Calibrated 5 x 3 mm Octagon Shape Natural Gemstones: GemSelect

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Octagon Shape 5x3 mm Gems
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 5 x 3 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.

Certified Customer Reviews

Overall Rating -> 10

First, I wanted to say that you guys have a great selection gems, in all price ranges! Awesome site!! My son found a 6 piece set of blue topaz hearts that he wanted to get. I wanted to view all of the 6 piece sets or 10 piece sets. I recommend adding that ability to your filter.

Posted By Mike in February, 2020

Source: Bizrate

Overall Rating -> 10

Everything came in as expected. This was a great experience and I will order from here again.

Posted By Sam in February, 2020

Source: Bizrate

Overall Rating -> 10

It was great! They have a great selection of products for great prices. I found even more than I could've possibly wanted.

Posted By AveryN in February, 2020

Source: Bizrate

Overall Rating -> 10

I have been ordering from GemSelect for almost a decade and every single item I have ever ordered arrived in perfect condition - and each of them was exactly as advertised! I have told my friends and encouraged them to shop there also. It is a pleasure to shop this site!

Posted By Jim in February, 2020

Source: Bizrate

Overall Rating -> 10

This website is extremely easy to navigate and understand and not bogged down by unnecessary flourishes and programming. Best part is the real pictures of each gem. I love it

Posted By R dawg in February, 2020

Source: Bizrate

Overall Rating -> 8

GemSelect is a really great vendor, the site is a little dated but it is very easy to navigate and find exactly what you're looking for! Their prices are very competitive and they have a great selection. Looking forward to receiving my pieces!

Posted By Jair in February, 2020

Source: Bizrate

Gemstone Information

Popular Gemstones

Seller Trust

Buy Octagon Shape 5x3 mm Gems

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Violet Iolite

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Multicolor Sapphire

Octagon / Emerald Cut Purple Sapphire

Octagon / Emerald Cut Orange Sapphire

Octagon / Emerald Cut Purple Sapphire

1 pc (avg. 0.30 ct) Green Peridot