3Dean Loc: Southern California

Without actually seeing this chandelier for myself, it's difficult to suggest a complete solution. The issues that I'm seeing are exposure (perhaps too great of a dynamic range for the camera's sensor), color balance (much too warm), and focus (perhaps too soft to show the sparkles clearly).

This might also be a good candidate for an HDR image. Assuming that the sparkles can be photographed successfully with a shorter, more focused exposure, an HDR merger with longer exposures might produce the result you're looking for.

Other than that, I'm out of ideas.

pfredd

Some very good suggestions, But I've been there and done all that over several shoots, then I posted hoping someone else has faced the problem.
My thinking is along the lines that a CMOS can not capture very narrow, and not reflected.light frequencies. I feel this may somehow related to the effects in shooting a frame totally filled with one colour, i.e. closeup of a coloured matt board.
For what it's worth, Canon tech service (?) said I should send box & glass because they must be out of factory specs. Well, I did — Canon charged something over $120, returned to 'factory specs'. There was absolutely no difference upon return. Guess the problem is unsolvable for now, though I will look for friend still shooting colour film.
Thanks for your attention ....Cheers, P