No. Stars vary in size from teeny-tiny, barely-stars-at-all brown dwarfs to enormous blazing super-giants than can are visible from other galaxies. In fact, the closest star to our Sun is Proxima...
two of Gemini's stars are bright, the biggest one of the two however is Pollux. The two brightest stars in the Gemini constellation are what some people say are the "twins" that represent the Gemini...
Sorry to disappoint you, but a star-gauge is a machine shop device- it is a sort of punch with an asterisk design ( hence the name) if you had a star-gauge mark on a Springfield Rifle, it had met or...