Another Unkown Movie

[Livrefemme]

Dear Vintage Movie Fans:

 

I remember a movie from I saw a long time that involved an African Safari and one of the natives brought to the woman a large, beautiful rock as a gift. She realizes it's a diamond and of course the search is on for diamonds instead of animals. The movie was made sometime in the 1930's (I believe). That's all I remember. I thought it might be The Jonker Diamond but I think it was a full-length movie. All help is greatly appreciated!