X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Buy Octagon Shape 27 x 20 mm Gems

Exact Match not Available: Go Back
4.47ct Natural Deep Violet Amethyst, Pear Shape, VVS, Photo A

4.47ct Natural Deep Violet Amethyst, Pear Shape, VVS

Amethyst

4.47ct1 pc
$ 39.12
14 x 10 mm (calibrated)
View Details
Add to Cart
7.51ctw Natural Swiss Blue Topaz, Marquise, VVS, Photo A

7.51ctw Natural Swiss Blue Topaz, Marquise, VVS

Topaz

7.51ct total2 pcs
$ 69.40
15 x 6.7 mm
View Details
Add to Cart
14.98ct Natural Medium Red Ruby, Oval, VS, Photo A
Ruby Product Video (666891)

14.98ct Natural Medium Red Ruby, Oval, VS

Ruby

14.98ct1 pc
$ 988.68
15.8 x 13.1 mm
View Details
Add to Cart
4.79ctw Natural Gold Citrine, Pear Shape, VS, Photo A

4.79ctw Natural Gold Citrine, Pear Shape, VS

Citrine

4.79ct total6 pcs
$ 31.62
8 x 5 mm (calibrated)
View Details
Add to Cart
4.25ct Natural Medium-Dark Golden Citrine, Baguette, VS, Photo A

4.25ct Natural Medium-Dark Golden Citrine, Baguette, VS

Citrine

4.25ct1 pc
$ 39.28
13.9 x 7.1 mm
View Details
Add to Cart
8.40ctw Natural Black Spinel, Round, Opaque, Photo A

8.40ctw Natural Black Spinel, Round, Opaque

Spinel

8.40ct total2 pcs
$ 33.26
10 mm (calibrated)
View Details
Add to Cart
0.42ct Natural Warm Forest Green Sapphire, Octagon / Emerald Cut, VVS-VS, Photo A

0.42ct Natural Warm Forest Green Sapphire, Octagon / Emerald Cut, VVS-VS

Sapphire

0.42ct1 pc
$ 47.88
5.2 x 3.3 mm
View Details
Add to Cart
3.89ctw Natural Dark Red Pyrope Garnet, Marquise, VVS-VS, Photo A

3.89ctw Natural Dark Red Pyrope Garnet, Marquise, VVS-VS

Pyrope Garnet

3.89ct total2 pcs
$ 41.08
12 x 6 mm
View Details
Add to Cart
9.77ct Natural Multicolor Rainbow Pyrite, Oval, Opaque, Photo A

9.77ct Natural Multicolor Rainbow Pyrite, Oval, Opaque

Rainbow Pyrite

9.77ct1 pc
$ 30.36
24.7 x 11.3 mm
View Details
Add to Cart
2.21ctw Natural Intense Violet Blue Tanzanite, Pear Shape, VVS-VS, Photo A
Tanzanite Product Video (420101)

2.21ctw Natural Intense Violet Blue Tanzanite, Pear Shape, VVS-VS

Tanzanite

2.21ct total6 pcs
$ 128.47
6 x 3.8 mm
View Details
Add to Cart
7.91ct Natural Medium Green Jadeite, Round, Translucent, Photo A

7.91ct Natural Medium Green Jadeite, Round, Translucent

Jadeite

7.91ct1 pc
$ 31.32
12 mm (calibrated)
View Details
Add to Cart
0.86ct Natural Tuscany Yellow Beryl, Oval, VS, Photo A

0.86ct Natural Tuscany Yellow Beryl, Oval, VS

Beryl

0.86ct1 pc
$ 20.64
8 x 6 mm (calibrated)
View Details
Add to Cart
4.10ctw Natural Medium-Dark Orange Hessonite Garnet, Octagon / Emerald Cut, VS, Photo A

4.10ctw Natural Medium-Dark Orange Hessonite Garnet, Octagon / Emerald Cut, VS

Hessonite Garnet

4.10ct total4 pcs
$ 108.24
6.6 x 4.6 mm
View Details
Add to Cart
3.91ct Natural Light Coral Pink Morganite, Marquise, Translucent, Photo A

3.91ct Natural Light Coral Pink Morganite, Marquise, Translucent

Morganite

3.91ct1 pc
$ 51.61
16.8 x 6.8 mm
View Details
Add to Cart
1.79ct Natural Swiss Blue Topaz, Octagon / Emerald Cut, VVS, Photo A

1.79ct Natural Swiss Blue Topaz, Octagon / Emerald Cut, VVS

Topaz

1.79ct1 pc
$ 17.18
8 x 6 mm (calibrated)
View Details
Add to Cart
3.08ct Natural Light Pink Tourmaline, Octagon / Emerald Cut, VS-SI, Photo A
Tourmaline Product Video (544804)

3.08ct Natural Light Pink Tourmaline, Octagon / Emerald Cut, VS-SI

Tourmaline

3.08ct1 pc
$ 280.52
9.5 x 6.5 mm
View Details
Add to Cart
0.39ct Natural Deep Orange Spessartite Garnet, Oval, SI, Photo A

0.39ct Natural Deep Orange Spessartite Garnet, Oval, SI

Spessartite Garnet

0.39ct1 pc
$ 15.91
5.3 x 3.9 mm
View Details
Add to Cart
0.61ct Natural Multicolor Opal, Pear Shape, Transparent, Photo A

0.61ct Natural Multicolor Opal, Pear Shape, Transparent

Opal

0.61ct1 pc
$ 18.30
8 x 5 mm (calibrated)
View Details
Add to Cart
24.36ct Natural Swiss Blue Topaz, Fancy, Transparent, Photo A
Topaz Product Video (474498)

24.36ct Natural Swiss Blue Topaz, Fancy, Transparent

Topaz

24.36ct1 pc
$ 160.78
28 x 15.6 mm
View Details
Add to Cart
2.13ctw Natural White Zircon, Oval, VVS-VS, Photo A

2.13ctw Natural White Zircon, Oval, VVS-VS

Zircon

2.13ct total2 pcs
$ 15.23
7 x 5 mm (calibrated)
View Details
Add to Cart
1.70ct Natural Light Pink Strawberry Quartz, Round, Translucent, Photo A

1.70ct Natural Light Pink Strawberry Quartz, Round, Translucent

Strawberry Quartz

1.70ct1 pc
$ 15.71
8 mm (calibrated)
View Details
Add to Cart
1.48ct Natural Earthy Green Tourmaline, Octagon / Emerald Cut, VVS, Photo A

1.48ct Natural Earthy Green Tourmaline, Octagon / Emerald Cut, VVS

Tourmaline

1.48ct1 pc
$ 37.32
15.6 x 3.4 mm
View Details
Add to Cart
1.96ct Natural Deep Red Ruby, Oval, VS-SI, Photo A

1.96ct Natural Deep Red Ruby, Oval, VS-SI

Ruby

1.96ct1 pc
$ 211.68
8 x 6 mm (calibrated)
View Details
Add to Cart
1.49ctw Natural Deep Blood Red Rhodolite Garnet, Square, VS, Photo A

1.49ctw Natural Deep Blood Red Rhodolite Garnet, Square, VS

Rhodolite Garnet

1.49ct total2 pcs
$ 15.72
5 x 5 mm (calibrated)
View Details
Add to Cart
1.39ct Natural Warm Yellow Beryl, Trillion, VS, Photo A

1.39ct Natural Warm Yellow Beryl, Trillion, VS

Beryl

1.39ct1 pc
$ 40.03
8 x 8 mm (calibrated)
View Details
Add to Cart
3.07ct Natural Light Yellow Citrine, Flower Cut, Transparent, Photo A

3.07ct Natural Light Yellow Citrine, Flower Cut, Transparent

Citrine

3.07ct1 pc
$ 28.37
9 x 9 mm (calibrated)
View Details
Add to Cart
0.38ct Natural Deep Orange Sapphire, Heart, VVS, Photo A

0.38ct Natural Deep Orange Sapphire, Heart, VVS

Sapphire

0.38ct1 pc
$ 28.27
4.7 x 4.6 mm
View Details
Add to Cart
1.13ct Natural Medium Brown Smoky Quartz, Round, VVS, Photo A

1.13ct Natural Medium Brown Smoky Quartz, Round, VVS

Smoky Quartz

1.13ct1 pc
$ 9.49
7 mm (calibrated)
View Details
Add to Cart
3.02ctw Natural Deep Red Rhodolite Garnet, Square, VS, Photo A

3.02ctw Natural Deep Red Rhodolite Garnet, Square, VS

Rhodolite Garnet

3.02ct total4 pcs
$ 31.85
5 x 5 mm (calibrated)
View Details
Add to Cart
7.83ct Natural Green Malachite, Oval, Opaque, Photo A

7.83ct Natural Green Malachite, Oval, Opaque

Malachite

7.83ct1 pc
$ 7.83
14 x 10 mm (calibrated)
View Details
Add to Cart
1.54ct Natural Orangish Gold Tourmaline, Oval, VVS, Photo A

1.54ct Natural Orangish Gold Tourmaline, Oval, VVS

Tourmaline

1.54ct1 pc
$ 215.60
7 x 6.4 mm
View Details
Add to Cart
1.15ct Natural Medium Gold Citrine, Round, VVS, Photo A

1.15ct Natural Medium Gold Citrine, Round, VVS

Citrine

1.15ct1 pc
$ 11.04
7 mm (calibrated)
View Details
Add to Cart

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

It was all good

Posted By Debsarabs in February, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

the gems were smaller than I thought but I was at fault for not reading the complete discrimination

Posted By Tim in May, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great selection. Maybe too great i kept adding and deleting stuff because i found better looking ones

Posted By Edsor works in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

First time so this is an experiment! Shopping is so fun on this site, though!

Posted By Gem Delight in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience. I can't wait to explore on the website further.

Posted By Kymmie in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image