Create a milky white translucent scattering

Caio Nicola, I need help creating a material to replicate a moonstone. Similar to the image below …

I want a milky white. I would prefer to use one object and not 2, one inside the other.

I have made a starting attempt in the attached frt and frn files.

If I have to use a texture map let me know.

A presto, Randy

Moonstone.zip (2.0 MB)