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Buy Octagon Shape 16x12 mm Gems

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Gemtype Color Shape Weight Size Clarity Price Origin
You Selected (31): Octagon Shape 16x12 mm Gems Clear All
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Black Gray Hematite Gem - 9.5ct Octagon Cabochon (ID: 515488)

Octagon / Emerald Cut Gray Hematite

9.5ct
16.2 x 12.5 mm
$ 9.47
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Pink Mystic Topaz Gem - 14.7ct Octagon Step Cut (ID: 484916)

Octagon / Emerald Cut Pink Mystic Topaz

14.7ct
16 x 12.1 mm
$ 132.12
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Purplish Pink Mystic Topaz Gem - 14.6ct Octagon Step Cut (ID: 484927)

Octagon / Emerald Cut Pink Mystic Topaz

14.6ct
15.5 x 11.9 mm
$ 131.49
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Purplish Pink Mystic Topaz Gem - 13.4ct Octagon Step Cut (ID: 484922)

Octagon / Emerald Cut Pink Mystic Topaz

13.4ct
15.5 x 12 mm
$ 120.96
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Spotted Green Bloodstone Gem - 21.6ct Octagon Cabochon (ID: 478586)

Octagon / Emerald Cut Green Bloodstone

21.6ct
16 x 12.2 mm
$ 43.12
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Yellow Golden Citrine Gem - 11.8ct Octagon Step Cut (ID: 503449)

Octagon / Emerald Cut Yellow Citrine

11.8ct
16.1 x 12.1 mm
$ 70.09
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Yellow Golden Citrine Gem - 12.3ct Octagon Step Cut (ID: 503451)

Octagon / Emerald Cut Yellow Citrine

12.3ct
16.1 x 12.1 mm
$ 72.58
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Yellow Golden Citrine Gem - 11.1ct Octagon Step Cut (ID: 500718)

Octagon / Emerald Cut Yellow Citrine

11.1ct
16.1 x 12.1 mm
$ 64.92
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Yellow Golden Citrine Gem - 11.4ct Octagon Step Cut (ID: 500724)

Octagon / Emerald Cut Yellow Citrine

11.4ct
16.1 x 12 mm
$ 67.09
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Yellow Golden Citrine Gem - 11.5ct Octagon Step Cut (ID: 503628)

Octagon / Emerald Cut Yellow Citrine

11.5ct
16 x 12 mm
$ 67.84
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Yellow Golden Citrine Gem - 11.4ct Octagon Step Cut (ID: 500813)

Octagon / Emerald Cut Yellow Citrine

11.4ct
16.2 x 12 mm
$ 66.80
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Yellow Golden Citrine Gem - 12.1ct Octagon Step Cut (ID: 500704)

Octagon / Emerald Cut Yellow Citrine

12.1ct
16.2 x 12.2 mm
$ 70.85
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Yellow Golden Citrine Gem - 12ct Octagon Step Cut (ID: 500723)

Octagon / Emerald Cut Yellow Citrine

12ct
16.1 x 12 mm
$ 70.50
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Yellow Golden Citrine Gem - 9.9ct Octagon Step Cut (ID: 500713)

Octagon / Emerald Cut Yellow Citrine

9.9ct
16.1 x 12 mm
$ 58.17
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Yellow Golden Citrine Gem - 12.6ct Octagon Step Cut (ID: 503454)

Octagon / Emerald Cut Yellow Citrine

12.6ct
16 x 12.1 mm
$ 74.83
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Yellow Golden Citrine Gem - 9.9ct Octagon Step Cut (ID: 500709)

Octagon / Emerald Cut Yellow Citrine

9.9ct
15.9 x 12 mm
$ 58.17
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Yellow Golden Citrine Gem - 11.1ct Octagon Step Cut (ID: 500812)

Octagon / Emerald Cut Yellow Citrine

11.1ct
16 x 12.1 mm
$ 65.39
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Yellow Golden Citrine Gem - 10.9ct Octagon Step Cut (ID: 500815)

Octagon / Emerald Cut Yellow Citrine

10.9ct
16.1 x 12 mm
$ 63.69
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Yellow Golden Citrine Gem - 11ct Octagon Step Cut (ID: 500708)

Octagon / Emerald Cut Yellow Citrine

11ct
16 x 12 mm
$ 64.80
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Yellow Golden Citrine Gem - 12ct Octagon Step Cut (ID: 500706)

Octagon / Emerald Cut Yellow Citrine

12ct
16.1 x 12 mm
$ 70.50
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Yellow Golden Citrine Gem - 12.2ct Octagon Step Cut (ID: 500717)

Octagon / Emerald Cut Yellow Citrine

12.2ct
16.1 x 12 mm
$ 71.67
Item in Stock
1 2
Octagon Shape 16x12 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 16 x 12 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.

Certified Customer Reviews
Overall Rating -> 8 star ratings
i haven't received my purchase yet so i don't have a full opinion.
Posted By Tjk in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I would recommend GEMSELECT based upon the variety of gems. Gems that i didn't expect to even be apart of the selection and it gave me more options. Options in which played a key role in finding the right gem. Its always good to have options especially when trying to formulate a good piece of art work that has uniqueness. Which ultimately captures costumers eye appeal.
Posted By Left.Right.Center in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
I found a beautiful rose quartz stone in the right size for the right price.
Posted By Calico9999 in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Gemselect is o.k the prices are pretty good, but the shipping prices really suck, one time I order from them and order got lost or never came, but they were good about fixing the problem and rectifying the situation, the stones and good, and the ones that come in the mail, look just as pictured on the website, or all it's not bad and its were I go to get my stones.
Posted By Spinach in February, 2019
Source: Bizrate
Overall Rating -> 10 star ratings
Perfect experience. Pictures were accurate, selection was easy to maneuver. Product arrived as ordered.
Posted By Jess in February, 2019
Source: Bizrate
Overall Rating -> 9 star ratings
Easy to shop through gemselect and will look there for future purchases.
Posted By Childcapo 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