Buy Square Shape 12x12 mm Gems

(11)

Gem Type

Color

Single

Pairs

Lots

Faceted

Cabochons

Sort By:

Clear All

Square Shape 12x12 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 Square shapes, facet cut and cabochon gems available now in 12 mm x 12 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 meant nor 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 around 0.3 mm or slightly higher even. This small variance can usually be accommodated for 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

They had a full selection of gems for me to choose from. Plus it was very east to order from them.

Posted By Easy in August, 2020

Source: Bizrate

Overall Rating -> 9

Good experience, easy to search by gem/style/size/color/cost. Good selection and trustworthy site.

Posted By Going to come back in August, 2020

Source: Bizrate

Overall Rating -> 10

I found exactly the gem I was look and the price was exactly in my budget.

Posted By The Vole in August, 2020

Source: Bizrate

Overall Rating -> 10

When I could not find a good matched pair, Customer Service (Thomas Dahlberg) responded with a selection of beautiful singles, which I also needed, and I found just the right stone for my ring. This means he actually read my email! So unusual these days. So very welcome.

Posted By Miramar in July, 2020

Source: Bizrate

Overall Rating -> 10

Excellent! I only shop with GemSelect. My wife thanks you!

Posted By LesterHammond in July, 2020

Source: Bizrate

Overall Rating -> 10

The sight has a great selection of stones at a variety of price points. It was easy for me to find affordable stones for gem identification practice as well as some fun pieces for my collection. Very happy with GemSelect!

Posted By Mary in July, 2020

Source: Bizrate

Gemstone Information

Find More Content Here

Popular Gemstones

Seller Trust

Selected Gemstones

Selected Shapes

Gemstones A-Z

Buy Square Shape 12x12 mm Gems

Square Pink Rose Quartz

Square Black Spinel

Square Green Malachite

Square Green Bloodstone

Square Pink Rose Quartz

Square Pink Rose Quartz

Square Green Bloodstone

Square Black Spinel

Square Pink Rose Quartz

Square Black Spinel

Square Pink Rose Quartz

Square Shape 12x12 mm Gems

Article Categories

Gemstone Information A-Z

Birthstones By Month

History of Gemstones

Healing Gemstones

Buying Gemstones

How-to Articles

Charts and Lists

Gems By Color

Did You Know?

Gem Info by Region

Technical Information on Gemstones

Gemstones By Date