Vintage Smoky topaz cuff links & tie tac set gold cups

Nice vintage men's set of Burlington cuff links and matching tie tac. Faceted smoky quartz or topaz, I'm not sure, these are in the original box, and it is the only Identification I have for them, other than knowing the are 1950's or older. Original sticker behind the tie tac says GOLD CUP but I see no markings on the metal, and have no way to test. They are beautiful and probably worth much more than we have them listed for. Beautiful condition.