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gordonMax™ ~ A Smart Girl's Best Friend. ~ The Finest Diamond Simulants | Man-made Diamond, Diamond Simulant, Simulated Diamond, Laboratory Grown Diamonds |
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Selectdiamondjewelery.net - Home
Joomla - the dynamic portal engine and content management system, A mounting makes color grading a challenge because it interferes with a clear pavilion view, and the color of the metal can influence the diamond's apparent color. The lighting and background are the same for evaluating the color of a mounted diamond as they are for grading the color of a loose stone. Here's the procedure, Either estimate, or measure and calculate, the diameter and table size, just as you do for a loose stone. The face-up method is the best way to estimate the crown angles of rounds. With fancy cuts, try to get a clear profile view of at least some bezels, Modern technological developments make it possible to treat diamonds in a variety of ways. Treatments now exist that can induce color, lessen color, and improve apparent clarity. Advances in treatment technology increase the need for improved detection techniques and stricter disclosure guidelines, The first commercial use of irradiation to modify diamond color came in the mid-1900s with the introduction of the cyclotron, a giant device that accelerated electrons along a circular path. A diamond irradiated this way often had an even, medium-to-dark, vivid green, blue-green, or blue color, which hardly ever occurs in natural diamonds, Annealinga controlled heating and cooling processis another color modification method. It can follow irradiation in a two-step process that modifies irradiated color to produce brown, orange, or yellow. Pink, red, and purple shades are rare, but also possible, Most diamonds have inclusions. Some inclusions can be eliminated or placed in an inconspicuous position during cutting. Some are large and obvious enough to require more than that. The late 1900s brought many advances in diamond clarity treatments., Fracture filling, which began in the 1980s, is the most common diamond clarity treatment today. During fracture filling, a molten glass substance is infused into a diamond's fractures. The refractive index (RI) of the filler is close enough to the RI of diamond to make the fracture almost invisible, Diamond simulants are natural or manmade materials that look like diamonds and are used in their place. Most simulants are easy to detect if you know the properties of natural diamonds., Synthetic moissanite is doubly refractive, so in certain directions you can see double images of the pavilion's facet junctions.
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