TV / Movies: Born July 13, 1942, He Starred In This Movie: A Century of Cinema ?

Questions

The birthstone for which month is opal?

Which russian jeweller exhibited his mperial Easter Eggs at a Paris Exhibition of 1900?

On a hallmark, which metal is indicated by a Lion passant in England and a lion rampant in Scotland?

Which King introduced the statute which instituted hall marking in England?

What is the name given to a gem made from 2 stones arranged in differently coloured layers, with figures carved into the top layer, which is set in relief against the others?