Pure_Morning, that's an interesting mel...but even with this the crystal is not reflected in the water :(
Yes, the pillars are clearly seen in the water now, but the crystal doesn’t.
Sorry, maybe is the angle or the distance between water and crystal is too big, but I think is the angle that don't let us to see the crystal's reflection in the water.
Soon I will update my scene with the modifications I made.
Cheers.