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Buy Octagon Shape 7x5 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (200): Octagon Shape 7x5 mm Gems Clear All
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Blue Kyanite Gem - 1.2ct Octagon Step Cut (ID: 288390)

Octagon / Emerald Cut Blue Kyanite

1.18 ct (total 4.73ctw)
7.2 x 5 mm
$ 112.34
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.5ct Octagon Facet (ID: 393727)

Orange Hessonite Garnet

1.49 ct (total 2.98ctw)
6.9 x 5 mm
$ 41.72
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.2ct Octagon Facet (ID: 394107)

Orange Hessonite Garnet

1.18 ct (total 2.36ctw)
6.8 x 4.9 mm
$ 32.92
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4 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1ct Octagon Facet (ID: 394276)

Orange Hessonite Garnet

1.01 ct (total 4.04ctw)
6.8 x 4.9 mm
$ 56.36
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.4ct Octagon Facet (ID: 393738)

Orange Hessonite Garnet

1.41 ct (total 2.81ctw)
6.8 x 5 mm
$ 39.34
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3 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.1ct Octagon Facet (ID: 391932)

Orange Hessonite Garnet

1.09 ct (total 3.26ctw)
6.9 x 4.9 mm
$ 65.20
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.5ct Octagon Facet (ID: 394101)

Orange Hessonite Garnet

1.46 ct (total 2.92ctw)
6.8 x 5 mm
$ 40.73
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.3ct Octagon Facet (ID: 394873)

Orange Hessonite Garnet

1.32 ct (total 2.63ctw)
6.8 x 5 mm
$ 36.37
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4 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.1ct Octagon Facet (ID: 393671)

Orange Hessonite Garnet

1.09 ct (total 4.34ctw)
6.8 x 5 mm
$ 60.76
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2 pcs
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Orange Zircon Gem - 1.6ct Octagon Facet (ID: 429719)

Octagon / Emerald Cut Orange Zircon

1.63 ct (total 3.25ctw)
7.2 x 5.1 mm
$ 48.75
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6 pcs
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Yellow Golden Citrine Gem - 1.2ct Octagon Step Cut (ID: 275667)

Octagon / Emerald Cut Yellow Citrine

1.15 ct (total 6.92ctw)
7.1 x 5.1 mm
$ 36.33
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4 pcs
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Swiss Blue Topaz Gem - 1.2ct Octagon Step Cut (ID: 448307)

Octagon / Emerald Cut Blue Topaz

1.16 ct (total 4.62ctw)
7 x 5 mm
$ 30.17
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4 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.1ct Octagon Facet (ID: 393857)

Orange Hessonite Garnet

1.11 ct (total 4.42ctw)
6.9 x 4.9 mm
$ 61.88
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4 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.4ct Octagon Facet (ID: 398839)

Orange Hessonite Garnet

1.39 ct (total 5.56ctw)
6.9 x 5 mm
$ 111.20
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6 pcs
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Yellow Golden Citrine Gem - 1.2ct Octagon Step Cut (ID: 275664)

Octagon / Emerald Cut Yellow Citrine

1.15 ct (total 6.92ctw)
7.1 x 5.1 mm
$ 36.33
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1 pc
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Orange Zircon Gem - 1.6ct Octagon Step Cut (ID: 463449)

Octagon / Emerald Cut Orange Zircon

1.6ct
7.2 x 4.8 mm
$ 23.40
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.5ct Octagon Facet (ID: 394867)

Orange Hessonite Garnet

1.52 ct (total 3.04ctw)
7.1 x 5.2 mm
$ 42.04
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4 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.3ct Octagon Facet (ID: 392142)

Orange Hessonite Garnet

1.32 ct (total 5.27ctw)
6.8 x 5 mm
$ 105.40
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1 pc
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Orange Zircon Gem - 1.6ct Octagon Facet (ID: 429870)

Octagon / Emerald Cut Orange Zircon

1.6ct
7.1 x 5 mm
$ 23.70
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2 pcs
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Cinnamon Orange Hessonite Garnet Gem - 1.1ct Octagon Facet (ID: 394175)

Orange Hessonite Garnet

1.10 ct (total 2.19ctw)
6.8 x 4.9 mm
$ 30.55
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4 pcs
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Click for Product Video (288374)
Blue Kyanite Gem - 1.3ct Octagon Step Cut (ID: 288374)

Octagon / Emerald Cut Blue Kyanite

1.25 ct (total 4.98ctw)
7.1 x 5.1 mm
$ 118.28
Item in Stock
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Octagon Shape 7x5 mm Gems
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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Posted By BO in January, 2019
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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.
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Easy to find what i'm looking for on website, very clear, like photos
Posted By Lifter in January, 2019
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Better than what I expected. Beautifully cut gem!
Posted By in January, 2019
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Overall Rating -> 10 star ratings
Gem select is the most trustworthy web site for gems. What I see in the picture is exactly what I get. Size is indicated by carat weight, and not the picture size, as they are trying to give an up close view of the gem I am hoping to buy. It was so easy to find the stones I was looking for at a price I could afford.
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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