Gneiss is pronounced as “nice”.
Geologically speaking, a gneiss rock is a metamorphic rock.
Conversation between my lab partner while we were trying to identify rocks:
*Classmate grabs rock sample C*
Me: Oh that’s a gneiss rock you got there (It was actually a gneiss rock)
*Classmate grabs rock sample D*
Classmate: Ew this rock looks ugly
Me: Well, that’s not very gneiss… (The rock really wasn’t a gneiss one)
Classmate: Really Jacky? 😛
Me: You have to give me credit for that gneiss joke