TIL that the gemstone jet, where the phrase 'jet black' comes from, is actually a form of coal. en.wikipedia.org Submitted by ih8pkmn t3_1157pdm on February 18, 2023 at 5:21 AM in todayilearned 13 comments 201
La-Belle-Gigi t1_j9076w6 wrote on February 18, 2023 at 5:42 AM So what I got in my Christmas stocking is coal? I thought I was being the good kind of "naughty"... then again, it's still jewelry. Permalink 5
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