A Salt Lamp and a Candle

Tried to replicate a salt lamp sitting on my table, but only with a limited success, despite the complexity of the procedural material of the lamp. The actual lamp has some visible (and totally amazing) structural irregularities - cracks, colour variations, etc. If it is possible to do with surface (and/or volume) materials alone, without affecting actual geometry, I wasn’t successful at figuring out, how.

A Salt Lamp crystal, a coffee cup, a candle all have procedural-only materials. The rest are image-based, I used some objects from a different scene to fill in.