Buy Marquise Shape 18x9 mm Gems(45) |
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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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Overall Rating -> 9 
No comment other than can you add more beads or drilled spheres to your inventory. Finding high quality beads on the internet is almost impossible. Buying from your site i fell confident what i am getting is real.
Overall Rating -> 9
The process was made very streamlined and the layout is very intuitive to navigate.
Overall Rating -> 10 
I have ordered many many gems over the years from them and I am always VERY happy!! And if I wasn't they do accept returns which is a great peace of mind.
Overall Rating -> 8 
I am always looking for good quality stones
Overall Rating -> 10
Found what I wanted right away and bought them.
Overall Rating -> 10
I had problems with PayPal. My customer service rep, Thomas, did a great job in shepherding me through the process. I ended up purchasing three stones, due to Thomas good customer service. Thomas deserves a raise and a week's vacation.
Overall Rating -> 10
I bought some opals and got a really good deal.
Overall Rating -> 10
gem selection is pretty great, prices are unbelievably low, however the cut of some gems is questionable at best. you have to dig for the good ones, but it’s worth it for the price
Overall Rating -> 10
I have been looking at the website for a few days, educating myself about Sapphires and other gems. I want to have earrings made as a gift for someone. I bought a air of gemstones for myself today. They look beautiful in the photo.
Overall Rating -> 7 
It would be nice if free shipping was offered for high dollar total orders, also the site could be easier to navigate if it was left to search all products at once instead of certain collections. Although very helpful adding a feature to make it easier to search all your inventory is better than hunting and weeding through multiple pages and links.
Overall Rating -> 9
The site it's self looks fairly plain and simple but the wide variety of stones with high quality photos and price ranges made finding a beautiful stone in my price range was extremely easy.
Overall Rating -> 10
Great products. I make custom jewelry and gemselect let’s me provide a variety of quality stones to my customers to choose from. Thank you.
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Size and Weight
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Gems are always measured in Millimeter (mm) Dimensions are given as; Select gems by size, not by weight! Note: 1ct = 0.2g  |
