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.

Read All

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

Source: Bizrate

Overall Rating -> 10

Fine. All emails answered. Excellent service. Nice discount added for orders. Briefly, a very good experience.

Posted By C.J. in February, 2024

Source: Bizrate

Overall Rating -> 10

Great selection

Posted By GHS40 in December, 2023

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

I found it to be easy to browse and easy to use

Posted By Kyle 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

I particularly like information about product provided with purchase.

Posted By Dick in May, 2023

Source: Bizrate

Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

Source: Bizrate

Overall Rating -> 10

Convenient selection, arrival on time

Posted By Alin in February, 2024

Source: Bizrate

Overall Rating -> 10

Found what I was looking for

Posted By Rian in June, 2023

Source: Bizrate

Overall Rating -> 10

Everything fine.

Posted By Hilario in December, 2023

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

Easy to use,I have spent many hours looking at the site

Posted By Skip in November, 2023

Source: Bizrate

Overall Rating -> 10

this was very easy im exited to get my order

Posted By Mr. in April, 2024

Source: Bizrate

Overall Rating -> 10

Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.

Posted By WildwillyfromArizona in August, 2023

Source: Bizrate

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT

183/24-25 Moo 4, Trirat Rd.
T. Chantanimit, A. Muang
Chanthaburi 22000
THAILAND
Phone: 1-800-464-1640
Phone: +66-39601289

STAY IN TOUCH | NEWSLETTER

*You're signing up to receive GemSelect promotional email.

Switch to Mobile Version

Reproduction (text or graphics) without the express written consent of GemSelect.com (SETT Company Ltd.) is strictly prohibited.

252

Gemstones A-Z

Buy Octagon Shape 7x5 mm Gems

0.88 ct Black Diamond, 5.6 mm Diamond Cut From India

0.43 carat Orange Spessartite Garnet, Oval loose Spessartite Garnet from Mozambique, Natural Untreated Gem, 4.7 x 3.7 mm

27.98 carat Pear Psilomelane Dendrite, loose Certified Psilomelane Dendrite from Mexico, Natural Untreated Gem, 29.2 x 26.3 mm

2.21 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gems, 6.1 x 6.1 mm

4.59 ct Oval Cut Strawberry Quartz, 10 x 7.9 mm From Russia

7.3 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 11.2 x 9 mm

3.31 ct Fancy Fire Agate, 10.3 x 9.5 mm From Mexico

3.35 carat Pear Larimar, loose Certified Larimar from the Dominican Republic, Natural Untreated Gem, 13.1 x 9.2 mm

2.03 ct Cushion Cut Peridot, 9.1 x 6.7 mm From Myanmar

8.3 ct Octagon Cut Smoky Quartz, 12 x 11.9 mm From Brazil

15.22 carat Ammolite, loose Certified Ammolite from Canada, Natural Gem, 20.9 x 13.3 mm

20.08 ct Cushion Jasper, 23.9 x 15.9 mm From India

0.28 carat Oval Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gem, 5.1 x 3.1 mm

48.59 carat Pear Charoite, loose Certified Charoite from Russia, Natural Untreated Gem, 37.4 x 25.3 mm

3.16 ct Square Cut Rainbow Moonstone, 3 x 2.9 mm From India

2.42 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6 x 3 mm

3.81 carat Yellow Citrine, Oval loose Citrine from Brazil, Natural Untreated Gem, 12.1 x 10 mm

2.39 carat Orange Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Untreated Gem, 7.6 mm

3.23 carat Carved Leaf Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gem, 12.4 x 8.2 mm

1.8 carat Oval Demantoid Garnet, loose Certified Demantoid Garnet from Namibia, Natural Untreated Gems, 5.1 x 4.2 mm

5.91 ct Round Agate, 10.1 mm From Indonesia

0.93 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from the United States, Natural Untreated Gems, 6.7 x 4.2 mm

6.16 ct Oval Pietersite, 15.5 x 11.4 mm From Namibia

1.19 carat Orange Zircon, Emerald Cut loose Zircon from Tanzania, Natural Untreated Gem, 6.2 x 4.3 mm

9.01 ct Odd Shaped Druzy Variscite, 21.7 x 15.5 mm From China

7.2 ct Round Rutile Quartz, 10.1 mm From India

33.67 ct Round Tiger's Eye Matrix, 23.2 mm From Mexico

0.47 carat London Blue Topaz, Marquise-Cut loose Topaz from Brazil, Natural Gem, 7 x 3.4 mm

0.83 carat Round Ruby, loose Certified Ruby from Myanmar, Natural Gem, 5.4 mm

0.79 carat Green Sapphire, Oval loose Sapphire from Tanzania, Natural Gem, 6.8 x 5.1 mm

2.02 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 8.1 x 6.1 mm

1.78 ct Loose Orange Hessonite Garnet, 7.9 x 6.6 mm Oval Cut From Madagascar

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT