绿色翡翠同色异谱的色度学特征及评价  

COLORIMETRIC CHARACTERS AND EVALUATION OF SAME COLOR WITH DIFFERENT SPECTRUM OF GREEN JADEITE

作　　者：郭颖[1] 潘兆橹[1] 范静媛 

机构地区：[1]中国地质大学(北京)珠宝学院,北京100083 [2]中国珠宝首饰质量监督检验中心,北京100101

出　　处：《矿产与地质》2003年第2期173-176,共4页Mineral Resources and Geology

摘　　要：翡翠颜色随外界环境的不同而有所变化,通过引入同色异谱概念,对绿色翡翠的颜色进行定量计算。实验表明:更换照明光源后求得的不同样品间的同色异谱指数Mt有很大差别,而同一样品颜色的主波长值也会相应变化,颜色变化程度低的易成为优质翡翠。提出,可将同色异谱作为衡量翡翠优劣的一个定性指标,用以指导绿色翡翠的鉴定、评价,指出同色异谱方法更适用于优质翡翠的评估。Jadeite color will be different with the change of environment.Therefore,this article introduces the concept of Metamerism and calculates the color quantitatively.It is shown that Metamerism indexes(Mt) of different samples are different and the same sample's main wavelength follows the change while illuminators altered.As a result,the lower degree of Metamerism the better the jade.So,Metamerism can be taken as a standard of jade evaluation for its quality.It can also be used to guide jadeite identification and evaluation.Finally,It is pointed out that the method is better to be used for high quality green jadeite.

关 键 词：翡翠 三刺激值 同色异谱 色差 标准光源 

分 类 号：P619.281[天文地球—矿床学]