Five Extraordinary Pair of Cufflinks acquired through the years:
Rhinestone. 1950’s - My mother wore these on a favorite blouse.  
Arabic coins - 4 of them. Bought in 1960s when I lived in Arabia.
Blue glass stone on silver colored metal. 1950s - Another fancy pair from my mother who had friends in the 'jewelry business". 
Carved dragon ivory - Came down on the Ebert family side.
Silver with polished stone - Very dark silver; unknown stone set flush. Probably from a trip Mother made to Mexico.