If silver circles aren't your thing, try on the Square Silver Cufflinks by Christine Bossler.  These little cufflinks are made of thick slabs of sterling silver with a brushed finish.  The brush marks on the finish give these an ever so slightly rugged look, like you have been using your hands (French cuff shirt and all) for some serious work.

These cufflinks measure 1/2" (13mm) wide and are soldered to the cufflink posts.  Because they are handmade each pair will be slightly different.