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Buy Octagon Shape 6x4 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (154): Octagon Shape 6x4 mm Gems Clear All
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Multicolor Sapphire Gem - 0.7ct Octagon Facet (ID: 444395)

Octagon / Emerald Cut Multicolor Sapphire

0.66 ct (total 2.62ctw)
6 x 4.1 mm
$ 315.87
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4 pcs
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Multicolor Sapphire Gem - 0.7ct Octagon Facet (ID: 444391)

Octagon / Emerald Cut Multicolor Sapphire

0.67 ct (total 2.69ctw)
6.1 x 4 mm
$ 324.31
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4 pcs
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Multicolor Sapphire Gem - 0.7ct Octagon Facet (ID: 444390)

Octagon / Emerald Cut Multicolor Sapphire

0.73 ct (total 2.90ctw)
6.2 x 4.1 mm
$ 349.62
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6 pcs
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Multicolor Sapphire Gem - 0.6ct Octagon Facet (ID: 444235)

Octagon / Emerald Cut Multicolor Sapphire

0.64 ct (total 3.86ctw)
6.1 x 4.1 mm
$ 465.36
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4 pcs
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Multicolor Sapphire Gem - 0.6ct Octagon Facet (ID: 444396)

Octagon / Emerald Cut Multicolor Sapphire

0.59 ct (total 2.34ctw)
6.2 x 4 mm
$ 282.11
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4 pcs
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Multicolor Sapphire Gem - 0.7ct Octagon Facet (ID: 444888)

Octagon / Emerald Cut Multicolor Sapphire

0.65 ct (total 2.58ctw)
6.1 x 4.1 mm
$ 311.04
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279630)

Octagon / Emerald Cut Blue Iolite

0.52 ct (total 3.11ctw)
5.9 x 4 mm
$ 37.32
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4 pcs
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Multicolor Sapphire Gem - 0.6ct Octagon Facet (ID: 444387)

Octagon / Emerald Cut Multicolor Sapphire

0.60 ct (total 2.39ctw)
6.1 x 4.1 mm
$ 288.14
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6 pcs
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Red Pyrope Garnet Gem - 0.6ct Octagon Step Cut (ID: 480927)

Octagon / Emerald Cut Red Pyrope Garnet

0.60 ct (total 3.60ctw)
5.8 x 4 mm
$ 25.20
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6 pcs
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Red Pyrope Garnet Gem - 0.6ct Octagon Step Cut (ID: 480938)

Octagon / Emerald Cut Red Pyrope Garnet

0.55 ct (total 3.31ctw)
5.8 x 3.9 mm
$ 23.17
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279647)

Octagon / Emerald Cut Blue Iolite

0.48 ct (total 2.88ctw)
6 x 3.9 mm
$ 34.56
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5 pcs
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Violet Blue Iolite Gem - 0.6ct Octagon Step Cut (ID: 279579)

Octagon / Emerald Cut Blue Iolite

0.55 ct (total 2.77ctw)
6 x 4 mm
$ 33.24
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Facet (ID: 279633)

Octagon / Emerald Cut Blue Iolite

0.45 ct (total 2.70ctw)
6 x 3.9 mm
$ 32.40
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5 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279569)

Octagon / Emerald Cut Blue Iolite

0.52 ct (total 2.58ctw)
6.1 x 3.9 mm
$ 30.96
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Facet (ID: 279637)

Octagon / Emerald Cut Blue Iolite

0.51 ct (total 3.08ctw)
6 x 4 mm
$ 36.96
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1 pc
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Orange Zircon Gem - 0.9ct Octagon Step Cut (ID: 463297)

Octagon / Emerald Cut Orange Zircon

0.9ct
5.9 x 4 mm
$ 13.20
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1 pc
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Brownish Green Kornerupine Gem - 0.5ct Octagon Step Cut (ID: 497922)

Octagon / Emerald Cut Green Kornerupine

0.5ct
5.9 x 4 mm
$ 11.34
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1 pc
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Green to Pink Color-Change Diaspore Gem - 0.6ct Octagon Facet (ID: 422741)

Multicolor Color-Change Diaspore

0.6ct
6.1 x 3.9 mm
$ 18.30
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4 pcs
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Orange Spessartite Garnet Gem - 0.7ct Octagon Step Cut (ID: 295811)

Orange Spessartite Garnet

0.68 ct (total 2.73ctw)
5.9 x 4 mm
$ 57.33
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5 pcs
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Violet Blue Iolite Gem - 0.4ct Octagon Step Cut (ID: 279565)

Octagon / Emerald Cut Blue Iolite

0.41 ct (total 2.06ctw)
5.9 x 4 mm
$ 24.72
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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279642)

Octagon / Emerald Cut Blue Iolite

0.51 ct (total 3.04ctw)
6 x 4 mm
$ 36.48
Item in Stock
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Octagon Shape 6x4 mm Gems

GemSelect’s octagon (Emerald) shape 6x4mm gems are the ideal size for earrings, bracelets, and rings. Our calibrated gems are the perfect solution for new designs and repairs to existing pieces. The specifications of our stones ensure our stones to be within 0.24mm of the specified size making it easy to replace lost or damaged stones for cherished pieces. Our octagon-shaped gemstones are available in single units, pairs, lots, and multi-colored lots to assist you in selection.

A pair of earrings or a ring including GemSlect's 6x4mm octagon shaped gemstones can make an excellent anniversary gift for a cherished partner. We find the octagon or emerald cut to be ideal for a ring or earrings featured gem as it embodies the traditional design for a stone. The style of this gem gives the jewelry a classic feel that's always fashionable to wear. Our 6x4mm octagon stones arrange well when placed horizontally into a bracelet. Though they are seen most commonly in symmetrical arrangements, they can also appear in asymmetrical designs if set correctly.

6x4mm octagon-cut precious and semi-precious gemstones are available through GemSelect at wholesale prices. For additional information about each gemstone click the specific stone or stones of your choice. In this section, you will find detail including the weight of the gem, color, origin, treatment, cut, and all other applicable information.

Certified Customer Reviews
Overall Rating -> 10 star ratings
man their gems are pretty good, and the prices aren't to bad either, I like checking out hte gems on there website, beceause the pictures of the gems are taken pretty well, and you can see the table, and the facets.
Posted By Spinach in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I love gemselect and I have bought a fair amount from them. The only complaint I have is not being able to save gems. I have a lot of projects so i am in the market for a lot of different gems and it's so disappointing to have to delete them all just to purchase one or two that I have saved in my cart.
Posted By S.Hicks in March, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I always check this site because they have unique options.
Posted By Lisa in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Great website to navigate. Awesome Gem selection! Nice photos and discriptions for all of the gems for sale. You can find gems in all price ranges. Checkout was a breeze.
Posted By Timmy in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
They had an extensive gemstone selection in all different cuts, sizes, and colors. They also had very good and workable prices. All of these aspects pulled me in as a customer.
Posted By Josh in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
It all depend on the product I will receive and have it verified by my in law jewellers.
Posted By Vodka in February, 2019
Source: Bizrate
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart