任南红山文化网--發起義拍玉树賑災!

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看看尾部凸起物.问题在何处?

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代任南老师上传

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《减》

任南

自然态

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自然态在体式显微镜下的表象<而仿品厂不知倍数.故仿次生凸起是可目测到>

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[此贴子已经被作者于2008-4-22 12:19:45编辑过]

掌门人

净中次生要悟通.仿家芝麻当西瓜.西瓜怎能做芝麻

kingking

太漂亮了[em02]

任南

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    肥：真品红山玉显现的肥油状物质(解理)多存在于透闪石材质的玉器中，其表象与原材质有明显色差，其所处部位应与玉体存在明显凸起或凹陷，边缘清晰且带沟槽，立体电子显微镜下观察此种特征尤为明显，肥油状部位透光率明显高于其他部位。而仿品多用含有白色油状物的钾长石或滑石仿制，其料质极软。

任南

       熟：熟为真品红山玉整体因地热、地压等物化的作用而产生的一种质的变化，玉整体呈现水充盈状态，经电子扫描测试，其含水量明显高于生玉。此特征要注意区分老料仿品，老料仿品表层无自然态。
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任南

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任南

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浆[upload=jpg]UploadFile/2008-4/200842410381226220.jpg[/upload]
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