I have a crystal glass bowl along with a crystal tortoise. feng shui says having some water in the bowl with the tortoise is good. But, what has happened is over a period of time is that the bowl and the tortoise have slowly started to have some dust collection/rust or greasy (sorry don't know the exact term).
I have tried to clean with soap water, using hard brush etc. But nothing seems to make the crystal shine again. Can you please suggest what I should do.? Thank you all.