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1.
A less commonly used term for a woman's vagina, or vaginal area.
"Does my sexiness upset you?
Does it come as a surprise
That I dance like I've got 'diamonds'
At the meeting of my thighs?" --Maya Angelou, Still I Rise

My boyfriend wants to use his dick to search my diamond mine.
by LakotaBabii June 18, 2008
5 2
 
2.
A less commonly used term for a woman's vagina, or vaginal area.
"Does my sexiness upset you?
Does it come as a surprise
That I dance like I've got 'diamonds'
At the meeting of my thighs?" --Maya Angelou, Still I Rise

My boyfriend wants to use his dick to search my diamond mine.
by LakotaBabii June 18, 2008
4 3
 
3.
A diamond mine occurs when while either recieving a blow-job or having intercourse, right before you blow your load you pull out and shoot it up your partners nose.
Man Becca gave good head, but I gave her something in return. A diamond mine!
by Jesse and John April 20, 2006
5 10