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Buy Octagon Shape 14x12 mm Gems

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20.26ct Natural Multicolor Jasper, Fancy, Opaque, Photo A

20.26ct Natural Multicolor Jasper, Fancy, Opaque

Jasper

20.26ct1 pc
$ 13.37
33.2 x 8.5 mm
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0.70ct Natural Light Yellow Color-Change Diaspore, Pear Shape, VVS-VS, Photo A

0.70ct Natural Light Yellow Color-Change Diaspore, Pear Shape, VVS-VS

Color-Change Diaspore

0.70ct1 pc
$ 44.52
8.6 x 4.2 mm
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1.93ct Natural Light Brown Tiger's Eye, Pear Shape, Opaque, Photo A

1.93ct Natural Light Brown Tiger's Eye, Pear Shape, Opaque

Tiger's Eye

1.93ct1 pc
$ 3.01
8 x 8 mm (calibrated)
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2.10ct Natural Medium Purple Kunzite, Octagon / Emerald Cut, VS, Photo A

2.10ct Natural Medium Purple Kunzite, Octagon / Emerald Cut, VS

Kunzite

2.10ct1 pc
$ 69.62
6.5 x 6.3 mm
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80.35ct Natural Multicolor Rhodochrosite, Fancy, Translucent, Photo A

80.35ct Natural Multicolor Rhodochrosite, Fancy, Translucent

Rhodochrosite

80.35ct1 pc
$ 88.56
37.7 x 23.9 mm
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44.18ct Natural Dark Green Idocrase, Oval, Opaque, Photo A

44.18ct Natural Dark Green Idocrase, Oval, Opaque

Idocrase

44.18ct1 pc
$ 22.09
32.7 x 25.4 mm
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0.54ct Natural Teal Sapphire, Trillion, VVS-VS, Photo A

0.54ct Natural Teal Sapphire, Trillion, VVS-VS

Sapphire

0.54ct1 pc
$ 77.76
5 x 5 mm (calibrated)
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4.83ct Natural Clear White Topaz, Round, VVS-VS, Photo A

4.83ct Natural Clear White Topaz, Round, VVS-VS

Topaz

4.83ct1 pc
$ 22.40
10 mm (calibrated)
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1.17ct Natural Deep Purple Spinel, Pear Shape, VS-SI, Photo A

1.17ct Natural Deep Purple Spinel, Pear Shape, VS-SI

Spinel

1.17ct1 pc
$ 162.17
7.5 x 5.9 mm
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0.61ct Natural London Blue Topaz, Oval, VVS, Photo A

0.61ct Natural London Blue Topaz, Oval, VVS

Topaz

0.61ct1 pc
$ 5.86
6 x 4 mm (calibrated)
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0.91ct Natural Bright Gold Citrine, Marquise, VS, Photo A

0.91ct Natural Bright Gold Citrine, Marquise, VS

Citrine

0.91ct1 pc
$ 8.74
8.9 x 5.1 mm
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0.43ct Natural Bright Forest Green Chrome Diopside, Oval, VS, Photo A

0.43ct Natural Bright Forest Green Chrome Diopside, Oval, VS

Chrome Diopside

0.43ct1 pc
$ 12.90
6 x 4 mm (calibrated)
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0.30ct Natural Deep Crimson Ruby, Round, SI-I1, Photo A

0.30ct Natural Deep Crimson Ruby, Round, SI-I1

Ruby

0.30ct1 pc
$ 119.20
4 mm (calibrated)
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1.48ctw Natural Deep Red Pyrope Garnet, Pear Shape, VS, Photo A

1.48ctw Natural Deep Red Pyrope Garnet, Pear Shape, VS

Pyrope Garnet

1.48ct total2 pcs
$ 14.21
7 x 5 mm (calibrated)
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4.70ct Natural Multicolor Ruby in Fuchsite, Marquise, Translucent, Photo A

4.70ct Natural Multicolor Ruby in Fuchsite, Marquise, Translucent

Ruby in Fuchsite

4.70ct1 pc
$ 41.82
17.9 x 10.1 mm
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0.67ct Natural Very Light Yellow Color-Change Diaspore, Cushion, VS, Photo A

0.67ct Natural Very Light Yellow Color-Change Diaspore, Cushion, VS

Color-Change Diaspore

0.67ct1 pc
$ 28.30
5.8 x 4.5 mm
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0.77ct Natural Multicolor Sapphire, Cushion, VS, Photo A

0.77ct Natural Multicolor Sapphire, Cushion, VS

Sapphire

0.77ct1 pc
$ 73.92
6 x 4.4 mm
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0.89ct Natural Seaweed Green Tourmaline, Octagon / Emerald Cut, VS, Photo A

0.89ct Natural Seaweed Green Tourmaline, Octagon / Emerald Cut, VS

Tourmaline

0.89ct1 pc
$ 28.20
11.9 x 3 mm
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0.62ct Natural Autumn Yellow Sphalerite, Round, VS-SI, Photo A

0.62ct Natural Autumn Yellow Sphalerite, Round, VS-SI

Sphalerite

0.62ct1 pc
$ 31.00
5 mm (calibrated)
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4.78ctw Natural Clear White Topaz, Square, VVS-VS, Photo A

4.78ctw Natural Clear White Topaz, Square, VVS-VS

Topaz

4.78ct total10 pcs
$ 46.37
4.2 x 4.2 mm
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5.12ct Natural Light Green Jade, Oval, Opaque, Photo A

5.12ct Natural Light Green Jade, Oval, Opaque

Jade

5.12ct1 pc
$ 12.29
12 x 10 mm (calibrated)
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1.72ct Natural Yellowish Green Sphene, Oval, Transparent, Photo A

1.72ct Natural Yellowish Green Sphene, Oval, Transparent

Sphene

1.72ct1 pc
$ 10.32
7.1 x 6.4 mm
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2.40ct Natural Light Peachy Golden Andesine Labradorite, Pear Shape, Transparent, Photo A
Andesine Labradorite Product Video (375926)

2.40ct Natural Light Peachy Golden Andesine Labradorite, Pear Shape, Transparent

Andesine Labradorite

2.40ct1 pc
$ 63.36
10.8 x 7.8 mm
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0.34ct Natural Multicolor Opal, Oval, Opaque, Photo A

0.34ct Natural Multicolor Opal, Oval, Opaque

Opal

0.34ct1 pc
$ 12.24
7 x 5 mm (calibrated)
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0.54ct Natural Orange-Gold Spessartite Garnet, Oval, VS, Photo A

0.54ct Natural Orange-Gold Spessartite Garnet, Oval, VS

Spessartite Garnet

0.54ct1 pc
$ 22.68
5 x 4 mm (calibrated)
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4.13ctw Natural Medium Red Pyrope Garnet, Square, VS, Photo A

4.13ctw Natural Medium Red Pyrope Garnet, Square, VS

Pyrope Garnet

4.13ct total10 pcs
$ 38.16
4 x 4 mm (calibrated)
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1.48ctw Natural Intense Blue Tanzanite, Pear Shape, VS, Photo A

1.48ctw Natural Intense Blue Tanzanite, Pear Shape, VS

Tanzanite

1.48ct total5 pcs
$ 85.45
5.8 x 3.7 mm
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1.34ct Natural Sky Blue Topaz, Marquise, VVS-VS, Photo A

1.34ct Natural Sky Blue Topaz, Marquise, VVS-VS

Topaz

1.34ct1 pc
$ 12.38
10.3 x 5.1 mm
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46.61ct Natural Bumblebee Yellow Quartz, Oval, Transparent, Photo A

46.61ct Natural Bumblebee Yellow Quartz, Oval, Transparent

Quartz

46.61ct1 pc
$ 73.82
28.8 x 20.9 mm
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0.82ct Natural Medium Red Ruby, Octagon / Emerald Cut, VS, Photo A

0.82ct Natural Medium Red Ruby, Octagon / Emerald Cut, VS

Ruby

0.82ct1 pc
$ 88.56
6 x 3.8 mm
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15.28ctw Natural Black Spinel, Round, Opaque, Photo A

15.28ctw Natural Black Spinel, Round, Opaque

Spinel

15.28ct total2 pcs
$ 60.50
12 mm (calibrated)
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0.98ct Natural Medium Light Brown Color-Change Garnet, Cushion, VS, Photo A

0.98ct Natural Medium Light Brown Color-Change Garnet, Cushion, VS

Color-Change Garnet

0.98ct1 pc
$ 94.33
6.3 x 4.8 mm
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GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I enjoy doing buisness with GemSelect. It is always a pleasure and you get what you ordered!

Posted By Ballpark in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was very good and concise.

Posted By Whydothey in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Helpselect accomplished all personal growth goals

Posted By Mike in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I always enjoy the selection and the unique cuts I can find here. I would love to see more hex cuts tho! Maybe some rose cuts too!

Posted By Blkfower83 in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I've made several purchases through GemSelect in the past, although not within the last six months. Their gems are always beautiful and I have never had an issue with their prices or their stones. Even when I'm not buying, I love scrolling through their website, which is very user friendly. I especially appreciate being able to change the listing order to your own liking, such as most to least expensive, largest to smallest, etc. As with most online orders, however, I think the shipping charges are not commensurate with the actual weight of the items shipped.

Posted By DrLHS in November, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

The checkout said the my ccv was invalid. i had to use another card.

Posted By Ron in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
Source: Bizrate

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 14 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.

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Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I enjoy doing buisness with GemSelect. It is always a pleasure and you get what you ordered!

Posted By Ballpark in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Love, and have always loved, your website.

Posted By Aberabic in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was very good and concise.

Posted By Whydothey in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Helpselect accomplished all personal growth goals

Posted By Mike in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I always enjoy the selection and the unique cuts I can find here. I would love to see more hex cuts tho! Maybe some rose cuts too!

Posted By Blkfower83 in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I've made several purchases through GemSelect in the past, although not within the last six months. Their gems are always beautiful and I have never had an issue with their prices or their stones. Even when I'm not buying, I love scrolling through their website, which is very user friendly. I especially appreciate being able to change the listing order to your own liking, such as most to least expensive, largest to smallest, etc. As with most online orders, however, I think the shipping charges are not commensurate with the actual weight of the items shipped.

Posted By DrLHS in November, 2024
Source: Bizrate

Overall Rating -> 9 star ratings

The checkout said the my ccv was invalid. i had to use another card.

Posted By Ron in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very professional site

Posted By JR in January, 2025
Source: Bizrate
Enlarged Gemstone Image