Help!! Elephant figurines.

My father in law's mother passed away years ago. While cleaning out her basement we found a box of elephant figurines. We had no idea where, when, or how she obtained these... Both wooden elephant's feel hand sculpted. The larger of the two is noticeably heavier than the smaller one. The smaller one is lighter in color and is light. The group of four brass (we think they are brass) elephants have markings and designs on them. The elephants that are not brass or wood, we have no idea of their material, origin, etc.. My father in law thought one set might be made of Onyx. Any guidance for identifying anything regarding these items are welcomed and appreciated. **many of the best pictures i took are larger than 2 meg. I will attempt to resize then post