Can we use subsitutes for glass or crystals in decorative lighting?

[Cecil Lee]

Majority of Traditional Feng Shui practitioners will agree that light plays an important part in generating beneficial Qi.
Do you know whether we should buy a decorative lamp or a chanderlier made of glass or crystal only? Can subsitutes like plastic or ceramic be used?
Participate in the poll below:-
Answer will appear at a later date under the conference: Answers! to the Fun Edu-Polls.

Lighting is considered beneficial Qi

Since lighting is considered beneificial Qi, does it matter if the lamp has to be glass or crystal. Can it be other materials like plastic? Yes, I think so. No, it has to be glass or crystal I give up! Current Results