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
30.70ct Natural Multicolor Pietersite, Oval, Opaque, Photo A
Pietersite Product Video (351524)

30.70ct Natural Multicolor Pietersite, Oval, Opaque

Pietersite

30.70ct1 pc
$ 162.10
30 x 22 mm (calibrated)
View Details
Add to Cart
4.58ctw Natural Pale Yellowish Green Prehnite, Oval, Transparent, Photo A

4.58ctw Natural Pale Yellowish Green Prehnite, Oval, Transparent

Prehnite

4.58ct total2 pcs
$ 30.23
8.6 x 8 mm
View Details
Add to Cart
12.51ct Natural Multicolor Labradorite, Pear Shape, Translucent, Photo A

12.51ct Natural Multicolor Labradorite, Pear Shape, Translucent

Labradorite

12.51ct1 pc
$ 33.32
18 x 13 mm (calibrated)
View Details
Add to Cart
3.14ct Natural Golden Orange Citrine, Square, VS, Photo A

3.14ct Natural Golden Orange Citrine, Square, VS

Citrine

3.14ct1 pc
$ 24.86
9 x 9 mm (calibrated)
View Details
Add to Cart
39.34ct Natural Greenish Yellow Quartz, Oval, VVS, Photo A

39.34ct Natural Greenish Yellow Quartz, Oval, VVS

Quartz

39.34ct1 pc
$ 54.53
25.8 x 19.3 mm
View Details
Add to Cart
9.43ctw Natural Multicolor Labradorite, Round, Translucent, Photo A

9.43ctw Natural Multicolor Labradorite, Round, Translucent

Labradorite

9.43ct total2 pcs
$ 24.90
12 mm (calibrated)
View Details
Add to Cart
0.94ct Natural Medium Light-Pink Morganite, Heart, VVS-VS, Photo A
Morganite Product Video (473604)

0.94ct Natural Medium Light-Pink Morganite, Heart, VVS-VS

Morganite

0.94ct1 pc
$ 99.26
6.2 x 6.8 mm
View Details
Add to Cart
7.78ct Natural Reddish Purple Star Ruby, Oval, Opaque, Photo A

7.78ct Natural Reddish Purple Star Ruby, Oval, Opaque

Star Ruby

7.78ct1 pc
$ 112.03
12 x 10 mm (calibrated)
View Details
Add to Cart
5.95ct Natural Black Star Diopside, Oval, Opaque, Photo A

5.95ct Natural Black Star Diopside, Oval, Opaque

Star Diopside

5.95ct1 pc
$ 29.75
11 x 9 mm (calibrated)
View Details
Add to Cart
0.56ct Natural Multicolor Sapphire, Trillion, VVS, Photo A
Sapphire Product Video (716803)

0.56ct Natural Multicolor Sapphire, Trillion, VVS

Sapphire

0.56ct1 pc
$ 80.64
5.4 x 5.1 mm
View Details
Add to Cart
4.01ct Natural Deep Golden Orange Citrine, Cushion, VVS-VS, Photo A

4.01ct Natural Deep Golden Orange Citrine, Cushion, VVS-VS

Citrine

4.01ct1 pc
$ 37.06
14.2 x 8.6 mm
View Details
Add to Cart
0.62ct Natural Medium Green Peridot, Marquise, VS, Photo A

0.62ct Natural Medium Green Peridot, Marquise, VS

Peridot

0.62ct1 pc
$ 11.16
8 x 4 mm (calibrated)
View Details
Add to Cart
2.10ctw Natural Light Bubblegum Pink Strawberry Quartz, Round, Transparent, Photo A

2.10ctw Natural Light Bubblegum Pink Strawberry Quartz, Round, Transparent

Strawberry Quartz

2.10ct total2 pcs
$ 38.81
7 mm (calibrated)
View Details
Add to Cart
0.88ctw Natural Medium Green Peridot, Pear Shape, VVS-VS, Photo A

0.88ctw Natural Medium Green Peridot, Pear Shape, VVS-VS

Peridot

0.88ct total2 pcs
$ 8.14
6 x 4 mm (calibrated)
View Details
Add to Cart
1.23ct Natural Medium Dark-Orange Hessonite Garnet, Oval, VS, Photo A

1.23ct Natural Medium Dark-Orange Hessonite Garnet, Oval, VS

Hessonite Garnet

1.23ct1 pc
$ 29.52
7.1 x 5.7 mm
View Details
Add to Cart
0.52ct Natural Medium Green Peridot, Marquise, VS, Photo A

0.52ct Natural Medium Green Peridot, Marquise, VS

Peridot

0.52ct1 pc
$ 9.36
8 x 4 mm (calibrated)
View Details
Add to Cart
0.44ct Natural Bright Gold Sapphire, Heart, VS, Photo A

0.44ct Natural Bright Gold Sapphire, Heart, VS

Sapphire

0.44ct1 pc
$ 32.74
4.5 x 4.4 mm
View Details
Add to Cart
2.51ct Natural White Cat's Eye Moonstone, Round, Translucent, Photo A

2.51ct Natural White Cat's Eye Moonstone, Round, Translucent

Cat's Eye Moonstone

2.51ct1 pc
$ 13.25
8 mm (calibrated)
View Details
Add to Cart
0.20ct Natural Deep Wine Red Ruby, Round, VS-SI, Photo A

0.20ct Natural Deep Wine Red Ruby, Round, VS-SI

Ruby

0.20ct1 pc
$ 79.46
3.5 mm (calibrated)
View Details
Add to Cart
1.58ct Natural Bright Green Sphene, Oval, Transparent, Photo A

1.58ct Natural Bright Green Sphene, Oval, Transparent

Sphene

1.58ct1 pc
$ 9.48
6.9 x 6.2 mm
View Details
Add to Cart
1.82ctw Natural Violet Blue Tanzanite, Pear Shape, VS, Photo A

1.82ctw Natural Violet Blue Tanzanite, Pear Shape, VS

Tanzanite

1.82ct total10 pcs
$ 84.08
5 x 3 mm (calibrated)
View Details
Add to Cart
2.68ct Natural Light Yellow Quartz, Oval, Transparent, Photo A

2.68ct Natural Light Yellow Quartz, Oval, Transparent

Quartz

2.68ct1 pc
$ 2.68
9.9 x 7.5 mm
View Details
Add to Cart
3.65ctw Natural Golden Citrine, Square, VS, Photo A

3.65ctw Natural Golden Citrine, Square, VS

Citrine

3.65ct total2 pcs
$ 30.54
7 x 7 mm (calibrated)
View Details
Add to Cart
3.52ct Natural Multicolor Agate, Oval, Translucent, Photo A

3.52ct Natural Multicolor Agate, Oval, Translucent

Agate

3.52ct1 pc
$ 8.45
8.4 x 8.2 mm
View Details
Add to Cart
4.85ctw Natural Light Lively Green Peridot, Round, VS, Photo A

4.85ctw Natural Light Lively Green Peridot, Round, VS

Peridot

4.85ct total5 pcs
$ 51.91
6 mm (calibrated)
View Details
Add to Cart
0.43ct Natural Multicolor Tourmaline, Baguette, Transparent, Photo A

0.43ct Natural Multicolor Tourmaline, Baguette, Transparent

Tourmaline

0.43ct1 pc
$ 15.48
6 x 4 mm (calibrated)
View Details
Add to Cart
9.19ct Natural Black Onyx, Pear Shape, Opaque, Photo A

9.19ct Natural Black Onyx, Pear Shape, Opaque

Onyx

9.19ct1 pc
$ 11.03
18 x 13 mm (calibrated)
View Details
Add to Cart
0.63ct Natural Deep Golden Orange Sapphire, Cushion, VVS, Photo A

0.63ct Natural Deep Golden Orange Sapphire, Cushion, VVS

Sapphire

0.63ct1 pc
$ 41.24
4.6 x 4.6 mm
View Details
Add to Cart
1.76ctw Natural White Zircon, Oval, VVS-VS, Photo A

1.76ctw Natural White Zircon, Oval, VVS-VS

Zircon

1.76ct total2 pcs
$ 12.92
6.1 x 4.2 mm
View Details
Add to Cart
0.22ct Natural Intense Azure Blue Apatite, Round, VS, Photo A

0.22ct Natural Intense Azure Blue Apatite, Round, VS

Apatite

0.22ct1 pc
$ 5.65
3.5 mm (calibrated)
View Details
Add to Cart
3.82ctw Natural Clear White Topaz, Square, VS, Photo A

3.82ctw Natural Clear White Topaz, Square, VS

Topaz

3.82ct total10 pcs
$ 32.09
4 x 4 mm (calibrated)
View Details
Add to Cart
0.73ct Natural Medium Green Peridot, Pear Shape, VVS-VS, Photo A

0.73ct Natural Medium Green Peridot, Pear Shape, VVS-VS

Peridot

0.73ct1 pc
$ 6.13
6.9 x 4.8 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

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 -> 10 star ratings

I've purchased from here many times over the last decade+. I find the information easy to understand, helpful, and interesting. I have always been satisfied that I got exactly what I ordered. Pictures and descriptions are clear and unique to each stone.

Posted By Maggie in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I am filling a small treasure chest and picked a nice amethyst.

Posted By VinnyD in August, 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

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 -> 9 star ratings

Been using them for years! Very satisfied with the products.

Posted By PI SC in May, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I think therea's no problem

Posted By Napoleon in August, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The checkout said the my ccv was invalid. i had to use another card.

Posted By Ron in April, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I love the gems!

Posted By MM in April, 2025
Source: Bizrate
Enlarged Gemstone Image