Help With Diamond Surfacing Maya 2016

jose.fuentes

I am trying to render a crystal/diamond sphere - I am about 80% I feel, but I'd like to get stronger highlights. I've messed around with some of the settings in mental ray but not getting anything I'm particularly happy with. Any thoughts?

I have one spot light with HDRI turned on, one point light, and an HDRI map

Har

I don't use Maya, but if you can post your current material setup the folks at polycount may be able to help .