Curtain made of crystals

Hello everyone. I hope we are all well.

I'm not sure how to attach images to this post, so You'll have to wing it!

I'm making up a huge hall like area, for my book, and hung from the ceiling will be a curtain made from crystals. A little like a chandelier type thing.
Could you please the best way to approach this? Either by a plain with the texture of crystals, or hundreds of crsytals with a vray material applied.
Also, do you think I could get away with using caustics for a brilliant render, or would that be very costly on memory?

thank you guys!