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Marquise Shape 18x9 mm Gems Single |
Marquise Shape 18x9 mm Gems Pairs |
Marquise Shape 18x9 mm Gems Lots |
Marquise Shape 18x9 mm Gems Faceted |
Marquise Shape 18x9 mm Gems Cabochons |
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 marquise shaped facet cut gems, gemstone carvings and cabochons available in 18 mm x 9 mm sizes. For the largest selection of colored gemstones, Shop GemSelect Online.
As a general guideline, when it comes to calibrated gems, they are not usually expected to be cut to exact measurements and specifications. But rather, they're cut with slight variance in size, though the close approximatation in size is not clearly defined, there are general guidelines for what is considered acceptable. Obviously larger and heavy carat weight stones allow more room in size for variance, while smaller stones may leave little to none. This means a large 30mm calibrated gemstone, could actually be closer to 31 millimeters. For this reason, we recommend to always view the exact size in addition to the calibrated size details. The exact size will inform you of the variance you can expect. Some setting styles are more flexible with variance, such as prong settings, while other styles of mountings may need almost an exact size to the fraction of millimeter.
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.
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Thank you for trusting us with your purchase!
Overall Rating -> 10 
Everthing about researching and ordering from Gemselect was easy and uncomplicated. In the past I had payment problems, but your customer rep, Thomas, helped me get everything right. I will continue using Gemselet in the future for these reasons.
Overall Rating -> 10
Easy to use as always and in all steps from opening site to paying.
Overall Rating -> 9 
It was simple and clear to understand.
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.
Overall Rating -> 10
LOVE YOU GUYS. YOU CARRY EVERY GEMSTON I WANT. THE PRICE IS GREAT,THE PRODUCT IS OUTSTANDING,AND THE SERVICE CANT BE BEET.
Overall Rating -> 10
I have had and will always have a great time shopping at GemSelect. It's a great web site with great products and great service.
Overall Rating -> 10
Very good customer service. I had an issue on my end with shipping and I received a response the next day!
Overall Rating -> 10
Purchasing from Gem Select was a pleasant and easy experience. The photos of the stones I was interested in were an accurate depiction of the stones I received. Ordering was easy and the items arrived within a week. Over all it was a very positive experience.
Overall Rating -> 8 
I did not realize how small the stone was. I cannot use it for the project I wanted, but I am keeping the stone and tru to use it in something else.
Overall Rating -> 10
Always an easy experience using Gem select.
Overall Rating -> 8
Found on a search engine. Scanned inventory and made a small purchase.
Overall Rating -> 9
GemSelect has a fantastic assortment of Semi-precious stones. I have not found any other web site with the variety you have.
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