925 marked brooch mexico?

[woo0]

I just found this nice looking brooch but I cant find the artist or possible date of manufacturer.I also am not sure of the stone it is a real stone very heavy and thick.The marks are BSP 925 I also see cuernocova any help appreciated there is something before last letters nuen which is before cuernocova.

[2209patrick]

Hello. Don't know who used the BSP mark.
Cuernavaca is the capital city of Morelos, one of Mexico's smallest states.

Pat.

[JLDoggett]

They were origionally sold as jade or emerald depending where they were bought, most were made in the 50's and later.

[woo0]

thanks for all the info