BS DD 234-1996 分级抛光的钻石.术语和分类

标准号：BS DD 234-1996
中文标准名称：分级抛光的钻石.术语和分类
英文标准名称：Grading polished diamonds - Terminology and classification
标准类型：D50
发布日期：1996/6/15 12:00:00
实施日期：1996/6/15 12:00:00
中国标准分类号：D50
国际标准分类号：01.040.39;39.060
适用范围：This Technical Report specifies the terminology and classification to be used for the grading and description of polished diamonds.This Technical Report shall only be used for natural, unmounted, polished diamonds. It shall not be used for synthetic diamonds, treated diamonds (other than is allowed for in 3.3), or for assembled stones(see 3.5).A terminology and classification for the colour of fancy coloured diamonds (see 5.1.2) is in the course of preparation.Test methods concerning the technical application of this terminology and classification are in the course of preparation.