I see people auctioning things all the time, and once someone auctioned a water block, then someone won the auction with 27 diamonds. 27?!?!? How do you get that many?!?! The only way I know of to get diamonds is from voting and getting lucky (I have gotten one from that), but 27?!? I could use some help!
250 donors get a kit called diamond which goes them 3 diamonds. Otherwise, just save up and you might have one soon!