Broken shards of glass commonly found in the parking lots of inner city neighborhoods. They are from thieves crow-barring your car windows, not bad driving.
Schmulovitz: "Oy vey, I thought the temple was around here somewhere. I think we've stumbled into the wrong neighborhood."

Avner: "I think you're right. Look at that parking lot. There's ghetto diamonds everywhere, and not the conflict-free kind!"

Schmulovitz: "I bet you those black guys are going to try and kill me. Please, don't hurt my body. Rape! Rape!"
by thatnibbadeebo July 10, 2017
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A broken diamond held together by duct tape; commonly used as a drinking vessel for grape soda
"Yo have you seen my ghetto diamond. I'm firsty."
by Dr. Fartbrain December 28, 2011
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