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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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6.31ct Natural Multicolor Rainbow Pyrite, Pear Shape, Opaque, Photo A

6.31ct Natural Multicolor Rainbow Pyrite, Pear Shape, Opaque

Rainbow Pyrite

6.31ct1 pc
$ 18.86
18.5 x 10.9 mm
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0.97ctw Natural Light Lively Green Peridot, Pear Shape, VVS-VS, Photo A

0.97ctw Natural Light Lively Green Peridot, Pear Shape, VVS-VS

Peridot

0.97ct total2 pcs
$ 8.51
6 x 4 mm (calibrated)
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5.91ct Natural Deep Green Emerald, Octagon / Emerald Cut, VS-SI, Photo A
Emerald Product Video (714589)

5.91ct Natural Deep Green Emerald, Octagon / Emerald Cut, VS-SI

Emerald

5.91ct1 pc
$ 13,734.84
11.3 x 10 mm
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1.61ct Natural Multicolor Opal, Marquise, Transparent, Photo A

1.61ct Natural Multicolor Opal, Marquise, Transparent

Opal

1.61ct1 pc
$ 70.56
15.2 x 6.9 mm
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0.61ctw Natural Orange-Gold Sapphire, Baguette, VS, Photo A

0.61ctw Natural Orange-Gold Sapphire, Baguette, VS

Sapphire

0.61ct total2 pcs
$ 36.22
5 x 2.5 mm
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3.19ctw Natural Deep Orange Zircon, Octagon / Emerald Cut, VS, Photo A

3.19ctw Natural Deep Orange Zircon, Octagon / Emerald Cut, VS

Zircon

3.19ct total3 pcs
$ 52.43
6.2 x 4.2 mm
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4.65ct Natural Medium-Dark Golden Citrine, Oval, VVS-VS, Photo A

4.65ct Natural Medium-Dark Golden Citrine, Oval, VVS-VS

Citrine

4.65ct1 pc
$ 35.67
14 x 9 mm (calibrated)
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1.69ct Natural Dark Purple Spinel, Cushion, VVS-VS, Photo A

1.69ct Natural Dark Purple Spinel, Cushion, VVS-VS

Spinel

1.69ct1 pc
$ 115.54
6.9 x 6.4 mm
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3.84ctw Natural Golden Orange Citrine, Oval, VVS-VS, Photo A

3.84ctw Natural Golden Orange Citrine, Oval, VVS-VS

Citrine

3.84ct total2 pcs
$ 21.03
9 x 7 mm (calibrated)
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0.67ct Natural Bright Orange Fire Opal, Oval, Transparent, Photo A
Fire Opal Product Video (585387)

0.67ct Natural Bright Orange Fire Opal, Oval, Transparent

Fire Opal

0.67ct1 pc
$ 19.08
8 x 6 mm (calibrated)
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6.60ct Natural Medium Gold Citrine, Octagon / Emerald Cut, VVS, Photo A

6.60ct Natural Medium Gold Citrine, Octagon / Emerald Cut, VVS

Citrine

6.60ct1 pc
$ 42.44
14 x 10 mm (calibrated)
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23.09ctw Natural Multicolor Jasper, Fancy, Opaque, Photo A

23.09ctw Natural Multicolor Jasper, Fancy, Opaque

Jasper

23.09ct total2 pcs
$ 13.91
25.1 x 14.8 mm
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11.12ct Natural Black with Blue Sparkle Nuummite, Oval, Opaque, Photo A

11.12ct Natural Black with Blue Sparkle Nuummite, Oval, Opaque

Nuummite

11.12ct1 pc
$ 45.63
17.4 x 11.7 mm
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5.79ctw Natural Medium-Light Orange Sunstone, Round, Translucent, Photo A

5.79ctw Natural Medium-Light Orange Sunstone, Round, Translucent

Sunstone

5.79ct total2 pcs
$ 34.26
9 mm (calibrated)
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1.47ct Natural Bright Gold Citrine, Oval, VVS, Photo A

1.47ct Natural Bright Gold Citrine, Oval, VVS

Citrine

1.47ct1 pc
$ 10.25
9 x 7 mm (calibrated)
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0.93ct Natural Deep Pink Malaya Garnet, Round, VS, Photo A

0.93ct Natural Deep Pink Malaya Garnet, Round, VS

Malaya Garnet

0.93ct1 pc
$ 43.31
5.7 mm
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4.26ct Natural Golden Orange Citrine, Oval, VVS-VS, Photo A

4.26ct Natural Golden Orange Citrine, Oval, VVS-VS

Citrine

4.26ct1 pc
$ 32.67
12 x 10 mm (calibrated)
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1.05ctw Natural Orange Brown Citrine, Marquise, VS, Photo A

1.05ctw Natural Orange Brown Citrine, Marquise, VS

Citrine

1.05ct total2 pcs
$ 5.76
8.1 x 4.1 mm
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0.99ct Natural Gold Beryl, Oval, VVS, Photo A

0.99ct Natural Gold Beryl, Oval, VVS

Beryl

0.99ct1 pc
$ 24.65
8 x 6 mm (calibrated)
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1.43ct Natural Multicolor Opal, Oval, Translucent, Photo A

1.43ct Natural Multicolor Opal, Oval, Translucent

Opal

1.43ct1 pc
$ 47.00
9 x 7 mm (calibrated)
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5.38ctw Natural Light Peach Orange Sunstone, Oval, Transparent, Photo A

5.38ctw Natural Light Peach Orange Sunstone, Oval, Transparent

Sunstone

5.38ct total2 pcs
$ 41.27
10 x 8 mm (calibrated)
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2.12ctw Natural Sangria Red Pyrope Garnet, Marquise, VVS-VS, Photo A

2.12ctw Natural Sangria Red Pyrope Garnet, Marquise, VVS-VS

Pyrope Garnet

2.12ct total2 pcs
$ 18.58
10 x 5 mm
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0.34ct Natural Medium Orange Sapphire, Heart, VS, Photo A

0.34ct Natural Medium Orange Sapphire, Heart, VS

Sapphire

0.34ct1 pc
$ 21.00
4.5 x 4.5 mm
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3.77ct Natural Medium Violet Amethyst, Pear Shape, VVS, Photo A

3.77ct Natural Medium Violet Amethyst, Pear Shape, VVS

Amethyst

3.77ct1 pc
$ 30.16
14 x 9 mm (calibrated)
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0.41ct Natural Bright Crimson Red-Orange Sapphire, Pear Shape, VVS-VS, Photo A

0.41ct Natural Bright Crimson Red-Orange Sapphire, Pear Shape, VVS-VS

Sapphire

0.41ct1 pc
$ 61.25
5.2 x 4 mm
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1.44ctw Natural Multicolor Mystic Quartz, Trillion, VVS, Photo A

1.44ctw Natural Multicolor Mystic Quartz, Trillion, VVS

Mystic Quartz

1.44ct total2 pcs
$ 10.04
6 x 6 mm (calibrated)
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0.61ct Natural Lively Green Peridot, Marquise, VVS-VS, Photo A

0.61ct Natural Lively Green Peridot, Marquise, VVS-VS

Peridot

0.61ct1 pc
$ 9.11
8 x 4 mm (calibrated)
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2.63ctw Natural Violet Blue Tanzanite, Oval, VS, Photo A
Tanzanite Product Video (446476)

2.63ctw Natural Violet Blue Tanzanite, Oval, VS

Tanzanite

2.63ct total5 pcs
$ 216.12
6 x 4 mm (calibrated)
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17.50ct Natural Raspberry Red Ruby-Zoisite, Flower Cut, Opaque, Photo A

17.50ct Natural Raspberry Red Ruby-Zoisite, Flower Cut, Opaque

Ruby-Zoisite

17.50ct1 pc
$ 21.26
16 x 16 mm (calibrated)
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12.02ctw Natural Multicolor Jasper, Pear Shape, Opaque, Photo A

12.02ctw Natural Multicolor Jasper, Pear Shape, Opaque

Jasper

12.02ct total2 pcs
$ 6.82
19.8 x 11.8 mm
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4.28ctw Natural Medium-Dark Golden Citrine, Oval, VVS-VS, Photo A

4.28ctw Natural Medium-Dark Golden Citrine, Oval, VVS-VS

Citrine

4.28ct total2 pcs
$ 23.45
10 x 8 mm (calibrated)
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8.68ct Natural Light Yellow Quartz, Oval, Transparent, Photo A

8.68ct Natural Light Yellow Quartz, Oval, Transparent

Quartz

8.68ct1 pc
$ 8.65
13.6 x 11.2 mm
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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 -> 9 star ratings

It was great!

Posted By Annie in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Everything was good, the purchase was what I expected and what they show is what you get.

Posted By Mr. in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I always purchase my stones from GemSelect, their products are high quality and customer service is always great. I also like the fact that I am able to purchase unique items

Posted By Desperaux in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect offers excellent choices, prices & service- highly recommended! Unfortunately, prior to ordering a replacement gemstone, my jeweler neglected to mention it needed to be one that was a'cushion cuta' to fit the existing mount. Have yet to return/exchangea'

Posted By CJ in March, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

Fast snd easy to find what I was looking for

Posted By Bawb in May, 2026
Source: Bizrate
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