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

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.

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Gemstone Information

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Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

Source: Bizrate

Overall Rating -> 10

Selection ability was straightforward and easy.

Posted By Dave in May, 2023

Source: Bizrate

Overall Rating -> 10

LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.

Posted By APPS in April, 2024

Source: Bizrate

Overall Rating -> 10

Easy to use,I have spent many hours looking at the site

Posted By Skip in November, 2023

Source: Bizrate

Overall Rating -> 10

GemSelect has the Best gems. Clear photos and detailed description helps me make the best choice. I have Never been disappointed by thier quality items.

Posted By Rock Hound in July, 2023

Source: Bizrate

Overall Rating -> 10

Best place to buy gem stones, dont bother shopping else where. Prices are great, no issues with shipping and customer service is the best.

Posted By J in December, 2023

Source: Bizrate

Overall Rating -> 10

Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.

Posted By David W in May, 2023

Source: Bizrate

Overall Rating -> 7

I placed order#384714 based on the picture on your website and the stone came in much darker. I'm sure it's the same stone i ordered but your lighting made it seem a lighter blue. I was trying to match a stone for a customer and based on the picture it would have been close enough but the stone in person is a mile off.

Posted By Bobk in February, 2024

Source: Bizrate

Overall Rating -> 9

Never bought anything on this website before, but it probably won't be my last purchase. Definitely one of the easiest to use and most informative sites I've ever been to.

Posted By Bob in November, 2023

Source: Bizrate

Overall Rating -> 10

Very easy. I have purchased a few times before and was satisfied each time. Thank you.

Posted By Ray in December, 2023

Source: Bizrate

Overall Rating -> 8

Found on a search engine. Scanned inventory and made a small purchase.

Posted By Ralli in August, 2023

Source: Bizrate

Overall Rating -> 10

I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.

Posted By Apps in November, 2023

Source: Bizrate

Overall Rating -> 10

I had a great time searching all the lovely stones. This is my first precious loose stone purchase for my own work. I chose sapphire, and found some lovely briolettes. I wanted 3, but this set of 4 was perfect. Everything was quick and easy, and I'm excited.

Posted By Phoenix in February, 2024

Source: Bizrate

Overall Rating -> 10

great. thank you

Posted By Carrotroller in July, 2023

Source: Bizrate

Overall Rating -> 9

It went well

Posted By Rob in December, 2023

Source: Bizrate

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Gemstones A-Z

Buy Octagon / Emerald Cut Gems

0.45 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gem, 6 x 4.1 mm

15.56 ct Trillion Tiger's Eye Matrix, 18.9 x 17.4 mm From Mexico

20.84 ct Oval Serpentine, 25 x 18.1 mm From the United States

19.78 ct Oval Star Ruby, 15.9 x 13.9 mm From Madagascar

4.82 carat White Topaz, Round loose Topaz from Brazil, Natural Untreated Gem, 9.9 mm

0.93 carat Orange Hessonite Garnet, Baguette Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 5.8 x 4.3 mm

1.12 carat Yellow Citrine, Pear Shape loose Citrine from Brazil, Natural Untreated Gems, 7.1 x 5 mm

6.06 ct Loose Princess Cut Sapphire, 2.6 x 2.5 mm From Tanzania

1.66 carat White Topaz, Emerald Cut loose Topaz from Brazil, Natural Untreated Gems, 5 x 4.9 mm

2.44 ct Oval Sillimanite Cat's Eye, 7.7 x 5.2 mm From Madagascar

3.49 ct White Moonstone, 11.1 x 8.9 mm Oval Cut From India

0.65 ct Oval Cut Peridot, 6.7 x 4.8 mm From China

42.03 ct Pencil Cut Strawberry Quartz, 37.5 x 12.2 mm From Russia

0.55 ct Loose Orange Sapphire, 5.9 x 4 mm Oval Cut From Tanzania

0.86 carat Pink Tourmaline, Oval loose from Mozambique, Natural Untreated Gem, 6.3 x 4.9 mm

1.27 ct Purple Spinel, 10.8 x 5.4 mm Marquise Cut From Tanzania

0.97 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 8.8 x 6.7 mm

51.17 ct Oval Tiger's Eye Matrix, 32.7 x 23.3 mm From Mexico

3.7 ct Loose Trillion Concave Cut Mystic Quartz, 8.1 x 8.1 mm From Brazil

13.24 ct Yellow Quartz, 16.1 x 16 mm Octagon Concave Cut From Brazil

0.18 carat Baguette Cut Emerald, loose Certified Emerald from Colombia, Natural Untreated Gem, 4.6 x 2.5 mm

6.14 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gems, 10.3 x 8 mm

21.91 carat Pear Coral, loose Certified Coral from Mexico, Natural Untreated Gem, 34.1 x 14.2 mm

1.65 carat Orange Hessonite Garnet, Oval loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 8.2 x 6.6 mm

5.19 ct Yellow Quartz, 13.2 x 10.2 mm Oval Diamond Cut From Brazil

5.28 ct Rainbow Pyrite, 14.4 x 9.6 mm From Russia

4.13 ct Oval Malachite, 10.2 x 8.1 mm From Congo

0.47 carat Purple Sapphire, Pear Shape loose Sapphire from Madagascar, Natural Gem, 6 x 4.8 mm

1.1 carat Green Tourmaline, Oval loose Tourmaline from Mozambique, Natural Untreated Gem, 8.2 x 6 mm

17.18 ct Druzy Variscite, 26.4 x 21.7 mm From Argentina

3.18 carat Trillion Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10 x 9.9 mm

0.5 carat Blue Sapphire, Round Cabochon loose Sapphire from Tanzania, Natural Gem, 4.3 mm

Gemstone Information

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