rough diamond

Someone or something that is unrefined but has many exceptional aspects or underlying potential. Primarily heard in UK, Australia. The young actor was a rough diamond. With some training, she'd become a superstar.

Common Names:

Name	Pronounced	Usage
Damocles	DAM-ə-kleez (English)	Greek Mythology (Latinized)
Busby	['hʌzbi]
Eleanore	EL-ə-nawr	English
Ailie	['eili]
Denise	[də'ni:z]
Tilda	['tildə]