Someone that is precious to you. Someone that has rare qualities.
Toby is such a diamond. He gave me a rose for no reason.
by TINY TINA March 28, 2005
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This is for use when something is beyond brilliant!
"We was down the pub an this chav gets his tracksuit pants ripped off on this nail... he's standin there in his all-together with his London Pride innis hands... it was Diamond!"

"What? She said yes? Diamond m8!"
by George Friendly October 13, 2006
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An over priced old rock that gets you laid until the effect wears off. Bigger is better.
My girlfriend wouldn't have anal sex with me until I gave her a diamond ring.
by jam June 23, 2003
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A building in the University of Sheffield. Meant for engineers but is often overtaken by communist humanities students
I tried to get a seat in the diamond but I couldn't due to all the communists
by Sensible STEM Student December 8, 2018
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She's somethin lik a gen stone lik the name she has a beautiful inside with an outside that looks so beautiful to the human eye in a way u can say she's perfect with an attitude that say bitch I have no filter she's great at everything she does and makes things look so easy to date a diamond u have to b patient and willing to admit when your wrong
by Mr.anonomys December 20, 2016
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