鑽石對稱 (Symmetry)

「八心八箭車工」H&A是種要求對稱性高、

接近完美車工比例的切工

5. 鑽石對稱 (Diamond Symmerty)

左一為對稱完美八心八箭車工、右邊三個角度深淺不一、裂心歪箭、刻面大小不一等等,

結論:建議是挑選鑽石最高等級 - Excellent。

>> 延伸閱讀:八心八箭怎麼看?完美八心八箭車工

GIA鑽石等級怎麼分?鑽石4C表、7種鑽石等級區分法大公開


  1. 鑽石克拉 (Carat) - 鑽石克拉重量大小,一克拉 = 100分 = 0.2公克,直徑約6.5mm
  2. 鑽石顏色 (Color) - GIA鑽石顏色等級區分D最白,愈白愈好。建議選鑽石顏色D,E,F,G,H
  3. 鑽石淨度 (Clarity) - FL無瑕,鑽石淨度VVS與VS肉眼不可見雜質,需以放大鏡分辨
  4. 鑽石車工 (Cut) - 「鑽石3Excellent」接近完美車工比例,亮度最好、而鑽石比利時車工工藝最好。
  5. 鑽石對稱 (Symmetry) - 「八心八箭車工」H&A是種要求對稱性高、接近完美車工比例的切工
  6. 鑽石拋光 (Polish) - 切割面要研磨光滑
  7. 鑽石螢光反應 (Diamond Fluorescence) - 初次購買建議選購無螢光或微弱中等(None / Faint)的鑽石


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八心八箭怎麼看?完美八心八箭車工大公開

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參考連結 External Links:

安特衛普世界鑽石交易中心 AWDC
https://www.awdc.be/en/mission
https://en.wikipedia.org/wiki/Antwerp_World_Diamond_Centre
 
美國寶石學院 - GIA, Gemological Institute of America
https://www.gia.edu/
https://www.gia.edu/gia-career
https://www.gia.edu/gem-encyclopedia
https://en.wikipedia.org/wiki/Gemological_Institute_of_America
 
GIA證書查詢 - GIA Report Check
https://www.gia.edu/report-check-landing
 
GIA Diamond Reports & Service
https://www.gia.edu/gem-lab-service/diamond-grading
 
比利時鑽石高等評議會 - HRD, Hoge Raad voor Diamant
http://www.hrdantwerp.com/en/home
http://www.hrdantwerp.com/en/about-diamonds
http://www.hrdantwerp.com/en/4cs-of-diamonds/carat
http://www.hrdantwerp.com/en/4cs-of-diamonds/colour
http://www.hrdantwerp.com/en/4cs-of-diamonds/clarity
http://www.hrdantwerp.com/en/4cs-of-diamonds/cut
 
歐洲寶石學實驗室 - EGL, European Gemological Laboratory
http://eglantwerp.eu/default.aspx
http://www.eglasia.com.hk/index.html
https://www.eglusa.com/
https://en.wikipedia.org/wiki/European_Gemological_Laboratory_(USA)
 
國際寶石學會 - IGI, International Gemological Institute
http://www.igiworldwide.com/index.php
http://www.igiworldwide.com/diamond.html Diamond report 
http://www.igiworldwide.com/hearts_arrows.html H&A Report 
https://en.wikipedia.org/wiki/International_Gemological_Institute Wikipedia 
 
美國寶石協會 - AGS, American Gem Society
https://www.americangemsociety.org/zh_hant/4cs
https://www.americangemsociety.org/zh_hant/agslabs
https://www.americangemsociety.org/zh_hant/tutorials
https://en.wikipedia.org/wiki/American_Gem_Society
 
RAPAPORT官方網站
www.diamonds.net/
 
Wikipedia:RAPAPORT Diamond Report
en.wikipedia.org/wiki/Rapaport_Diamond_Report
 
Wikipedia:馬丁 拉帕波特
en.wikipedia.org/wiki/Martin_Rapaport
 
Wikipedia:克拉 - 鑽石4C、鑽石等級區分、鑽石等級表
https://en.wikipedia.org/wiki/Carat_(mass)
 
Wikipedia:鑽石顏色 - 鑽石4C、鑽石等級區分、鑽石等級表
https://en.wikipedia.org/wiki/Diamond_color
 
Wikipedia:鑽石淨度 - 鑽石4C、鑽石等級區分、鑽石等級表
https://en.wikipedia.org/wiki/Diamond_clarity
 
Wikipedia:鑽石車工 - 鑽石4C、鑽石等級區分、鑽石等級表
https://en.wikipedia.org/wiki/Diamond_cut
 
Wikipedia:八心八箭、H&A、鑽石車工3ex - 鑽石車工等級、鑽石4C、鑽石等級區分、鑽石等級表
https://en.wikipedia.org/wiki/Hearts_and_arrows
 
Wikipedia:圓明亮式車工 - 鑽石4C、鑽石等級區分、鑽石等級表
https://en.wikipedia.org/wiki/Brilliant_(diamond_cut)
Wikipedia:托考夫斯基車工
https://en.wikipedia.org/wiki/Marcel_Tolkowsky
 
鑽石切割理論 Diamond Design -
A Study of the Reflection and the Refration of Light ina Diamond by Marcel Tolkowsky
http://www.folds.net/diamond/