第4个回答 2009-07-26
除了4c,还有一些需要考虑的东西:
1.Total Depth Percentage深度比例:57.5%-63%,严选60%-62.3%
2.Table Percentage 桌面比例:52%-62%, 严选54-58%
3.Crown Angle 冠部角度:31.5-36.5度,严选34-35度
4.Crown Height Percentage 冠部高度比例: 12.5%-17%,严选 15-15.5.%
5. Pavilion Angle 底部角度: 40.4-41.8度,严选40.5-41 度
6.Pavillion Depth Percentage 底部深度比例: 42.5-44.5%,严选42.5-43.5.%
7.Star Facet Length Percentage 星形刻面长度比例:45%-65%,严选50-55%
8. Lower Girdle Facet Percentage 腰下刻面比例:70%-85%,严选75%
9.Girdle Thickness 腰围厚度:Thin,Thin to Medium.,Thin to Slightly Thick,Medium,Medium to Slightly Thick,Slightly Thick.等六种 严选 Thin to Medium,Medium,Medium to Slightly Thick等三种
10.Girdle Thickness Percentage 腰围厚度比例:2.5%-4.5%,严选2.5-3.8%
11.Culet Size 底尖大小:None-very small,small,严选None
12.Polish 抛光:Very Good or Excellent,严选Excellent
如果上述指标也都一样,那当然更看重价格了:)