文档介绍：玉髓玉玛瑙等区别
玉髓与玉的区别
2012-09-11 来源:山东收藏网 [我要评论]
【导读】如今，有越来越多的人开始关注收藏，开始进入到收藏的行列。可是，对于收藏新人来说，琳琅满目的藏品给他们带来或多或少的烦恼，有些藏品分类细致，有些藏品同类但差别很大，有些藏品不同类但非常相似，这些不大不小的问题，造成了新人们的混乱，最近，就出现这样的一个问题:“玉髓是玉吗?”小编回答:玉髓不是玉。为了让大家弄清楚这个问题，小编就来为大家讲一讲玉髓与玉的区别。
首先，要弄清楚两者的定义。在矿物学中，严格的玉的定义只包括了极少几个玉石品种，如翡翠、和田玉等，其中并没有玉髓。但是“玉石”的概念范围就大了很多，玉髓就是玉石之一。 containing gross errors, should immediately test if determined when monitoring data contain a large systematic errors, you should analyze ... quality inspection and acceptance monitoring of equipment inspection and delivery inspection all our procurement monitoring equipment shall be as provided in section of the terms of this technology, inspection and acceptance of delivery, and should include monitoring equipment factory inspection and test reports and delivery acceptance, acceptance certificate information supervising people. monitoring instruments installed inbuilt quality check each measuring point measuring instruments and equipment after completion of installation, Embedment, immediately to inspect and test the quality of equipment installation, Embedment, and confirmed by the supervisor to check the quality before being allowed to begin monitoring contract work. Section of completion on completion of each observation all monitoring equipment installed after laying, of 52nd of the references to this agreement the terms of the contract provisions, apply to the supervisor to monitor the project's acceptance of special, and according to the technical provisions . the
其次，玉髓与玉的成分不同，这是两者有区别的重要原因。玉的主要成份均
为 Ca2(Mg, Fe)5Si8O22(OH)2);而玉髓的化主要成分是二氧化硅(SiO2)，是隐晶质石英的集合体。这样看来，它们并不是同一类物质。
通过上面的内容，我们可以认识到，玉髓与玉是有区别的。但因为玉的种类很多，无法以共性和玉髓比较，所以下面小编挑选了几种和玉髓相似的玉分别来作比较:
绿玉髓与绿色翡翠
绿玉髓表面光亮，质地细腻。颜色通常为苹果绿色，能看见不同程度的深浅变化，呈半透明状。绿玉髓比较脆，加热或暴露于阳光下会使之退色。绿色翡翠具有变斑晶交织结构，可见斑状或纤维状硬玉晶体，外表呈现玻璃光泽，大多半透明或透明，翠色浓艳纯正。在重量上， ~ 。
绿玉髓与绿松石
绿玉髓一般为半透明，,7;绿松石通常不透明，摩氏硬度低，为5,6。两者非常容易分辨。
containing gross errors, s