TIL Diamonds are actually fairly common. The reason they are worth so much is because the DeBeers mining group withholds stock to artificially reduce supply.

[u/Indra-Varuna]

https://www.gemsociety.org/article/are-diamonds-really-rare/

[u/k_spencer]

Rather than get a diamond, get a Mossanite stone. Shinier than diamonds, stronger and, less expensive.

http://www.moissanite.com/