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Calibrated 27 x 20 mm Octagon Shape Gemstones | GemSelect

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21.08ct Natural Swiss Blue Topaz, Pear Shape, VS, Photo A

21.08ct Natural Swiss Blue Topaz, Pear Shape, VS

Topaz

21.08ct1 pc
$ 138.58
21.9 x 14 mm
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4.58ctw Natural Deep Pink Berry Purple Rhodolite Garnet, Trillion, VS, Photo A

4.58ctw Natural Deep Pink Berry Purple Rhodolite Garnet, Trillion, VS

Rhodolite Garnet

4.58ct total10 pcs
$ 40.14
5.2 x 5.1 mm
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3.98ctw Natural Deep Red Pyrope Garnet, Marquise, VVS-VS, Photo A

3.98ctw Natural Deep Red Pyrope Garnet, Marquise, VVS-VS

Pyrope Garnet

3.98ct total2 pcs
$ 43.73
12 x 6 mm
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24.01ct Natural Medium Light Purplish-Violet Amethyst, Octagon / Emerald Cut, VVS, Photo A

24.01ct Natural Medium Light Purplish-Violet Amethyst, Octagon / Emerald Cut, VVS

Amethyst

24.01ct1 pc
$ 167.39
20 x 15 mm (calibrated)
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0.06ct Natural Blue Diamond, Round, VS, Photo A

0.06ct Natural Blue Diamond, Round, VS

Diamond

0.06ct1 pc
$ 49.80
2.5 mm (calibrated)
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2.68ct Natural Medium Orange Hessonite Garnet, Oval, VS-SI, Photo A

2.68ct Natural Medium Orange Hessonite Garnet, Oval, VS-SI

Hessonite Garnet

2.68ct1 pc
$ 58.72
9.3 x 7.7 mm
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2.92ctw Natural Light Green Peridot, Round, VVS-VS, Photo A

2.92ctw Natural Light Green Peridot, Round, VVS-VS

Peridot

2.92ct total6 pcs
$ 47.99
5 mm (calibrated)
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0.89ctw Natural Deep Brick Red Pyrope Garnet, Square, VVS-VS, Photo A

0.89ctw Natural Deep Brick Red Pyrope Garnet, Square, VVS-VS

Pyrope Garnet

0.89ct total2 pcs
$ 6.82
4 x 4 mm (calibrated)
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11.23ct Natural Blue Green Larimar, Oval, Opaque, Photo A

11.23ct Natural Blue Green Larimar, Oval, Opaque

Larimar

11.23ct1 pc
$ 134.10
18 x 13 mm (calibrated)
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4.72ct Natural Medium Golden Citrine, Oval, VVS-VS, Photo A

4.72ct Natural Medium Golden Citrine, Oval, VVS-VS

Citrine

4.72ct1 pc
$ 28.34
14 x 10 mm (calibrated)
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6.94ctw Natural Pink Tone Strawberry Quartz, Round, Transparent, Photo A
Strawberry Quartz Product Video (608480)

6.94ctw Natural Pink Tone Strawberry Quartz, Round, Transparent

Strawberry Quartz

6.94ct total2 pcs
$ 106.46
10 mm (calibrated)
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0.34ct Natural Deep Azure Blue Kyanite, Round, SI, Photo A

0.34ct Natural Deep Azure Blue Kyanite, Round, SI

Kyanite

0.34ct1 pc
$ 8.47
4 mm (calibrated)
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14.06ct Natural Forest Green Aventurine, Oval, Translucent, Photo A

14.06ct Natural Forest Green Aventurine, Oval, Translucent

Aventurine

14.06ct1 pc
$ 14.00
28.2 x 13.5 mm
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4.78ctw Natural Sky Blue Topaz, Marquise, VVS-VS, Photo A

4.78ctw Natural Sky Blue Topaz, Marquise, VVS-VS

Topaz

4.78ct total2 pcs
$ 26.19
12.2 x 6.1 mm
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4.12ct Natural Mint Green Jadeite, Oval, Opaque, Photo A
Jadeite Product Video (643697)

4.12ct Natural Mint Green Jadeite, Oval, Opaque

Jadeite

4.12ct1 pc
$ 31.11
12 x 10 mm (calibrated)
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0.97ct Natural Light Green Tourmaline, Octagon / Emerald Cut, VVS-VS, Photo A

0.97ct Natural Light Green Tourmaline, Octagon / Emerald Cut, VVS-VS

Tourmaline

0.97ct1 pc
$ 48.31
11.1 x 3.6 mm
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12.49ct Natural Medium Violet Amethyst, Cushion, VVS, Photo A

12.49ct Natural Medium Violet Amethyst, Cushion, VVS

Amethyst

12.49ct1 pc
$ 99.52
18 x 13 mm (calibrated)
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1.83ct Natural Pinkish Violet Purple Kunzite, Octagon / Emerald Cut, VVS-VS, Photo A

1.83ct Natural Pinkish Violet Purple Kunzite, Octagon / Emerald Cut, VVS-VS

Kunzite

1.83ct1 pc
$ 50.36
6.7 x 5.7 mm
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0.82ct Natural Pinkish Purple Spinel, Oval, VS, Photo A

0.82ct Natural Pinkish Purple Spinel, Oval, VS

Spinel

0.82ct1 pc
$ 68.06
5.9 x 5.1 mm
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11.47ct Natural Medium Green Serpentine, Oval, Translucent, Photo A

11.47ct Natural Medium Green Serpentine, Oval, Translucent

Serpentine

11.47ct1 pc
$ 24.56
21.5 x 13.7 mm
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9.54ct Natural Seaweed Green Serpentine, Oval, Translucent, Photo A

9.54ct Natural Seaweed Green Serpentine, Oval, Translucent

Serpentine

9.54ct1 pc
$ 20.43
19.2 x 13.5 mm
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56.57ct Natural Multicolor Fossil Coral, Marquise, Opaque, Photo A
Fossil Coral Product Video (447468)

56.57ct Natural Multicolor Fossil Coral, Marquise, Opaque

Fossil Coral

56.57ct1 pc
$ 90.15
66.4 x 24.2 mm
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8.63ct Natural Light Pink Kunzite, Pear Shape, VVS, Photo A
Kunzite Product Video (694868)

8.63ct Natural Light Pink Kunzite, Pear Shape, VVS

Kunzite

8.63ct1 pc
$ 214.89
15 x 10 mm (calibrated)
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0.65ct Natural Medium Yellow Sphalerite, Oval, VS-SI, Photo A

0.65ct Natural Medium Yellow Sphalerite, Oval, VS-SI

Sphalerite

0.65ct1 pc
$ 32.37
5.6 x 4.6 mm
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1.13ct Natural Medium Light Brown Color-Change Garnet, Cushion, VS, Photo A

1.13ct Natural Medium Light Brown Color-Change Garnet, Cushion, VS

Color-Change Garnet

1.13ct1 pc
$ 90.28
6.5 x 5.1 mm
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1.69ct Natural Medium Yellow Beryl, Round, VVS, Photo A

1.69ct Natural Medium Yellow Beryl, Round, VVS

Beryl

1.69ct1 pc
$ 33.66
8 mm (calibrated)
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4.50ctw Natural Sky Blue Topaz, Round, VS, Photo A

4.50ctw Natural Sky Blue Topaz, Round, VS

Topaz

4.50ct total2 pcs
$ 31.56
8 mm (calibrated)
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10.08ct Natural Light Rose Pink Rose Quartz, Octagon / Emerald Cut, Transparent, Photo A

10.08ct Natural Light Rose Pink Rose Quartz, Octagon / Emerald Cut, Transparent

Rose Quartz

10.08ct1 pc
$ 55.22
12.5 x 12.5 mm
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20.87ct Natural Light White Scolecite, Pear Shape, Opaque, Photo A

20.87ct Natural Light White Scolecite, Pear Shape, Opaque

Scolecite

20.87ct1 pc
$ 24.93
27 x 20 mm (calibrated)
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1.18ct Natural Multicolor Black Opal, Oval, Translucent, Photo A

1.18ct Natural Multicolor Black Opal, Oval, Translucent

Black Opal

1.18ct1 pc
$ 29.38
10.1 x 7.4 mm
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0.36ct Natural Medium Orange Sapphire, Heart, VS, Photo A

0.36ct Natural Medium Orange Sapphire, Heart, VS

Sapphire

0.36ct1 pc
$ 22.23
4.6 x 4.4 mm
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1.35ct Natural Peach Orange Moonstone, Marquise, Translucent, Photo A

1.35ct Natural Peach Orange Moonstone, Marquise, Translucent

Moonstone

1.35ct1 pc
$ 2.69
9.6 x 5.4 mm
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Why Buy Octagon Shape 27 X 20 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

Recomendado Totalmente Los Productos Se Entregaron A Tiempo

Posted By Alexis in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

the selection is good as are the prices

Posted By Old man in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Loved the price and the quality and the certification options which is the main reason why I buy. The guarantee is also a great reason to use gem select.

Posted By Sal in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I loved the selection of gemstones you have a to z

Posted By James in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Had a great experience and the prices are great

Posted By BuBx99 in November, 2025
Source: Bizrate
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