Vintage Very Large Brooch Pendant Aurora Borealis orders & Brownish Purple Rhinestones

Vintage Very Large Brooch Pendant Aurora Borealis & Purple Rhinestones
Large Purple emerald cut & smaller purple round rhinestones are
surrounded by beautiful aurora borealis rhinestones
Also has some pink rhinestone accents
It is a brooch & also a pendant
It is unsigned
The pictures do not show the true beauty of this piece
I am not sure of the age orders, I think 1960's or 70's?
Condition: Very nice
some of the gold color plating on back has come off, does not affect the front of the piece