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Buy Octagon Shape 14x12 mm Gems

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3.44ctw Natural Cantaloupe Orange Moonstone, Oval, Translucent, Photo A

3.44ctw Natural Cantaloupe Orange Moonstone, Oval, Translucent

Moonstone

3.44ct total2 pcs
$ 8.29
8 x 6 mm (calibrated)
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0.51ct Natural Medium Red Sapphire, Oval, VVS, Photo A

0.51ct Natural Medium Red Sapphire, Oval, VVS

Sapphire

0.51ct1 pc
$ 91.80
6 x 4 mm (calibrated)
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7.13ct Natural Very Light Pinkish Purple Kunzite, Oval, VS, Photo A
Kunzite Product Video (453617)

7.13ct Natural Very Light Pinkish Purple Kunzite, Oval, VS

Kunzite

7.13ct1 pc
$ 235.30
16.7 x 7.7 mm
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2.02ctw Natural Golden Beryl, Oval, VVS, Photo A

2.02ctw Natural Golden Beryl, Oval, VVS

Beryl

2.02ct total2 pcs
$ 60.60
8 x 6 mm (calibrated)
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25.43ct Natural Multicolor Jasper, Oval, Opaque, Photo A

25.43ct Natural Multicolor Jasper, Oval, Opaque

Jasper

25.43ct1 pc
$ 25.33
25.1 x 18.8 mm
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4.09ctw Natural Dark Red Almandine Garnet, Oval, VS, Photo A

4.09ctw Natural Dark Red Almandine Garnet, Oval, VS

Almandine Garnet

4.09ct total2 pcs
$ 184.05
9 x 7 mm (calibrated)
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1.08ct Natural Warm Yellow Color-Change Diaspore, Pear Shape, VVS-VS, Photo A

1.08ct Natural Warm Yellow Color-Change Diaspore, Pear Shape, VVS-VS

Color-Change Diaspore

1.08ct1 pc
$ 45.62
9.9 x 4.9 mm
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2.23ctw Natural Medium Light Brown Color-Change Garnet, Oval, VVS, Photo A

2.23ctw Natural Medium Light Brown Color-Change Garnet, Oval, VVS

Color-Change Garnet

2.23ct total2 pcs
$ 214.64
7 x 5.5 mm
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0.47ctw Natural Medium Grey Chrysoberyl Cat's Eye, Round, Opaque, Photo A

0.47ctw Natural Medium Grey Chrysoberyl Cat's Eye, Round, Opaque

Chrysoberyl Cat's Eye

0.47ct total2 pcs
$ 17.92
3.5 mm (calibrated)
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2.45ct Natural Black Star Sapphire, Oval, Opaque, Photo A

2.45ct Natural Black Star Sapphire, Oval, Opaque

Star Sapphire

2.45ct1 pc
$ 52.92
8.5 x 6.2 mm
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7.36ct Natural Schorl Tourmaline, Oval, Opaque, Photo A

7.36ct Natural Schorl Tourmaline, Oval, Opaque

Tourmaline

7.36ct1 pc
$ 44.16
13.4 x 11.2 mm
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0.61ct Natural Bright Red Pyrope Garnet, Pear Shape, VS, Photo A

0.61ct Natural Bright Red Pyrope Garnet, Pear Shape, VS

Pyrope Garnet

0.61ct1 pc
$ 18.30
5.3 x 5.1 mm
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3.89ctw Natural Medium Orange Zircon, Round, VS, Photo A
Zircon Product Video (442155)

3.89ctw Natural Medium Orange Zircon, Round, VS

Zircon

3.89ct total2 pcs
$ 85.58
7 mm (calibrated)
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1.29ct Natural Light Yellow Beryl, Oval, VVS-VS, Photo A

1.29ct Natural Light Yellow Beryl, Oval, VVS-VS

Beryl

1.29ct1 pc
$ 30.96
8.8 x 6.7 mm
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1.73ct Natural Cantaloupe Orange Moonstone, Trillion, Translucent, Photo A

1.73ct Natural Cantaloupe Orange Moonstone, Trillion, Translucent

Moonstone

1.73ct1 pc
$ 4.15
8 x 8 mm (calibrated)
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40.56ct Natural Deep Aqua Blue Aquamarine, Octagon / Emerald Cut, VVS, Photo A
Aquamarine Product Video (264265)

40.56ct Natural Deep Aqua Blue Aquamarine, Octagon / Emerald Cut, VVS

Aquamarine

40.56ct1 pc
$ 12,995.00
22 x 17.5 mm
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13.97ctw Natural Black Spinel, Round, Opaque, Photo A

13.97ctw Natural Black Spinel, Round, Opaque

Spinel

13.97ct total2 pcs
$ 55.32
12 mm (calibrated)
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1.22ct Natural Light Red Ruby, Round, VS, Photo A

1.22ct Natural Light Red Ruby, Round, VS

Ruby

1.22ct1 pc
$ 131.76
5.8 mm
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1.16ct Natural Orange Pink Tourmaline, Octagon / Emerald Cut, VS, Photo A

1.16ct Natural Orange Pink Tourmaline, Octagon / Emerald Cut, VS

Tourmaline

1.16ct1 pc
$ 105.65
8.4 x 4.4 mm
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0.91ctw Natural Light Lively Green Peridot, Pear Shape, VVS-VS, Photo A

0.91ctw Natural Light Lively Green Peridot, Pear Shape, VVS-VS

Peridot

0.91ct total2 pcs
$ 8.41
6 x 4 mm (calibrated)
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8.52ct Natural Multicolor Coral, Oval, Translucent, Photo A

8.52ct Natural Multicolor Coral, Oval, Translucent

Coral

8.52ct1 pc
$ 32.05
19.4 x 13.8 mm
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3.09ct Natural Green-Blue Grandidierite, Oval, Translucent, Photo A

3.09ct Natural Green-Blue Grandidierite, Oval, Translucent

Grandidierite

3.09ct1 pc
$ 203.94
9.6 x 7.4 mm
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0.94ctw Natural Multicolor Opal, Oval, Transparent, Photo A

0.94ctw Natural Multicolor Opal, Oval, Transparent

Opal

0.94ct total2 pcs
$ 310.20
7 x 5 mm (calibrated)
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1.67ctw Natural Medium Dark-Green Chrome Diopside, Marquise, VS, Photo A

1.67ctw Natural Medium Dark-Green Chrome Diopside, Marquise, VS

Chrome Diopside

1.67ct total2 pcs
$ 50.10
10 x 5 mm (calibrated)
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1.84ct Natural Intense Red Orange Fire Opal, Oval, Transparent, Photo A
Fire Opal Product Video (673701)

1.84ct Natural Intense Red Orange Fire Opal, Oval, Transparent

Fire Opal

1.84ct1 pc
$ 77.28
10.6 x 7.9 mm
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1.69ctw Natural White Zircon, Oval, VVS, Photo A

1.69ctw Natural White Zircon, Oval, VVS

Zircon

1.69ct total2 pcs
$ 12.23
6 x 4 mm (calibrated)
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10.87ct Natural Pinkish Violet Purple Kunzite, Cushion, VVS-VS, Photo A
Kunzite Product Video (693496)

10.87ct Natural Pinkish Violet Purple Kunzite, Cushion, VVS-VS

Kunzite

10.87ct1 pc
$ 360.41
12.5 x 12.3 mm
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5.32ctw Natural Medium Orange Moonstone, Cushion, Translucent, Photo A

5.32ctw Natural Medium Orange Moonstone, Cushion, Translucent

Moonstone

5.32ct total2 pcs
$ 12.77
9 x 7 mm (calibrated)
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2.45ctw Natural White Zircon, Oval, VVS, Photo A

2.45ctw Natural White Zircon, Oval, VVS

Zircon

2.45ct total2 pcs
$ 28.98
7 x 5 mm (calibrated)
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3.25ctw Natural Golden Citrine, Pear Shape, VVS-VS, Photo A

3.25ctw Natural Golden Citrine, Pear Shape, VVS-VS

Citrine

3.25ct total5 pcs
$ 24.78
8 x 5 mm (calibrated)
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3.58ct Natural Multicolor Labradorite, Round, Translucent, Photo A

3.58ct Natural Multicolor Labradorite, Round, Translucent

Labradorite

3.58ct1 pc
$ 10.49
9 mm (calibrated)
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18.94ct Natural Rose Pink Rose Quartz, Oval, Transparent, Photo A

18.94ct Natural Rose Pink Rose Quartz, Oval, Transparent

Rose Quartz

18.94ct1 pc
$ 30.00
16.8 x 15.5 mm
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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

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones. .

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones..

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have bought from you before and have found your gems exceed my expectations. I have been very satisfied with all gems sent to me. I will be back. Thanks....

Posted By Dork in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect website simple to use. I recommend it to non-trade clients looking for gems.

Posted By GemJocky in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I was looking for

Posted By Lincolnpremier in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.

Posted By LeAnn in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This was a great time as always. The only problem I had was deciding between all the beautiful and affordable stones that met my requirements. I love shopping for sapphires!

Posted By Phoenix in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.

Posted By Sam in March, 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.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10 star ratings

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones. .

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

looked at pink stones and at sapphires bought some sapphires. I love looking and collecting gemstones..

Posted By Steven M. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Gem Select has a user friendly website and the product is very good as is the price. The gems are described accurately and I always get what I think I'm getting.

Posted By Happy Customer in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have bought from you before and have found your gems exceed my expectations. I have been very satisfied with all gems sent to me. I will be back. Thanks....

Posted By Dork in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect website simple to use. I recommend it to non-trade clients looking for gems.

Posted By GemJocky in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I was looking for

Posted By Lincolnpremier in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.

Posted By LeAnn in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

This was a great time as always. The only problem I had was deciding between all the beautiful and affordable stones that met my requirements. I love shopping for sapphires!

Posted By Phoenix in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have found GemSelect to have the best selections of quality stones at a reasonable price. I like the packaging and the report availability.

Posted By Sam in March, 2025
Source: Bizrate
Enlarged Gemstone Image