Calibrated 9 x 7 mm Octagon / Emerald-Cut Natural Gemstones: GemSelect

Some people by gems by color or price, but for many, it is best to buy gems by shape and size - especially if you're in need of a gem to replace a previous item that was lost or damaged. Calibrated Octagon shape / Emerald-Cut, faceted and cabochon gems available now in 9 x 7 mm size range. Shop a wide range of calibrated gemstones by size online at wholesale from GemSelect.

As a general guideline, when it comes to 'calibrated' gems, they are not usually expected to be cut to exact measurements. For calibrated gemstones weighing under one carat, most jewelry settings will accommodate a gem which is within 0.2 mm of the calibrated size in order to fit a standard setting. For gemstones that weigh over one carat, a larger variance is acceptable, often round shape settings will allow 0.3 mm or slightly higher even. This small variance can usually be accommodated for most standard style settings. Round-cut gemstones should also have a greater variance in acceptable size when it comes to calibration; in fact it is usually possible to mount a round stone of any size in the closest standard setting.

Read All

Gemstone Information

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 10

No issues at all. It was great.

Posted By LJXK in May, 2023

Source: Bizrate

Overall Rating -> 10

first time here sooooooooooo we will seeeee!!!!! so far so good!!!!!!

Posted By Seastone 56 in October, 2023

Source: Bizrate

Overall Rating -> 10

Perfect size I was looking for and great price

Posted By Izzy in September, 2023

Source: Bizrate

Overall Rating -> 10

this was very easy im exited to get my order

Posted By Mr. in April, 2024

Source: Bizrate

Overall Rating -> 10

Wonderful selection of gems to choose from. Have made many purchases and was only slightly disappointed once.

Posted By Teemo 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

My last experience was good, in fact every experience I have had with them has met my expectations or surpassed them. These are really good people to work with.

Posted By Spinach in May, 2023

Source: Bizrate

Overall Rating -> 10

I love your selection of gems. My only complaing is I wish I could put in a page number to return to that page.When there are over 60 pages of gems it is hard to return to a page with a gem I am considering.

Posted By Cahall in March, 2024

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 -> 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

Awesome

Posted By Mic in May, 2023

Source: Bizrate

Overall Rating -> 9

It was simple and clear to understand.

Posted By Thora007 in December, 2023

Source: Bizrate

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

Website was incredibly easy and fast to use. Navigation and product outlay was simple and enjoyable to browse. Thank you and have a blessed day!

Posted By Devi in October, 2023

Source: Bizrate

Overall Rating -> 9

over the experience was similar to other sites i have used. The only real note I have is the checkout experience was tedious and discriminatory, i wouldn't accept visa gift cards, which not only have guaranteed funds but help protect from misuse of personal information, but would not accept my visa b/c it is a prepaid card. I don't have bank account and I have been using the prepaid card for years without issue so this was disappointing to me. I feel safer using reputable gem sites rather than amazon or ebay (I have been sold fake gems with fake certs on both), but not being able to use my own valid legitimate funds and having to find a friend to buy for me b/c I use a non-bank card like 40% of the country is insulting.

Posted By Iggywiggly in January, 2024

Source: Bizrate

Gemstones A-Z

Buy Octagon Shape 9x7 mm Gems

4.55 carat Pear Shape Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 7 x 5.1 mm

1.86 carat Sky Blue Topaz, Trillion loose Topaz from Brazil, Natural Gems, 4.2 x 4.1 mm

2 carat Blue Tanzanite, Pear Shape loose Tanzanite from Tanzania, Natural Gems, 4.8 x 3.1 mm

6.21 carat Carved Leaf Ruby, loose Certified Ruby from Madagascar, Natural Gems, 12.2 x 7.3 mm

1.34 carat White Topaz, Oval loose Topaz from Brazil, Natural Untreated Gems, 6.2 x 4.2 mm

32.32 ct Oval Jasper, 32 x 20.7 mm From Indonesia

5.7 carat Blue Tanzanite, Oval loose Tanzanite from Tanzania, Natural Gems, 9.9 x 7.9 mm

2.47 carat Blue Zircon, Diamond-Cut loose Zircon from Cambodia, Natural Gems, 4.4 mm

21.6 ct Oval Fossil Coral, 18 x 12.3 mm From Indonesia

1.65 ct Oval Sillimanite Cat's Eye, 7.9 x 5.2 mm From Madagascar

1.22 ct Oval Chocolate Opal, 8.9 x 7 mm From Ethiopia

4.71 ct Cushion Onyx, 11 x 11 mm From Sri Lanka

3.03 carat Emerald Cut Pyrope Garnet, loose Certified Pyrope Garnet from Mozambique, Natural Untreated Gems, 5.7 x 3.8 mm

9.19 ct Oval Agate, 14 x 12 mm From Indonesia

2.19 ct Yellow Quartz, 13 x 7.8 mm Marquise Concave Cut From Brazil

31.86 ct Pencil Cut Jasper, 36.4 x 10.9 mm From Indonesia

14.76 ct Yellow Apatite, 16.5 x 13.5 mm Oval Cut From Madagascar

1 ct Oval Sillimanite Cat's Eye, 5.9 x 4.4 mm From Madagascar

14.31 ct Fancy Pietersite, 25.5 x 10.1 mm From China

3.09 carat Orange Hessonite Garnet, Cushion loose Hessonite Garnet from Sri Lanka, Natural Untreated Gems, 6.1 x 6.1 mm

7.82 ct Yellow Quartz, 14.9 x 12.9 mm Hexagon Cut From Brazil

11.3 carat Trillion Ammolite, loose Certified Ammolite from Canada, Natural Gem, 19.5 x 17.2 mm

0.69 ct Octagon Cut Color-Change Diaspore, 5.4 x 5.3 mm From Brazil

1.09 ct Oval Black Opal, 9.1 x 7.1 mm From Ethiopia

17.52 ct Oval Jasper, 25.2 x 17.7 mm From Indonesia

1.92 carat Orange Zircon, Oval loose Zircon from Tanzania, Natural Untreated Gem, 8.1 x 6.2 mm

5.26 carat Marquise Cut Amethyst, loose Certified Amethyst from Brazil, Natural Untreated Gem, 18 x 9.4 mm

0.88 ct Yellow Sphalerite, 5.4 mm Round Cut From Spain

4.29 ct Oval Spectrolite, 10.2 x 8.2 mm From Finland

22.52 carat Green Opal, Oval loose Opal from Brazil, Natural Untreated Gem, 26.4 x 17.4 mm

49.99 ct Yellow Quartz, 23.3 x 19.7 mm Oval Portuguese Cut From Brazil

5.62 carat Oval Opal, loose Certified Opal from Australia, Natural Untreated Gem, 15.7 x 11.5 mm

Gemstone Information

Gemstone SHOP

POLICIES

WHO ARE WE?

Gemstone EDUCATION

WE ARE LOCATED AT