Look at the jewelry I found in my attic.

AsI was cleaning out the attic a came across a treasure trove of things people collect. The photo's are of a few set of jewelry from one box.
First photo - I remember wearing this set to the Disco back when.
Second photo - this set was great in the summer. Made from shell and abalone, I think.
Third photo - one of my favorite things. Made from Ivory & Gold ribbon.
It has some kind of mark in it but I can't read it. I stopped wearing it because it to fragile. The ribbon was falling off, one ring has none left.
Forth photo - 2 beautiful Tortoiseshell cuff bracelets I bought in the Caribbean back in the early 80's. I didn't know at the time it was illegal to bring Tortoiseshell items into the US.
Does anyone know who the manufacturer's maybe be of the first three items?
Thank you for your help.