This looks like a xGasteraloe, not Haworthia... leaves look glossy, with a different texture. I'd guess a hybrid of Aloe (Aristaloe) aristata, but I wouldn't know more than that. Perhaps something along these lines:
Haworthias do not have glossy leaves (as far as I know). That's an easy start. The picture in the link above is straight up Aristaloe aristata, which would (presumably) be one of the parents of your plant. Also not glossy.