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帖子主题: 宝玉石基础知识

宝玉石基础知识

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下面的仪器是克拉秤
[IMGA]http://colorlane.com/UploadFile/2006-10/20061011214947005.jpg[/IMGA]

[IMGA]http://colorlane.com/UploadFile/2006-10/200610112141888289.jpg[/IMGA]
切工的目的是为了将宝石的光学效果发挥到最佳
任何以破坏宝石光学效果的切工都是误导

[IMGA]http://colorlane.com/UploadFile/2006-10/20061011215479143.jpg[/IMGA]

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[IMGA]http://colorlane.com/UploadFile/2006-10/2006101121104246423.jpg[/IMGA]
以猫眼和变色最为罕见

[IMGA]http://colorlane.com/UploadFile/2006-10/2006101121105779390.jpg[/IMGA]

[IMGA]http://colorlane.com/UploadFile/2006-10/2006101121111156058.jpg[/IMGA]
只有金绿宝石中具有猫眼效应的可以直接叫猫眼
其他具有猫眼效应的宝石只能称为具有猫眼效应的某某宝石

[IMGA]http://colorlane.com/UploadFile/2006-10/2006101121112815520.jpg[/IMGA]
星光宝石是有规律的
比如星光红蓝宝天然中一般是6根线发现过12根线的
如果不是6或12根线必然是假的

[IMGA]http://colorlane.com/UploadFile/2006-10/2006101121113731747.jpg[/IMGA]
某些宝石如果有裂隙也会在阳光的照射下产生类似的效果
其实是裂隙将阳光折射产生的效果有点像我们原先玩的三棱镜

[IMGA]http://colorlane.com/UploadFile/2006-10/2006101121115466032.jpg[/IMGA]
变色是最为罕见的效果
除了变石很多宝石中偶然都会出现在常态下变色的特殊种类
比如有在常态下三次变色的钻石
这种就属于非常罕见非常珍贵的宝石了价格往往是天价

好象是课件哦.