Buy Calibrated 6x4mm Octagon Shape Natural Gems at GemSelect

GemSelect’s octagon (Emerald) shape 6x4mm gems are the ideal size for earrings, bracelets, and rings. Our calibrated gems are the perfect solution for new designs and repairs to existing pieces. The specifications of our stones ensure our stones to be within 0.24mm of the specified size making it easy to replace lost or damaged stones for cherished pieces. Our octagon-shaped gemstones are available in single units, pairs, lots, and multi-colored lots to assist you in selection.

A pair of earrings or a ring including GemSlect's 6x4mm octagon shaped gemstones can make an excellent anniversary gift for a cherished partner. We find the octagon or emerald cut to be ideal for a ring or earrings featured gem as it embodies the traditional design for a stone. The style of this gem gives the jewelry a classic feel that's always fashionable to wear. Our 6x4mm octagon stones arrange well when placed horizontally into a bracelet. Though they are seen most commonly in symmetrical arrangements, they can also appear in asymmetrical designs if set correctly.

6x4mm octagon-cut precious and semi-precious gemstones are available through GemSelect at wholesale prices. For additional information about each gemstone click the specific stone or stones of your choice. In this section, you will find detail including the weight of the gem, color, origin, treatment, cut, and all other applicable information.

Read All

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

The gem stone always has a great selection of beautiful stones. The calibrated stone fit my ring perfectly. Thank you gem select !

Posted By Jen in August, 2023

Source: Bizrate

Overall Rating -> 9

Good interaction with site

Posted By Brick in September, 2023

Source: Bizrate

Overall Rating -> 10

Gem Select has gems at afffordable prices.

Posted By George in March, 2024

Source: Bizrate

Overall Rating -> 9

An it was good.

Posted By Miguel in June, 2023

Source: Bizrate

Overall Rating -> 10

i love this site, the gems are always of good quality, i've been buy gifts from the site for 10 years, love it

Posted By Jf in January, 2024

Source: Bizrate

Overall Rating -> 10

Very detailed and great pictures

Posted By Alexandrite in November, 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

My first order. I am anxious to see if what I ordered is what I receive.

Posted By KRJ in July, 2023

Source: Bizrate

Overall Rating -> 10

Very good, very fast, everything as described.

Posted By B in October, 2023

Source: Bizrate

Overall Rating -> 10

I have used GemSelect for several years and plan to shop more in the further. This is a good source of information on gemstones. I love looking at and learning about them. Lot more than I ever knew existed.

Posted By Bikerwalrus in October, 2023

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 -> 9

Not easy enough to buy by exact size, and many stones aren't carbechon curved shape on top

Posted By Erick in July, 2023

Source: Bizrate

Overall Rating -> 10

The website was very easy to navigate. We appreciated the details about each gem, and the sort and search features of the website were helpful and easy to use.

Posted By AV in May, 2023

Source: Bizrate

Overall Rating -> 10

I really enjoy browsing through GemSelect. The selection is always marvelous and I love how detailed everything is described. The only thing I noticed is that when browsing through my phone, the videos of the gems do not load. If there were more videos of the gems, that would be amazing, though I understand that is a lot of work on GemSelect's part! Checking out is also very fast and easy, and I love that the return policy is very good, though I hope I don't have to use it anytime soon.

Posted By ChiChi in January, 2024

Source: Bizrate

Overall Rating -> 10

I purchase all of my stones from GemSelect! They're the best I've found for both selection and value.

Posted By Terry in June, 2023

Source: Bizrate

Gemstones A-Z

Buy Octagon Shape 6x4 mm Gems

1.76 carat Oval Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 6.9 x 5 mm

56.57 ct Marquise Fossil Coral, 66.4 x 24.2 mm From Indonesia

3 ct Loose Trillion Cut Amethyst, 10.1 x 10 mm From Brazil

19.73 ct Carved Ruby-Zoisite, 18.7 x 18.1 mm From Tanzania

1.92 carat Green Tourmaline, Emerald Cut loose Tourmaline from Mozambique, Natural Untreated Gem, 24.1 x 3 mm

18.08 ct Pink Kunzite, 18.4 x 11.1 mm Cushion Cut From Afghanistan

0.88 carat Pear Shape Peridot, loose Certified Peridot from China, Natural Untreated Gems, 6.2 x 4.2 mm

19.75 ct Carved Prehnite, 16.2 x 10.2 mm From South Africa

0.2 ct Square Cut Kornerupine, 3.3 x 3.2 mm From Sri Lanka

0.95 carat Pear Shape Color-Change Diaspore, loose Certified Color-Change Diaspore from Turkey, Natural Untreated Gem, 10.3 x 4.3 mm

6.88 carat Carved Heart Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 13.8 x 11.7 mm

0.78 ct Yellow Beryl, 7.5 x 5.3 mm Oval Cut From Madagascar

3.22 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gem, 8.9 x 7.1 mm

2.87 ct Square Cut Rainbow Moonstone, 3.1 x 3.1 mm From India

9.81 ct Fancy Rutile Quartz, 18.4 x 9.1 mm From India

0.59 carat London Blue Topaz, Oval loose Topaz from Brazil, Natural Gems, 5.1 x 3.2 mm

4.27 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 10.8 x 8.9 mm

12.44 ct Yellow Quartz, 16.2 mm Round Concave Cut From Brazil

15.21 ct Oval Serpentine, 25.2 x 17.6 mm From the United States

2.3 carat White Zircon, Oval loose Zircon from Cambodia, Natural Gems, 7 x 5 mm

3.43 carat Yellow Citrine, Square loose Citrine from Brazil, Natural Untreated Gem, 8.7 x 8.6 mm

0.86 ct Loose Purple Sapphire, 6.5 x 4.8 mm Oval Cut From Madagascar

3.79 ct Round Checkerboard Smoky Quartz, 7.8 mm From Brazil

0.97 carat Oval Emerald, loose Certified Emerald from Colombia, Natural Gems, 5.9 x 5 mm

18.06 ct Oval Hematite, 18.1 x 9 mm From Brazil

4.81 carat Sky Blue Topaz, Round loose Topaz from Brazil, Natural Gems, 8.2 mm

3.42 ct Oval Tiger's Eye, 8.9 x 6.9 mm From Thailand

4.51 ct Round Cut Peridot, 5.9 mm From China

32.53 ct Green Jadeite, 43.2 x 15.9 mm Carved From Myanmar

11.97 carat Oval Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gems, 13.9 x 9.9 mm

2.89 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 7.1 x 7.1 mm

5.74 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 14 x 11.5 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT