Calibrated 18 x 13 mm Octagon Shape Natural Gemstones: GemSelect

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Calibrated Gemstones
Octagon Shape 18x13 mm Gems

Octagon / Emerald Cut (3)

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Octagon Shape 18x13 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 18 x 13 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

offer military prices

Posted By Frobb1968 in August, 2018

Source: Bizrate

Overall Rating -> 10

Trustworthy company & site, great products.

Posted By KM in August, 2018

Source: Bizrate

Overall Rating -> 10

I have been ordering from GemSelect for at least 6 years. Every single order was perfect - every item was as advertized, in perfect condition and arrived well within the specified time frame. I have recommended them to several friends.

Posted By Jim in August, 2018

Source: Bizrate

Overall Rating -> 10

Excellent company with excellent website!

Posted By Marcy in August, 2018

Source: Bizrate

Overall Rating -> 10

Happy with price and ease of purchase. Will tell others

Posted By JJ Kool Juan in August, 2018

Source: Bizrate

Overall Rating -> 10

Very pleased with my purchase in all aspects!!!!!