血钻

blood diamond / conflict diamond

blood / colloquial pr. [xie3] / CL:滴[di1],片[pian4]

variant of 鑽|钻[zuan4]

to drill / to bore / to get into / to make one's way into / to enter (a hole) / to thread one's way through / to study intensively / to dig into / to curry favor for personal gain

an auger / diamond