Responses
This is the only one I can think of that involves a tribal charm and there’s also a professor that “helps” later in the story.
http://www.mangago.me/read-manga/inner_beauty/?9g57
It was about a guy who's finding for his "The one" through a charm like a keychain? And the other pair of keychain was sold from another country, i think the design kinda looked like a carved stone/wood made from a tribe and i think the charm's history was discussed by a professional who specializes in those stuff