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 Laguna Yellow Quartz, Flower Cut, Transparent, Photo A

4.47ct Natural Laguna Yellow Quartz, Flower Cut, Transparent

Quartz

4.47ct1 pc
$ 9.79
12 x 12 mm (calibrated)
View Details
Add to Cart
1.65ct Natural White Zircon, Round, VVS-VS, Photo A

1.65ct Natural White Zircon, Round, VVS-VS

Zircon

1.65ct1 pc
$ 54.46
7 mm (calibrated)
View Details
Add to Cart
0.78ct Natural Orange Pink Tourmaline, Oval, Transparent, Photo A

0.78ct Natural Orange Pink Tourmaline, Oval, Transparent

Tourmaline

0.78ct1 pc
$ 37.44
6.1 x 4.9 mm
View Details
Add to Cart
3.65ctw Natural Deep Red Almandine Garnet, Baguette, VVS-VS, Photo A

3.65ctw Natural Deep Red Almandine Garnet, Baguette, VVS-VS

Almandine Garnet

3.65ct total2 pcs
$ 153.30
10.1 x 5.2 mm
View Details
Add to Cart
20.80ctw Natural Multicolor Fossil Coral, Oval, Opaque, Photo A

20.80ctw Natural Multicolor Fossil Coral, Oval, Opaque

Fossil Coral

20.80ct total2 pcs
$ 32.39
19.4 x 11.3 mm
View Details
Add to Cart
5.61ct Natural Rose Pink Strawberry Quartz, Oval, Translucent, Photo A

5.61ct Natural Rose Pink Strawberry Quartz, Oval, Translucent

Strawberry Quartz

5.61ct1 pc
$ 40.74
14 x 10 mm (calibrated)
View Details
Add to Cart
15.10ct Natural Bright Blue Color-Change Fluorite, Round, VS, Photo A
Color-Change Fluorite Product Video (413697)

15.10ct Natural Bright Blue Color-Change Fluorite, Round, VS

Color-Change Fluorite

15.10ct1 pc
$ 498.30
15 mm (calibrated)
View Details
Add to Cart
1.85ctw Natural Deep Red Pyrope Garnet, Pear Shape, VVS-VS, Photo A

1.85ctw Natural Deep Red Pyrope Garnet, Pear Shape, VVS-VS

Pyrope Garnet

1.85ct total2 pcs
$ 17.76
7 x 5 mm (calibrated)
View Details
Add to Cart
0.48ct Natural Bright Gold Citrine, Heart, VVS-VS, Photo A

0.48ct Natural Bright Gold Citrine, Heart, VVS-VS

Citrine

0.48ct1 pc
$ 4.61
5.4 x 5.2 mm
View Details
Add to Cart
7.46ct Natural Medium Brown Smoky Quartz, Round, VVS-VS, Photo A

7.46ct Natural Medium Brown Smoky Quartz, Round, VVS-VS

Smoky Quartz

7.46ct1 pc
$ 14.77
13 mm (calibrated)
View Details
Add to Cart
10.40ct Natural Multicolor Rainbow Pyrite, Trillion, Opaque, Photo A

10.40ct Natural Multicolor Rainbow Pyrite, Trillion, Opaque

Rainbow Pyrite

10.40ct1 pc
$ 32.45
23.1 x 14 mm
View Details
Add to Cart
1.65ctw Natural Sky Blue Topaz, Pear Shape, VVS-VS, Photo A

1.65ctw Natural Sky Blue Topaz, Pear Shape, VVS-VS

Topaz

1.65ct total2 pcs
$ 10.86
7 x 5 mm (calibrated)
View Details
Add to Cart
49.05ct Natural Multicolor Jasper, Oval, Opaque, Photo A

49.05ct Natural Multicolor Jasper, Oval, Opaque

Jasper

49.05ct1 pc
$ 64.75
37.4 x 21.7 mm
View Details
Add to Cart
0.55ct Natural Light Grayish Purple Spinel, Round, VVS-VS, Photo A

0.55ct Natural Light Grayish Purple Spinel, Round, VVS-VS

Spinel

0.55ct1 pc
$ 34.75
4.7 mm
View Details
Add to Cart
3.11ct Natural Forest Green Agate, Oval, Translucent, Photo A

3.11ct Natural Forest Green Agate, Oval, Translucent

Agate

3.11ct1 pc
$ 4.07
10.5 x 7.9 mm
View Details
Add to Cart
4.57ctw Natural Clear White Topaz, Square, VVS-VS, Photo A

4.57ctw Natural Clear White Topaz, Square, VVS-VS

Topaz

4.57ct total10 pcs
$ 44.34
4 x 4 mm (calibrated)
View Details
Add to Cart
1.35ctw Natural Multicolor Sapphire, Square, VS, Photo A

1.35ctw Natural Multicolor Sapphire, Square, VS

Sapphire

1.35ct total15 pcs
$ 194.40
2.4 x 2.3 mm
View Details
Add to Cart
1.46ct Natural Earthy Green Tourmaline, Octagon / Emerald Cut, VVS-VS, Photo A

1.46ct Natural Earthy Green Tourmaline, Octagon / Emerald Cut, VVS-VS

Tourmaline

1.46ct1 pc
$ 46.25
13 x 3.5 mm
View Details
Add to Cart
63.65ct Natural Multicolor Jasper, Oval, Opaque, Photo A
Jasper Product Video (585895)

63.65ct Natural Multicolor Jasper, Oval, Opaque

Jasper

63.65ct1 pc
$ 37.80
40 x 31.7 mm
View Details
Add to Cart
52.80ct Natural Multicolor Chrysocolla, Pear Shape, Opaque, Photo A
Chrysocolla Product Video (658698)

52.80ct Natural Multicolor Chrysocolla, Pear Shape, Opaque

Chrysocolla

52.80ct1 pc
$ 108.35
26.8 x 25.2 mm
View Details
Add to Cart
2.93ct Natural Deep Orange Pyrope Garnet, Fancy, Translucent, Photo A

2.93ct Natural Deep Orange Pyrope Garnet, Fancy, Translucent

Pyrope Garnet

2.93ct1 pc
$ 8.86
12 x 8.7 mm
View Details
Add to Cart
0.36ct Natural Very Light Pink Morganite, Round, VS, Photo A

0.36ct Natural Very Light Pink Morganite, Round, VS

Morganite

0.36ct1 pc
$ 18.00
4.7 mm
View Details
Add to Cart
7.68ctw Natural Light Pink Rose Quartz, Octagon / Emerald Cut, Transparent, Photo A

7.68ctw Natural Light Pink Rose Quartz, Octagon / Emerald Cut, Transparent

Rose Quartz

7.68ct total2 pcs
$ 50.69
10 x 10 mm (calibrated)
View Details
Add to Cart
5.49ct Natural Multicolor Mystic Quartz, Oval, VS, Photo A

5.49ct Natural Multicolor Mystic Quartz, Oval, VS

Mystic Quartz

5.49ct1 pc
$ 46.12
13 x 11 mm (calibrated)
View Details
Add to Cart
3.20ctw Natural Navy Blue Kyanite, Oval, SI, Photo A

3.20ctw Natural Navy Blue Kyanite, Oval, SI

Kyanite

3.20ct total2 pcs
$ 66.88
8 x 6 mm (calibrated)
View Details
Add to Cart
1.40ct Natural Multicolor Black Opal, Oval, Opaque, Photo A

1.40ct Natural Multicolor Black Opal, Oval, Opaque

Black Opal

1.40ct1 pc
$ 42.00
9.9 x 7.6 mm
View Details
Add to Cart
12.16ct Natural Clear with Black Rutile Quartz, Sphere / Ball, Translucent, Photo A

12.16ct Natural Clear with Black Rutile Quartz, Sphere / Ball, Translucent

Rutile Quartz

12.16ct1 pc
$ 16.86
12 mm (calibrated)
View Details
Add to Cart
1.34ct Natural Multicolor Opal, Oval, Translucent, Photo A

1.34ct Natural Multicolor Opal, Oval, Translucent

Opal

1.34ct1 pc
$ 74.29
9.7 x 7.6 mm
View Details
Add to Cart
4.50ct Natural Clear with Brown Rutile Quartz, Round, Translucent, Photo A

4.50ct Natural Clear with Brown Rutile Quartz, Round, Translucent

Rutile Quartz

4.50ct1 pc
$ 13.61
11 mm (calibrated)
View Details
Add to Cart
3.67ctw Natural Medium-Dark Brown Smoky Quartz, Round, VS, Photo A

3.67ctw Natural Medium-Dark Brown Smoky Quartz, Round, VS

Smoky Quartz

3.67ct total2 pcs
$ 9.68
8 mm (calibrated)
View Details
Add to Cart
0.87ct Natural Gold Color-Change Garnet, Cushion, VS-SI, Photo A

0.87ct Natural Gold Color-Change Garnet, Cushion, VS-SI

Color-Change Garnet

0.87ct1 pc
$ 103.36
8 x 4.5 mm
View Details
Add to Cart
2.25ct Natural Deep Orange-Gold Citrine, Cushion, VS, Photo A

2.25ct Natural Deep Orange-Gold Citrine, Cushion, VS

Citrine

2.25ct1 pc
$ 18.90
9.8 x 7.3 mm
View Details
Add to Cart

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

selection was broad and the check out was quick. Great site

Posted By JC Karl in September, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

love these guys been ordering since 2000 maybe

Posted By JHT in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have a beautiful emerald I purchased from a company names gemselect and they are awesome! You should try them out?

Posted By Lynn in September, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love Gem Select! When you order what you see is what you get. As soon as you make payment that particular gem is taken off the photo album. That way the one you select is a one of that kind.

Posted By Desertchick in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far, my experience was great...Thanks

Posted By Kaydi in May, 2025
Source: Bizrate
Enlarged Gemstone Image