 15.9 mm Octagon Concave Cut From Brazil

22.63 carat Pear Tiger's Eye, loose Certified Tiger's Eye from Thailand, Natural Untreated Gems, 18 x 12.9 mm

0.64 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gem, 6.1 x 4.1 mm

1.09 carat Oval Ruby, loose Certified Ruby from Madagascar, Natural Gem, 6.7 x 4.9 mm

0.51 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 5.4 x 4.4 mm

7.81 ct Rainbow Pyrite, 16.6 x 11.7 mm From Russia

31.9 ct Multicolor Fossil Coral, 17.7 x 14.2 mm Cushion Cut From Indonesia

0.07 ct Black Diamond, 2 mm Diamond Cut From India

2.51 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 10.1 x 7.8 mm

0.91 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 7.1 x 5.4 mm

1.03 ct Pink Morganite, 8.2 x 5.7 mm Oval Cut From Afghanistan

5.62 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 15.7 x 11.5 mm

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

2.05 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 3.9 x 3 mm

6.17 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gems, 11 x 8.8 mm

16.79 ct Blue Sodalite, 37.9 x 7.9 mm Pencil Cut From Australia

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