Gold Content on Heavy Gold Cross

Hello! I have a very heavy gold cross that was my mother's . I can not find a numerical mark on the piece so I can only assume through research it may be French in origin. However, on the bale I did see something with my loupe---it is two people, presumably male , with arms touching one another, as if they were almost shaking hands.

What do you think the gold content of the cross may be? It is somewhat "yellower" than other pieces of gold in her collection. She has passed on and from memory, I know she bought a lot of gold while traveling in Europe, especially Italy. Thanks for any help you may offer to me. Regards, Doris