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Home › Calibrated Gemstones › Octagon Shape 14x12 mm Gems

Calibrated 14 x 12 mm Octagon Shape Gemstones from GemSelect

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34.30ctw Natural Multicolor Fossil Coral, Oval, Opaque, Photo A

34.30ctw Natural Multicolor Fossil Coral, Oval, Opaque

Fossil Coral

34.30ct total2 pcs
$ 37.58
21.6 x 14.1 mm
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4.60ct Natural Light Green Jade, Oval, Opaque, Photo A

4.60ct Natural Light Green Jade, Oval, Opaque

Jade

4.60ct1 pc
$ 9.16
12 x 10 mm (calibrated)
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0.62ct Natural Medium Orange Sapphire, Oval, VS, Photo A

0.62ct Natural Medium Orange Sapphire, Oval, VS

Sapphire

0.62ct1 pc
$ 65.55
6 x 4 mm (calibrated)
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3.02ct Natural Dark Golden Citrine, Oval, VS, Photo A

3.02ct Natural Dark Golden Citrine, Oval, VS

Citrine

3.02ct1 pc
$ 19.85
11 x 9 mm (calibrated)
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2.34ct Natural Multicolor Labradorite, Marquise, Translucent, Photo A

2.34ct Natural Multicolor Labradorite, Marquise, Translucent

Labradorite

2.34ct1 pc
$ 5.17
12 x 6 mm (calibrated)
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0.99ct Natural Pale Yellow Color-Change Diaspore, Marquise, VS, Photo A

0.99ct Natural Pale Yellow Color-Change Diaspore, Marquise, VS

Color-Change Diaspore

0.99ct1 pc
$ 52.75
10.2 x 4.1 mm
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1.88ctw Natural Intense Violet Blue Tanzanite, Pear Shape, VS, Photo A

1.88ctw Natural Intense Violet Blue Tanzanite, Pear Shape, VS

Tanzanite

1.88ct total10 pcs
$ 72.09
5.2 x 3.1 mm
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8.90ct Natural Multicolor Coral, Oval, Opaque, Photo A

8.90ct Natural Multicolor Coral, Oval, Opaque

Coral

8.90ct1 pc
$ 27.80
19 x 13.8 mm
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7.09ct Natural Bi-color Ametrine, Octagon / Emerald Cut, VVS-VS, Photo A
Ametrine Product Video (670188)

7.09ct Natural Bi-color Ametrine, Octagon / Emerald Cut, VVS-VS

Ametrine

7.09ct1 pc
$ 101.63
14 x 10 mm (calibrated)
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1.10ct Natural Deep Orange Hessonite Garnet, Round, VS, Photo A

1.10ct Natural Deep Orange Hessonite Garnet, Round, VS

Hessonite Garnet

1.10ct1 pc
$ 16.80
6 mm (calibrated)
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9.44ctw Natural Multicolor Pietersite, Fancy, Opaque, Photo A

9.44ctw Natural Multicolor Pietersite, Fancy, Opaque

Pietersite

9.44ct total2 pcs
$ 22.09
20.3 x 9.8 mm
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1.20ctw Natural Amber Orange Sapphire, Oval, VVS-VS, Photo A
Sapphire Product Video (702382)

1.20ctw Natural Amber Orange Sapphire, Oval, VVS-VS

Sapphire

1.20ct total2 pcs
$ 179.28
6 x 4 mm (calibrated)
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0.62ct Natural Navy Blue Sapphire, Round, VS, Photo A

0.62ct Natural Navy Blue Sapphire, Round, VS

Sapphire

0.62ct1 pc
$ 369.07
5 mm (calibrated)
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19.86ct Natural Light Blue Green Amazonite, Cushion, Opaque, Photo A

19.86ct Natural Light Blue Green Amazonite, Cushion, Opaque

Amazonite

19.86ct1 pc
$ 20.18
24.6 x 16 mm
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0.67ct Natural Intense Pink Sapphire, Oval, VVS-VS, Photo A

0.67ct Natural Intense Pink Sapphire, Oval, VVS-VS

Sapphire

0.67ct1 pc
$ 220.22
6.1 x 4.3 mm
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0.61ct Natural Light Green Sapphire, Heart, VS, Photo A

0.61ct Natural Light Green Sapphire, Heart, VS

Sapphire

0.61ct1 pc
$ 33.37
4 x 4 mm (calibrated)
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3.97ctw Natural Medium Orange Moonstone, Trillion, Translucent, Photo A

3.97ctw Natural Medium Orange Moonstone, Trillion, Translucent

Moonstone

3.97ct total2 pcs
$ 7.91
8 x 8 mm (calibrated)
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1.06ctw Natural Golden Citrine, Oval, VS, Photo A

1.06ctw Natural Golden Citrine, Oval, VS

Citrine

1.06ct total2 pcs
$ 7.39
6 x 4 mm (calibrated)
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1.10ct Natural Medium Gold Citrine, Round, VVS, Photo A

1.10ct Natural Medium Gold Citrine, Round, VVS

Citrine

1.10ct1 pc
$ 8.76
7 mm (calibrated)
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24.42ctw Natural Multicolor Jasper, Cushion, Opaque, Photo A

24.42ctw Natural Multicolor Jasper, Cushion, Opaque

Jasper

24.42ct total2 pcs
$ 14.35
21.1 x 14.7 mm
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6.38ct Natural Lemon Yellow Quartz, Flower Cut, Transparent, Photo A

6.38ct Natural Lemon Yellow Quartz, Flower Cut, Transparent

Quartz

6.38ct1 pc
$ 28.03
14.2 x 9.9 mm
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4.72ctw Natural Sky Blue Topaz, Marquise, VVS-VS, Photo A

4.72ctw Natural Sky Blue Topaz, Marquise, VVS-VS

Topaz

4.72ct total2 pcs
$ 25.85
12 x 6.1 mm
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36.92ct Natural Multicolor Jasper, Fancy, Opaque, Photo A

36.92ct Natural Multicolor Jasper, Fancy, Opaque

Jasper

36.92ct1 pc
$ 11.04
36.9 x 11.8 mm
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9.79ct Natural Light Tortilla Brown Star Moonstone, Oval, Translucent, Photo A

9.79ct Natural Light Tortilla Brown Star Moonstone, Oval, Translucent

Star Moonstone

9.79ct1 pc
$ 42.91
12.7 x 10.3 mm
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2.30ctw Natural White Zircon, Oval, VS, Photo A

2.30ctw Natural White Zircon, Oval, VS

Zircon

2.30ct total2 pcs
$ 13.66
7 x 5 mm (calibrated)
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5.25ct Natural Deep Golden Orange Citrine, Oval, VVS-VS, Photo A

5.25ct Natural Deep Golden Orange Citrine, Oval, VVS-VS

Citrine

5.25ct1 pc
$ 40.27
13.4 x 10.5 mm
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7.87ct Natural Bluish White Rainbow Moonstone, Baguette, Transparent, Photo A

7.87ct Natural Bluish White Rainbow Moonstone, Baguette, Transparent

Rainbow Moonstone

7.87ct1 pc
$ 62.71
16.5 x 7.1 mm
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13.53ct Natural Iris Violet Amethyst, Round, VVS, Photo A

13.53ct Natural Iris Violet Amethyst, Round, VVS

Amethyst

13.53ct1 pc
$ 94.33
16 mm (calibrated)
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5.27ctw Natural Medium-Dark Orange Hessonite Garnet, Octagon / Emerald Cut, VS-SI, Photo A
Hessonite Garnet Product Video (392142)

5.27ctw Natural Medium-Dark Orange Hessonite Garnet, Octagon / Emerald Cut, VS-SI

Hessonite Garnet

5.27ct total4 pcs
$ 115.48
7 x 5 mm (calibrated)
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60.40ct Natural Multicolor Agate, Fancy, Opaque, Photo A

60.40ct Natural Multicolor Agate, Fancy, Opaque

Agate

60.40ct1 pc
$ 105.78
25.3 x 15.3 mm
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5.21ctw Natural Sky Blue Topaz, Briolette, VVS-VS, Photo A

5.21ctw Natural Sky Blue Topaz, Briolette, VVS-VS

Topaz

5.21ct total2 pcs
$ 28.54
8.2 x 6.4 mm
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1.20ct Natural Golden Orange Beryl, Oval, VVS, Photo A

1.20ct Natural Golden Orange Beryl, Oval, VVS

Beryl

1.20ct1 pc
$ 29.88
8 x 6 mm (calibrated)
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Why Buy Octagon Shape 14x12 Mm Gems from GemSelect?

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 liked the selection of gems, and price. I did not like your PayPal process. I already have a PP account and you want me to sign up for another.

Posted By CLTCJH in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good place to buy gemstones

Posted By Elansary in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Very good and simple exchange

Posted By Waylon in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

If you have motion picture, then I will be more satisfied with.

Posted By Ray in November, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

It was a good interaction I got a good gemstone for cheap

Posted By Jon in December, 2025
Source: Bizrate
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