Loose Octagon Cut Gemstones for Sale - In Stock, ready to Ship

Octagon / Emerald Cut Gems

The octagon or emerald-cut is a shape that was developed to maximize the color of emerald gemstones. Therefore, if you are looking for a gem that shows pure, unadulterated color at its best, emerald cut gems are the right choice. The octagon-cut showcases the color of a gemstone.

Octagonal colored gemstones from GemSelect include large stones, matched pairs and lots. Among the choices are both precious and semi-precious octagonal gems, for example, bicolored ametrine, tourmaline, emerald, amethyst, smoky quartz, diamond, topaz, tanzanite and tsavorite garnet. There are emerald-cut gemstones of every color, size, shape and cutting style available. Some emerald-cut gems are square and others are long and rectangular.

To find the octagonal gemstones that you seek, filter the results further by using the left-hand menu. You can buy emerald-cut stones by gem type or color. By using the top menu, you can search by carat weight, size, price and other factors, to enable you to find the exact emerald-cut gems that you are looking for. All items are in stock and ready to be shipped.

Gemstone Information

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Overall Rating -> 10

Extremely easy to use, and I am fully satisfied with the purchase process.

Posted By Fl_Beachcomber in October, 2023

Source: Bizrate

Overall Rating -> 10

This is only the second time I have ordered from GemSelect. I am a prolific gemstone collector and I wish I had found this site sooner!

Posted By Beachcomber in September, 2023

Source: Bizrate

Overall Rating -> 8

1st time buy. The experience to date has been easy.

Posted By Q in December, 2022

Source: Bizrate

Overall Rating -> 10

The website is very easy to use. The search function, filter and sort functions are very helpful.

Posted By Sboro in August, 2023

Source: Bizrate

Overall Rating -> 10

I have used gm select a while ago and was always pleased with the products

Posted By Jaytee in November, 2023

Source: Bizrate

Overall Rating -> 10

It was easy to find the color gem I desired and checkout was simple as well. Very excited to receive my gemstone.

Posted By Nikki J in September, 2023

Source: Bizrate

Overall Rating -> 10

The website is user friendly, has excellent selection. I've always found what I was looking for with Gem Select. When others don't have it they do. And most important, they have a way for you to pay without using PayPal. I cannot use PayPal they closed my account because of no cell phone.

Posted By NJD in September, 2023

Source: Bizrate

Overall Rating -> 10

Very excited and impressed with all your products. Keep up the good work....more different stones to choose from. I like Cabachons.

Posted By Meow in June, 2023

Source: Bizrate

Overall Rating -> 10

Excellent experience!

Posted By Steph in April, 2023

Source: Bizrate

Overall Rating -> 10

all its ok

Posted By PETER in December, 2022

Source: Bizrate

Overall Rating -> 10

I am not well versed in using the internet but, I found the website friendly and easy to use.

Posted By Jbird in March, 2023

Source: Bizrate

Overall Rating -> 10

The gems were as described, which is kind of rare these days. I am happy with the purchase, and delevery on time.

Posted By T-bone in October, 2023

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

great products - found just some trying time to narrow in on the exact size - price combination. Also wasnt real clear wher they were shipping from until they got here..and then just breathtaking stones, well documented stats, in ,my hand...thank you! Diane Davis

Posted By Ddavis2 in March, 2023

Source: Bizrate

Overall Rating -> 10

You were the only site that had the color gems with oval cut in sizes 6mm to 4mm that I could find and it was very easy to find them with your search tool!

Posted By Streetdonuts in February, 2023

Source: Bizrate

Selected Gemstones

Gemstones A-Z

Buy Octagon / Emerald Cut Gems

2.53 ct Loose Pink Tourmaline, 8 x 6.3 mm Octagon Cut From Tanzania

2.96 ct Octagon Cut Emerald, 9.3 x 8.5 mm From Colombia

13.59 ct Octagon Concave Cut Smoky Quartz, 16.2 x 16.1 mm From Brazil

6.71 ct Octagon Cut Color-Change Diaspore, 22.7 x 7.5 mm From Turkey

0.88 ct Octagon Cut Kornerupine, 7.3 x 4.9 mm From Sri Lanka

32.86 ct Octagon / Emerald Cut Lapis Lazuli, 25.1 x 15.1 mm From Afghanistan

15.19 ct Yellow Citrine, 17.9 x 12.9 mm Octagon Cut From Brazil

0.46 ct Octagon Cut Emerald, 4.3 x 4.2 mm From Colombia

6.64 ct Green Apatite, 11 x 10.9 mm Asscher Cut From Madagascar

5 ct Orange Hessonite Garnet, 6.8 x 5 mm Octagon Cut From Sri Lanka

3.02 ct Loose Pink Tourmaline, 8.2 x 7.2 mm Octagon Cut From Tanzania

9.97 ct Asscher Cut Smoky Quartz, 12.7 x 12.7 mm From Brazil

13.29 ct Yellow Quartz, 16 x 15.9 mm Octagon Concave Cut From Brazil

13.08 ct Octagon Concave Cut Smoky Quartz, 16.1 x 16 mm From Brazil

11.28 ct Octagon Cut Smoky Quartz, 13.6 x 13.6 mm From Brazil

18.31 ct Yellow Quartz, 18.2 x 18.1 mm Octagon Concave Cut From Brazil

8.2 ct Asscher Cut Rose Quartz, 12.5 x 12.3 mm From South Africa

6.48 ct Bi-color Ametrine, 10.7 x 10.7 mm Octagon Cut From Brazil

0.5 ct Octagon Cut Emerald, 5.1 x 4 mm From Colombia

15.68 ct Octagon Cut Nuummite, 14.8 x 14.3 mm From India

14.8 ct Yellow Quartz, 15.2 x 14.8 mm Asscher Cut From Brazil

19.09 ct Yellow Quartz, 15.3 x 15.3 mm Asscher Cut From Brazil

14.67 ct Asscher Cut Rose Quartz, 15.2 x 15.1 mm From South Africa

10.83 ct White Quartz, 13.5 x 13.5 mm Asscher Cut From Brazil

13.92 ct Yellow Apatite, 13.2 x 15.6 mm Octagon Cut From Madagascar

40.56 ct Blue Aquamarine, 22 x 17.5 mm Octagon Cut From Mozambique

12.31 ct Yellow Quartz, 15.7 x 15.8 mm Octagon Concave Cut From Brazil

12.5 ct Octagon Cut Smoky Quartz, 13.8 x 13.8 mm From Brazil

4.78 ct Green Apatite, 10.1 x 9.9 mm Asscher Cut From Madagascar

4.74 ct Loose Pink Tourmaline, 12.3 x 8.1 mm Octagon Cut From Mozambique

13 ct Yellow Quartz, 16 x 15.9 mm Octagon Concave Cut From Brazil

2.19 ct Loose Pink Tourmaline, 8.1 x 6 mm Octagon Cut From Tanzania

Octagon / Emerald Cut Gems

Gemstone Information