hallo there! I can´t get the right material for a crystal shader. tried it with mr and maya shaders but all I get is a boring transparent object. googled the whole day but there seem to be very few tutorials for creating this crisp reflective effect when a light source hits the facetes from a diamond or something like that. also I´d be curious how to split the white source light into rgb after the light rays crossed the material and step out as caustics. right now the light is monochrome + material is lame = §$%&

any help is much appreciated.