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Buy Octagon Shape 14x12 mm Gems

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3.10ctw Natural Black Onyx, Round, Opaque, Photo A

3.10ctw Natural Black Onyx, Round, Opaque

Onyx

3.10ct total2 pcs
$ 7.44
7 mm (calibrated)
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7.22ctw Natural Earthy Pink Strawberry Quartz, Round, Translucent, Photo A

7.22ctw Natural Earthy Pink Strawberry Quartz, Round, Translucent

Strawberry Quartz

7.22ct total2 pcs
$ 133.43
10 mm (calibrated)
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0.57ct Natural Multicolor Opal, Oval, Opaque, Photo A

0.57ct Natural Multicolor Opal, Oval, Opaque

Opal

0.57ct1 pc
$ 20.52
6.6 x 4.9 mm
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0.50ct Natural White Zircon, Oval, VVS-VS, Photo A

0.50ct Natural White Zircon, Oval, VVS-VS

Zircon

0.50ct1 pc
$ 29.40
5 x 3 mm (calibrated)
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0.89ct Natural Warm White Sillimanite Cat's Eye, Oval, Transparent, Photo A

0.89ct Natural Warm White Sillimanite Cat's Eye, Oval, Transparent

Sillimanite Cat's Eye

0.89ct1 pc
$ 4.27
6.4 x 4.1 mm
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2.86ctw Natural Deep Orange Hessonite Garnet, Octagon / Emerald Cut, VS, Photo A

2.86ctw Natural Deep Orange Hessonite Garnet, Octagon / Emerald Cut, VS

Hessonite Garnet

2.86ct total2 pcs
$ 67.96
6 x 6 mm (calibrated)
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1.88ct Natural Warm White Zircon, Round, VVS, Photo A

1.88ct Natural Warm White Zircon, Round, VVS

Zircon

1.88ct1 pc
$ 61.85
7 mm (calibrated)
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25.82ct Natural Orangeish Brown Rutile Quartz, Marquise, Transparent, Photo A
Rutile Quartz Product Video (402579)

25.82ct Natural Orangeish Brown Rutile Quartz, Marquise, Transparent

Rutile Quartz

25.82ct1 pc
$ 109.40
31.1 x 13.8 mm
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8.76ct Natural Purplish Violet Amethyst, Cushion, VVS, Photo A

8.76ct Natural Purplish Violet Amethyst, Cushion, VVS

Amethyst

8.76ct1 pc
$ 73.58
12.5 x 14.1 mm
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0.60ct Natural Gold Sapphire, Oval, VVS-VS, Photo A

0.60ct Natural Gold Sapphire, Oval, VVS-VS

Sapphire

0.60ct1 pc
$ 40.98
6 x 4 mm (calibrated)
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1.67ctw Natural Light Forest Green Sapphire, Trillion, VS, Photo A

1.67ctw Natural Light Forest Green Sapphire, Trillion, VS

Sapphire

1.67ct total5 pcs
$ 65.47
4.4 x 4.3 mm
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2.87ct Natural Multicolor Labradorite, Round, Translucent, Photo A

2.87ct Natural Multicolor Labradorite, Round, Translucent

Labradorite

2.87ct1 pc
$ 7.44
9 mm (calibrated)
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8.67ct Natural Schorl Tourmaline, Oval, Opaque, Photo A

8.67ct Natural Schorl Tourmaline, Oval, Opaque

Tourmaline

8.67ct1 pc
$ 43.35
13 x 11 mm (calibrated)
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7.73ctw Natural White Zircon, Oval, VVS-VS, Photo A

7.73ctw Natural White Zircon, Oval, VVS-VS

Zircon

7.73ct total10 pcs
$ 55.92
6 x 4 mm (calibrated)
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12.99ct Natural Light Green Prehnite, Flower Cut, Translucent, Photo A

12.99ct Natural Light Green Prehnite, Flower Cut, Translucent

Prehnite

12.99ct1 pc
$ 36.01
16 x 12 mm (calibrated)
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1.49ct Natural Orange-Gold Citrine, Octagon / Emerald Cut, VVS-VS, Photo A

1.49ct Natural Orange-Gold Citrine, Octagon / Emerald Cut, VVS-VS

Citrine

1.49ct1 pc
$ 12.52
8 x 6 mm (calibrated)
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1.42ct Natural Deep Orange Hessonite Garnet, Octagon / Emerald Cut, VVS, Photo A

1.42ct Natural Deep Orange Hessonite Garnet, Octagon / Emerald Cut, VVS

Hessonite Garnet

1.42ct1 pc
$ 25.44
8 x 6 mm (calibrated)
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1.46ctw Natural Orange-Gold Citrine, Pear Shape, VVS-VS, Photo A

1.46ctw Natural Orange-Gold Citrine, Pear Shape, VVS-VS

Citrine

1.46ct total2 pcs
$ 14.02
7 x 5 mm (calibrated)
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1.48ct Natural Light Pink Kunzite, Cushion, VVS-VS, Photo A

1.48ct Natural Light Pink Kunzite, Cushion, VVS-VS

Kunzite

1.48ct1 pc
$ 44.40
6.5 x 6 mm
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1.18ct Natural Light Yellow Color-Change Diaspore, Cushion, VVS, Photo A

1.18ct Natural Light Yellow Color-Change Diaspore, Cushion, VVS

Color-Change Diaspore

1.18ct1 pc
$ 49.85
10.7 x 4.4 mm
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2.90ct Natural Medium Green Tourmaline, Flower Cut, Translucent, Photo A

2.90ct Natural Medium Green Tourmaline, Flower Cut, Translucent

Tourmaline

2.90ct1 pc
$ 38.28
11.5 x 9.4 mm
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1.88ctw Natural Yellowish Green Peridot, Oval, VVS-VS, Photo A

1.88ctw Natural Yellowish Green Peridot, Oval, VVS-VS

Peridot

1.88ct total2 pcs
$ 15.79
7 x 5 mm (calibrated)
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3.11ctw Natural Deep Golden Orange Citrine, Octagon / Emerald Cut, VVS-VS, Photo A

3.11ctw Natural Deep Golden Orange Citrine, Octagon / Emerald Cut, VVS-VS

Citrine

3.11ct total2 pcs
$ 23.66
8 x 6 mm (calibrated)
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3.84ct Natural Sky Blue Topaz, Heart, VVS-VS, Photo A

3.84ct Natural Sky Blue Topaz, Heart, VVS-VS

Topaz

3.84ct1 pc
$ 35.94
10 x 10 mm (calibrated)
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61.60ct Natural Pine Green Amazonite, Oval, Opaque, Photo A

61.60ct Natural Pine Green Amazonite, Oval, Opaque

Amazonite

61.60ct1 pc
$ 59.14
44.9 x 22.1 mm
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0.99ct Natural Light Gold Beryl, Oval, VVS-VS, Photo A

0.99ct Natural Light Gold Beryl, Oval, VVS-VS

Beryl

0.99ct1 pc
$ 23.76
8 x 6 mm (calibrated)
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12.95ct Natural Bluish White Rainbow Moonstone, Marquise, Transparent, Photo A

12.95ct Natural Bluish White Rainbow Moonstone, Marquise, Transparent

Rainbow Moonstone

12.95ct1 pc
$ 116.64
25.5 x 11.4 mm
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1.33ctw Natural Bluish White Rainbow Moonstone, Pear Shape, Transparent, Photo A

1.33ctw Natural Bluish White Rainbow Moonstone, Pear Shape, Transparent

Rainbow Moonstone

1.33ct total4 pcs
$ 29.84
5 x 5 mm (calibrated)
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6.51ct Natural Multicolor Rainbow Pyrite, Fancy, Opaque, Photo A

6.51ct Natural Multicolor Rainbow Pyrite, Fancy, Opaque

Rainbow Pyrite

6.51ct1 pc
$ 23.44
19.1 x 13.4 mm
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7.04ct Natural Multicolor Agate, Round, Translucent, Photo A

7.04ct Natural Multicolor Agate, Round, Translucent

Agate

7.04ct1 pc
$ 6.76
12 mm (calibrated)
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7.48ct Natural Swiss Blue Topaz, Cushion, Transparent, Photo A

7.48ct Natural Swiss Blue Topaz, Cushion, Transparent

Topaz

7.48ct1 pc
$ 59.24
11.7 x 11.4 mm
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3.47ctw Natural Bright Green Tsavorite Garnet, Pear Shape, VS, Photo A

3.47ctw Natural Bright Green Tsavorite Garnet, Pear Shape, VS

Tsavorite Garnet

3.47ct total20 pcs
$ 229.02
5 x 3 mm (calibrated)
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GemSelect Certified Store Reviews

GemSelect: Over 18 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

I would recommend gem select yo everyone Fast service and no problems

Posted By Steve in March, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I love the gems!

Posted By MM in April, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found the website easy to work with. The gemstones are lovely.

Posted By Sophie-Tiger in September, 2024
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I like the site, it's easy to navigate. There are sometimes items I'm looking for that aren't there, but mostly I can find what I need.

Posted By Nate in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, trusted quality. What I have purchased has always been as discribed.

Posted By Sterling in November, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

Love the ease of access. Easy to find what you are looking for, and fair pricing.

Posted By NickBehnke in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great site always looking for great deals and find them on this site

Posted By IRO5812 in July, 2024
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 would recommend gem select yo everyone Fast service and no problems

Posted By Steve in March, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I love the gems!

Posted By MM in April, 2025
Source: Bizrate

Overall Rating -> 8 star ratings

The website was nice and I bought some gems

Posted By Jay in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found the website easy to work with. The gemstones are lovely.

Posted By Sophie-Tiger in September, 2024
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I like the site, it's easy to navigate. There are sometimes items I'm looking for that aren't there, but mostly I can find what I need.

Posted By Nate in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, trusted quality. What I have purchased has always been as discribed.

Posted By Sterling in November, 2024
Source: Bizrate

Overall Rating -> 8 star ratings

Love the ease of access. Easy to find what you are looking for, and fair pricing.

Posted By NickBehnke in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Great site always looking for great deals and find them on this site

Posted By IRO5812 in July, 2024
Source: Bizrate
Enlarged Gemstone Image