a rough diamond

(British & Australian) also a diamond in the rough (American & Australian)

a person who does not seem very polite or well educated at first, although they have a good character Mitchell may have been a rough diamond, but he was absolutely loyal to his employer.

Common Names:

Name	Pronounced	Usage
Sanford	['sænfəd]
Mimmi	MEEM-mee	Swedish, Finnish
Caryl	KER-əl, KAR-əl	English
Vega	['vi:gə]
KajetÁN	-	Czech, Slovak, Hungarian
Carme (1)	KAR-me (Galician)	Galician, Catalan