Mathematical Formula Needed for Rappaport Diamond Excel

Mathematical Formula Needed for Rappaport Diamond Excel

Cancelled

Job Description

We need someone to create a mathematical formula form a large set of diamond price samples.
See here for the sample list :
http://technet.rapaport.com/Info/Prices/Available_Price_List_Formats.aspx

I need a formula that will help me determine average cost per carat, then average price increase per additional variable like - cut , color, clarity , etc.

Does this make sense?