切工

对于一颗成品钻石，国际上通常以4C标准，即颜色（Color）、重量（Caratage）、净度（Clarity）和切工（Cut）对其品质进行分级。

An end product diamond is usually classified by 4C standard ( color , carat , clarity , cut ) .

全自动钻石切工分析系统的原理和应用

Principle and Application of Automatic Diamond Cut Measuring System

SPEED快速钻石切工评价&NCJV的钻石切工评估方法

AN EVALUATION OF THE " SPEED " RAPID DIAMOND CUTTING & NCJV Evaluation Method of Diamond Cutting

澳大利亚珠宝评估师协会的SPEED方法，把切工分成5个步骤，能全面的对钻石的切工进行评价。

The " SPEED " method of Australia Jewellery Evaluation Association divides the cutting into 5 steps , which can evaluate comprehensively the cutting of diamond .

这颗水滴形钻石已经被美国宝石学院鉴定为D色和TypeIIA级，这意味着它的内部毫无瑕疵、切工完美，化学纯度达到顶级，并有着极佳的光学透明度。

The briolette has been graded by the Gemological Institute of America to be of D color and type IIa , indicating its internally flawless clarity , excellent polish , highest level of chemical purity and exceptional optical transparency .

最佳的明亮度是现代钻石切工所追求的目标。

The best brilliance is what the modern diamond cutting pursuits .

可爱的饼干切工切割可爱的饼干。

The cute cookie cutters cut cute cookies .

镶嵌钻石的切工测量新方法

New method for diamond cut measurement

钻石切工领域的新进展

New Development in Diamond Cut

了解钻石，熟悉钻石&理想切工推出之后

Know More about Diamond

评级标准的实质就是切割数据，因为切割数据决定着切工品质。

The essence of grades standard is gem cutting database – processing rules system , for cutting data determines cutting quality .

虽然基于数字图像处理的钻石切工识别技术在国外已经有所发展，但是由于钻石图像的复杂性，数字图像处理算法仍在研究。

Although the techniques of detecting diamond cutting have made great progress , digital image processing algorithms system are still under development because of complex diamond image .

主要介绍了中国地质大学（武汉）珠宝学院自主研制的全自动钻石切工分析系统的硬件组成、图像处理以及切工比率的计算、评估与应用等。

The hardware and software of the automatic diamond cut measuring system developed by Gemmological Institute , China University of Geosciences ( Wuhan ), are mainly described in the paper .

从定向、琢型、比例、对称程度和抛光修饰度等方面探讨了刚玉宝石的切工质量评价标准。

At last , the appraising standards of the cut quality of gem corundum are probed from the aspects of orientation , shape of cut , proportion , symmetry and polish .

论文首先对问题提出的背景和钻石切工识别与评价技术在国内外的研究概况进行了简单介绍和回顾，并分析了我国钻石切工评价标准。

This paper introduces firstly the background of this research , reviews briefly the development situation of diamond cutting identification and evaluation at home and abroad and analyzes diamond cutting evaluation standard in China .