这个也是绝。。。
http://www.studiosoft.it/JewelryGemstonesSecrets.htm
[quote]
Synthetic Precious Gemstone
A synthetic, or created, gem material is one with essentially the same physical, chemical and optical properties as its natural counterpart. There cannot be a synthetic gem if there is not a natural gem. Although many gem materials have been synthesized experimentally, only a relative few synthetic gems are available in commercial quantities.
Melt Synthetics
The flame fusion process currently produces synthetic spinel, synthetic ruby, synthetic star ruby, synthetic star sapphire and synthetic sapphire in all colors. It is a process of bringing the powder compounds up to an extremely high temperature, to the point at which the compound melts to create a liquid that will slowly cool and crystallize into the desired gem material. The cooling process currently produces synthetic alexandrite, synthetic ruby, synthetic sapphire in many colors and yttrium aluminum garnet - "YAG" in all colors.
Solution Synthetics
The flux process, originally pioneered by Tom Chatham, currently produces synthetic alexandrite, synthetic emerald, synthetic ruby, synthetic sapphire in blue, orange, and pink, YAG, primarily green and synthetic spinel. This process takes the powder compounds and adds a liquid solution to dissolve the compound prior to super heating. This process produces a cleaner, clearer gem material. The hydrothermal process currently produces synthetic quartz in amethyst, citrine, green rock crystal, blue and pink varieties, synthetic ruby, synthetic sapphire, and synthetic beryl in various colors including emerald. This process incorporates the use of a reactor in the super heating process. It also produces a cleaner, clearer gem material.
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发表于 1-5-2008 05:00 PM
怎莫现今的翻版技术大多都说大陆
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