1) they expensive bruh 2) none of us kno the dif btwn a fucking diamond and some fancy ass glass ur capitalist rock hierarchy has no control over us

3) mostly mined with slave labor

4) Diamonds have no intrinsic value and are only expensive because of the global diamond monopoly held by the De Beers Company that has been scamming people for decades into believing diamonds were a rare and precious commodity.

5) there are so many other gorgeous stones for a fraction of the cost without any of the above drawbacks