Black = contrast
Red = light return
Pink = partial light return
White = light leakage
呢d你應該google到

3張圖都OK
中間果粒有機會多少少 leakage
我估HCA light return應該冇excellent

?
不過唔拍埋一齊都唔會睇得出
另外兩粒個proportion應該差唔多
BTW JA d true hearts既standard真係冇WF, BGD, HP呢d好
你要買proprietary cut就揀返d 有in-house stone既vendor啦

