Any info on this Schiaparelli Set?

Hi! I purchased a signed Schiaparelli set at a flea market yesterday. The seller was selling many various items but this set caught my eyes and heart due to the coloration and age to it.

I gave a dollar for the set and when I came home I noticed the ,"Schiaperelli" signature on the back of the bracelet clasp as well as on the earring clips.

I am very curious to learn more information about these pieces and the designer. If there is a way to appraise it I'd love to learn any information please. I am very fond of vintage and antique jewelry and plan to wear these pieces on a daily basis along with my other items.

Any help as well as tips on cleaning this set will be appreciated!
Sorry about the clarity of the photos. I took them with phone.