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#1
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synthetic gems
I was reading online this afternoon about synthetic diamonds, and how there
are "products" like those from Gemesis and/or Apollo, that are really lab created diamonds with all the characteristics (optical, physical and chemical) of the natural stones. But my question would regard other gemstone varieties, and their "lab growing". I saw many sites selling synthetic sapphires, rubies, alexandrites, topaz... Are they also completely the same as natural ones, or they're produced diferently, so they aren't actually identical to the natural stones, if we exclude the optical factor? Thanks! P. S. This goes especially for blue topaz since I read that it's done from spinel, but don't know anything about sapphires. |
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#2
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"m4816k" schreef in bericht ... I was reading online this afternoon about synthetic diamonds, and how there are "products" like those from Gemesis and/or Apollo, that are really lab created diamonds with all the characteristics (optical, physical and chemical) of the natural stones. But my question would regard other gemstone varieties, and their "lab growing". I saw many sites selling synthetic sapphires, rubies, alexandrites, topaz... Are they also completely the same as natural ones, or they're produced diferently, so they aren't actually identical to the natural stones, if we exclude the optical factor? Thanks! P. S. This goes especially for blue topaz since I read that it's done from spinel, but don't know anything about sapphires. Lab growing and synthetic would suggest that they have all the characteristics of the natural stone. But some sellers use these terms for stones that should be termed "imitation". e.g. go to the following link: http://www.thaigem.com/lab_shop.asp Click on the picture of the "synthetic" alexandrite, Click on one of the calibrated forms e.g. round Click on Full Details Aha, their "synthetic" alexandrite is really a colorchange synthetic korund! Same for aquamarine and topaz; these are merely synthetic spinel. Groeten, Jaap |
#3
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and how there
are "products" like those from Gemesis and/or Apollo, that are really lab created diamonds with all the characteristics (optical, physical and chemical) of the natural stones. But my question would regard other gemstone varieties, and their "lab growing". I saw many sites selling synthetic sapphires, rubies, alexandrites, topaz... Are they also completely the same as natural ones, or they're produced diferently, so they aren't actually identical to the natural stones, if we exclude the optical factor? Thanks! Lab growing generally causes different type inclusions than you get with stones grown in nature. |
#4
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There are different processes for creating synthetic rubies, emeralds and
sapphires. Hydorthermal (heat and pressure in an autoclave environment), flux-fusion where you dissolve and recrystallize the materials. These are synthetic processes and not imitation since they have the same chemical composition. Imitations do not. Experts can tell the difference between synthetic and real by the patterns of impurities in the stones. "m4816k" wrote in message ... I was reading online this afternoon about synthetic diamonds, and how there are "products" like those from Gemesis and/or Apollo, that are really lab created diamonds with all the characteristics (optical, physical and chemical) of the natural stones. But my question would regard other gemstone varieties, and their "lab growing". I saw many sites selling synthetic sapphires, rubies, alexandrites, topaz... Are they also completely the same as natural ones, or they're produced diferently, so they aren't actually identical to the natural stones, if we exclude the optical factor? Thanks! P. S. This goes especially for blue topaz since I read that it's done from spinel, but don't know anything about sapphires. |
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