1970s Giorgio Sant Angelo Ensemble

This is a rare and gorgeous 3 piece set by Sant' Angelo, circa the late 1970s.
The fabric is a sheer, floaty material. There are no fabric content labels, but it feels like it may be rayon. It is very fine material, with tiny, open weave, textured squares every 1/4". The tank top and jacket are studded with prong set, faceted crystals in green, orange and blue.The pants are classic harem style, with a back zipper, full legs tapering to the ankle. The pants have side pockets, and are fully lined..