rough diamond

noun

1. an unpolished diamond
2. an intrinsically trustworthy or good person with uncouth manners or dress

Example Sentences

According to the Daily Mail, the diamond was cut from a 236-carat rough diamond found in Botswana.

From The Daily Beast

Joseph Mylchreest was a Manxman, a rough diamond but a man of sterling worth.

From Project Gutenberg

The soul is placed in the body like a rough diamond, and must be polished, or the lustre of it will never appear.

From Project Gutenberg

I dislike him, in spite of Aunt Betty calling him a rough diamond; but of course I wouldn't see him robbed or cheated.'

From Project Gutenberg

But he was studying, and he soon attracted the attention of the head of the business, who called him "a rough diamond."

From Project Gutenberg

If anyone seeks a polished crystal and finds a rough diamond, he is vexed; he does not recognise its value.

From Project Gutenberg