These cufflinks measure approx. 3/4" X 1/2", at their widest, and are marked STERLING, CORRECT. NOTE: one of the shanks on one of the cufflinks is bent, that has been figured into the price. Please look at all photographs, as they are part of the description and ask any and all questions prior to looking. Thank! Launched from my store - Powered by Highwire.com Track Page Views With Auctiva's FREE CounterEvery buyer gets a MyStoreRewards invitation for cash back