Calibrated 12 mm Round Shape Loose Natural Gemstones from GemSelect

Shop By

Single

Pairs

Lots

Faceted

Cab

Gemtype

Color

You Selected (573): Round Shape 12 mm Gems Clear All

Sort By:

Round Shape 12 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 Round shapes, facet cut and cabochon gems available now in 12 mm diameter 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 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

I have been using GemSelect for at lest five years and I have no complaints!

Posted By in October, 2018

Source: Bizrate

Overall Rating -> 10

This site always has beautiful stones to choose from and you will get the actual gem that is pictured. The shipping is fast and reasonably priced.

Posted By CAC in October, 2018

Source: Bizrate

Overall Rating -> 10

I have not gotten my gems, but when i do i will be very happy, yet i did not like you had to pay $15 extra for faster shipping

Posted By Jack in October, 2018

Source: Bizrate

Overall Rating -> 10

I love GemSelect, personally. I browse their site almost daily to see all the new stones available. Their selection is pretty amazing. The quality isn't always the highest and the cut of the stones isn't always perfect. But for the price, and if you look hard enough, you can find a real gem, so to speak.

Posted By Patrick in September, 2018

Source: Bizrate

Overall Rating -> 10

I would recommend to a friend because of the quality of the products purchased. The gemstone quality is very high and the gems purchased are beautiful. Any friends interested in having custom jewelry made would definitely be recommended to the site. Also, every shipment is handled with care and I am very pleased with that.

Posted By Isaiah in September, 2018

Source: Bizrate

Overall Rating -> 9

Gem Select has an excellent selection of gemstones, including some rare ones. Prices are as expected.

Posted By Mike in September, 2018

Source: Bizrate

Gemstone Information

Popular Gemstones

	Email this Page to a Friend
	Sign up for our Newsletter

Seller Trust

English speaking customer support only
Toll Free - USA & Canada only: 1-800-464-1640 International: +66-39303404

GemSelect's Telephone numbers
Save Money - No shipping Fees for Additional Items! $6.99 Worldwide Shipping