[bluGill]

Though if you are interested in investment grade diamods I'd say it is time to get out - diamonds have never been as rare as investors like to pretend, and things are going to get worse.

[canucker2016]

Diamonds have been used as plot devices in movies and TV shows as a liquid asset for criminals.

*Spoiler Alerts*

Marathon Man (don't watch if you're squeamish about dental practices) with Dustin Hoffman and Laurence Olivier. see https://en.wikipedia.org/wiki/Marathon_Man_(film)

Also the 2021 Irish/Belgium TV series, Hidden Assets, involves diamonds.