Top Definition
The tiny shards of glass left in the street and sidewalk after a car window is broken by a thief, usually to steal contents from the car and sell them for drug money.
I didn't want to park on that block when I saw a pile of Baltimore Diamonds in the empty space.

I just finished vacuuming a bunch of Baltimore Diamonds out of my backseat.
by H. L. Mencken July 17, 2009

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