Online eCS Calculator
 
We strongly recommend that buyers maximize the value of their diamond purchases by selecting only those with an e-Praise Cut Score of eCS=1.000 whenever possible. Even with an "Ideal" (or equivalent superlative) rating in their gemological reports, stones with any other eCS are not cut to maximize their "fire" and "brilliance". For more on this topic, please see the study at eCS:  A Common Basis.
 
Carefully enter all the following data for your diamond:   
     
ID (Optional, for your records):    
Shape and Cut:        
      Use periods (.) for decimals:
Width 1:     Width 2:   Depth:  , mm
Weight:    , carats
 
                                                                              

IMPORTANT: The dimensional and weight data provided must be certified or actually measured values. Any estimated, calculated or fictitious values will give a result with no significance whatsoever.
 

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