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如何选购松石

作者:瑞瑞 点击:次 时间:2009-11-07 16:46

如何选购天然的好松石,教你识别宝石的好方法;

1. 颜色:高档绿松石的颜色是标准的天蓝色;其次为深蓝色、蓝绿色,且要求颜色均匀,颜色越纯正越均匀,价格就越高。

2. 比重及硬度:高档绿松石要求具有较高的密度和硬度,即密度约在2.7g/cm3左右,摩氏硬度在6左右,因为密度质直接反应出绿松石受风化的程度,随着风化程度的加深,绿松石相对密度和硬度降低,颜色和品质也明显降低。

3. 纯净度:绿松石内常含粘土矿物和方解石等杂质,这些杂质多呈白色,杂质越多,品质就越低。

4. 特殊花纹:如果绿松石有特殊的花纹,特别是具有特殊性和象征意义时,它的价值就相对提高,产品将受到好评。

5. 块度:在绿松石原矿的销售中,对块度有一定的要求,越大的块度,其价值就越高。
 


 

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