Retro 60s colored Italian lucite plastic flowers, vintage Crystalin

We love these bright glass-like plastic flowers, but haven't been able to find out much of anything about Crystalin (other than it's 60s vintage, made in Italy) or J. Corelli. These remind us of those beautiful old Murano glass flowers used in lamps and chandeliers

Each individual flower and leaf has been wired by hand into a large branch covered with silk or rayon thread, and the arching branch measures about 12 1/2" across, unfinished at the end intended for a vase or cachepot?