waht was found on venus diamond, sapphire or gem?

Answer 1

None of the above. Of the few probes that have landed on Venus, none have lasted long enough to perform any kind of search or analysis of the Venusian terrain.

Answer 2

I have not heard of any gemstones of any type found by the Venera landers. Due to the heat, pressure and probably chemical structure of the atmosphere at the surface, it is likely that most of the surface has been oxidized into a type of rust except where new materials have come up to the surface through vulcanism.

Answer 3

Venus isn't really into bling. It's her sister, Serena, that likes that kind of stuff.