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Formula for HCA

aftereffects15|1403327794|3697817 said:
What's the formula https://www.pricescope.com/tools/hca uses to calculate the score? I wasn't able to find a straight forward formula online - anyone know?

Garry Holloway created the HCA, aka Holloway Cut Advisor.
I wouldn't be surprised if his math is proprietary, but it wouldn't hurt to email him and ask.

You can contact him through his website. http://www.hollowaydiamonds.com.au
 
have a look at the patent if you really want to know, and Garry wont disclose.
 
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