glass material with flecks inside the glass?

[Kinetic99]

Hello and thanks for your time,

I've got my glass material but I was wondering how I can introduce dark splotches or speckles inside the glass material, and not to be mapped on the outside of the material. It can be procedurally or bitmaps.

Create the illusion of impurities inside clear ( or tinted) glass.

K

[Syclone1]

my first thought would be to try the V-ray Environment Fog or particle flow.