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
Sacoglossans t1_j9116fs wrote on February 18, 2023 at 12:21 PM Reply to comment by WormswithteethKandS in TIL that the gemstone jet, where the phrase 'jet black' comes from, is actually a form of coal. by ih8pkmn Ah mater, want Jet to always love me. Permalink Parent 2
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