NWOT VINTAGE Set of 2 Amber like Made in Austria bangles

NWOT VINTAGE Set of 2 Amber like Made in Austria bangles bracelets These are NWOT but have so many scratches and marks on the gold edges. It’s very lightweight. I think it’s a type of plastic or resin that was popular then (especially chic from Europe) but the name escapes me right now. The “inlay” looks like amber: opaque, dark orange-brown amber colour, with cream-black inclusions. Inclusions look like they are suspended in the “Amber”. Original manufacturer tags are on: made in Austria. Vintage. C 1970s.