A rough diamond
A:Where did you find that new guy working in the warehouse?
B:I recruited him through an employment service. What do you think of him?
A:Well, my first impression was not very good. He seems to be a good worker but his language is not very good.
B:I thought he might be a rough diamond but I expect he will improve in time.
A:창고에서 일하고 있는 저 신참 직원은 어디서 채용한 거야?
B:채용 대행사를 통해 고용했지. 어때 보여?
A:첫인상이 그리 좋지 않군. 일은 잘할 것 같지만 언어는 그다지 순화되지 않았던데.
B:그 사람은 아직 다듬어지지 않은 다이아몬드 같아. 조만간 좋아질 거야.
A rough diamond=
Diamond in the rough