| 发明名称 |
A METHOD OF ASSESSING THE COLOUR IN DIAMONDS AND OTHER GEMS |
| 摘要 |
A method of assessing the colour of a diamond or other gem is provided which comprises determining the proportion of diffuse light incident upon the gem which is transmitted by the gem as well as a device for use in this method. |
| 申请公布号 |
DE3174385(D1) |
申请公布日期 |
1986.05.22 |
| 申请号 |
DE19813174385 |
申请日期 |
1981.05.21 |
| 申请人 |
DE BEERS CONSOLIDATED MINES LIMITED |
发明人 |
WOODS, GEOFFREY STEWARD |
| 分类号 |
G01N21/87;(IPC1-7):G01N21/87 |
主分类号 |
G01N21/87 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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