Buy Marquise Shape 18x9 mm Gems(44) |
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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 -> 10 
You were the only site that had the color gems with oval cut in sizes 6mm to 4mm that I could find and it was very easy to find them with your search tool!
Overall Rating -> 9 
Luke got some gems for some jewelry prices i plane to make, I loved the quality the blue Laramar did look a little different in the lighting but overall good
Overall Rating -> 10
I'd like to recommend GemSelect, great items, quality, customer service & fast deliveries.
Overall Rating -> 10
I have been shopping with Jim select for quite a few years. The descriptions of the gyms are accurate and the selection is very broad. Anyone looking for loose gyms, this is the place to go. Check out is easy.Pricing is very reasonable.
Overall Rating -> 8 
purchased birthstones to be mounted into stud earrings as a gift for a friend's gift
Overall Rating -> 10
Beautiful selection of gems! Surprised and happy that I was able find a gem in my price range.
Overall Rating -> 10
what i like is the variety, the search options. Would like a few more pictures though of each gem
Overall Rating -> 10
Fantastic dealer for quality gemstones. Website is easy to navigate, selection is superb, delivery of purchases is prompt. Easy to select incorrect payment options, however.
Overall Rating -> 9
Would love to be able to purchase mixed gem lots.
Overall Rating -> 10
i made an order in 2007 and was very pleased; it made into a lovely ring. i found a large citrine locally, and now needed some accent stones.
Overall Rating -> 10
great products - found just some trying time to narrow in on the exact size - price combination. Also wasnt real clear wher they were shipping from until they got here..and then just breathtaking stones, well documented stats, in ,my hand...thank you! Diane Davis
Overall Rating -> 9
I like the search ability. I was looking for a gemstone of particular size and color to place in a ring that I already have. Your company carries a large variety of beautiful stones.
Overall Rating -> 10
Good selection. I'm always looking around on this site.
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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  |
