Older Lucite bangles or modern plastic from yesterday?!

Hello all, I would appreciate any opinions on these two bangles I picked up yesterday. I still find it quite difficult to recogise older Lucite jewelry (Bakelite is slightly easier!). They stood out as looking a little older to me and decent quality. They are both 3.5"W x 1"H. One is a light amber color, the other is pale yellow-both have lots of bubbles inside. One is unfortunately cracked (they don't have seams). Shape slightly faceted. Are they Lucite? do they have any age or are they just a modern plastic from a department store? Thanks a lot