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 -> 10

Very detailed and great pictures

Posted By Alexandrite in November, 2023

Source: Bizrate

Overall Rating -> 10

this was very easy im exited to get my order

Posted By Mr. in April, 2024

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Overall Rating -> 9

Well presented images, clear information, quick and easy check out.

Posted By Mr. Bezel in July, 2023

Source: Bizrate

Overall Rating -> 10

Very large selection of items and we used the stones to have several pieces of jewelry made for us.

Posted By Joe in January, 2024

Source: Bizrate

Overall Rating -> 9

I have been buy from you for years

Posted By JohnA in May, 2023

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Overall Rating -> 10

Trustworthy site. I've had several good experiences with company. Products always have met my expectations. Thank you.

Posted By Ray in February, 2024

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Overall Rating -> 10

The website is easy to navigate and the images are incredible.

Posted By Lindsy in October, 2023

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Overall Rating -> 7

I feel pretty good so far, pending the delivery of the item ordered.

Posted By Steve in November, 2023

Source: Bizrate

Overall Rating -> 10

I have used this site for sseveral years now. All has been great. I started collection gems from GemSelect for years and wanted to collect at least one of most stones. I loved Safers because the mols is a 9 + and they come in every color. This is the best place to buy gems for the assortment and price. Great place to learn about gems too. Sometimes the shipping is a little on the long side. But I would give them a 9.9 out of 10 !!

Posted By Steve in July, 2023

Source: Bizrate

Overall Rating -> 10

I was looking for a source for affordable genuine gemstones for my grandson who is currently very interested in rocks and gems. I was quite surprised and pleased to find GemSelect and finding the right stones at the right price couldn't have been simpler.

Posted By Papa in December, 2023

Source: Bizrate

Overall Rating -> 10

Very good, very fast, everything as described.

Posted By B in October, 2023

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Overall Rating -> 10

I have used Gem Select many times over the past 10 years and have always been happy with the product & services

Posted By Ordain in August, 2023

Source: Bizrate

Overall Rating -> 10

I love the clear description of the certification options. It's very rare to see a gem site that offers a deep explanation of each institution that would certify the stone(s).

Posted By Oakcityceo in May, 2023

Source: Bizrate

Overall Rating -> 8

Very easy to find the specific stone I was looking for. I am pleased by both the selection and the price of the stones that are available. The only "bad" thing that I have to say is that the interface of the site is outdated.

Posted By Nick in March, 2024

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

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Gemstones A-Z

Buy Octagon / Emerald Cut Gems

5 ct Loose Oval Lapis Lazuli, 13.1 x 9 mm From Afghanistan

1.87 carat Oval Opal, loose Certified Opal from Ethiopia, Natural Untreated Gem, 11.6 x 8.3 mm

7.43 ct Oval Boulder Opal, 23.9 x 8 mm From Australia

10.15 ct Fancy Fire Agate, 23.3 x 9.2 mm From Mexico

5 carat Sky Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 9.1 x 7.1 mm

1.79 carat Pear Shape Tsavorite Garnet, loose Certified Tsavorite Garnet from Tanzania, Natural Untreated Gems, 5 x 3 mm

1.79 carat Heart Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6.1 x 6.1 mm

1.49 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 7 x 5.1 mm

5.91 ct White Moonstone, 9.1 mm Round Cut From India

23.77 ct Cushion Lapis Lazuli, 19.9 x 15.1 mm From Afghanistan

89.56 ct Yellow Quartz, 36 x 22.7 mm Oval Portuguese Cut From Brazil

5.45 ct Trillion Cut Idocrase, 11.2 x 11 mm From the United States

1.86 ct Yellow Sphene, 6.9 x 6.7 mm Oval Cut From Sri Lanka

4.11 ct Yellow Quartz, 12.1 x 12 mm Trillion Concave Cut From Brazil

1.5 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Sri Lanka, Natural Untreated Gem, 7.5 x 5.5 mm

15.06 ct Oval Larimar, 28.5 x 16.6 mm From the Dominican Republic

11.7 ct Oval Maw-Sit-Sit, 16 x 11.6 mm From Myanmar

9.99 ct Carved Prehnite, 13.7 x 12.1 mm From South Africa

1.27 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 9.4 x 7.4 mm

4.01 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 6.1 x 4.1 mm

21.12 ct Green Jadeite, 23.8 x 17.4 mm Oval Cut From Myanmar

1.67 ct Oval Cut Peridot, 7.1 x 5.1 mm From China

9.71 ct Oval Pietersite, 20.2 x 10.9 mm From Namibia

1.01 carat Pink Morganite, Pear Shape loose Morganite from Afghanistan, Natural Untreated Gem, 10.5 x 5.1 mm

5.64 ct Fancy Fire Agate, 12.3 x 9.8 mm From Mexico

1.88 ct Round Cut Strawberry Quartz, 8.1 mm From Russia

1.17 carat Orange Hessonite Garnet, Emerald Cut loose Hessonite Garnet from Madagascar, Natural Untreated Gem, 6.7 x 4.7 mm

3.49 carat White Topaz, Round loose Topaz from Brazil, Natural Untreated Gem, 8.6 mm

7.46 carat Pear Shape Emerald, loose Certified Emerald from Colombia, Natural Gem, 18.3 x 10.6 mm

1.33 ct Purple Spinel, 6.8 x 6.3 mm Cushion Cut From Tanzania

2.71 ct Yellow Andesine Labradorite, 11.1 x 7.1 mm Oval Cut From Congo

2.84 ct Loose Princess Cut Sapphire, 2.6 x 2.6 mm From Tanzania

Gemstone Information

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