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Buy Octagon Shape 6x4 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (160): 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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6 pcs
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Violet Blue Iolite Gem - 0.5ct Octagon Step Cut (ID: 279571)

Octagon / Emerald Cut Blue Iolite

0.45 ct (total 2.68ctw)
5.9 x 3.9 mm
$ 32.16
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4 pcs
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Multicolor Sapphire Gem - 0.6ct Octagon Facet (ID: 444393)

Octagon / Emerald Cut Multicolor Sapphire

0.59 ct (total 2.37ctw)
6 x 4 mm
$ 285.73
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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
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 -> 9 star ratings
Great selection. Love the many learning features like articles and gem information. Prices competitive for natural stones. I do miss not having a selection of lab-made stones, CZ’s, etc, which are useful when price and cost are factors.
Posted By Dirk in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Website easy to navigate.
Posted By RaeRae in January, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
I WOULD RECOMMEND GEM SELECT.
Posted By BO in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
As Always never disappointed in any gemstone I purchase from this site. I have never had a problem. Thank-You Gemselect for offering such a comprehensive variety . I will continue to order from this site.
Posted By Brian in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Easy to find what i'm looking for on website, very clear, like photos
Posted By Lifter in January, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Better than what I expected. Beautifully cut gem!
Posted By in January, 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