Hard Facts (The Mohs Scale Song)

[Verse 1] Let’s line them up from soft to tough, Ten little steps, that’s hard enough. We’ll start right down where scratching’s easy, Work our way up, slow and steady. Number one, soft as can be, Talc goes first, that’s the key. Number two won’t fight your nail, Gypsum comes next on the scale. [Chorus] One is Talc, two Gypsum, three Calcite, Four Fluorite shining bright. Five Apatite, six Feldspar, Seven Quartz scratches glass so far. Eight Topaz, nine Corundum strong, Ten is Diamond—hardest one! That’s the Mohs scale, one to ten, Say it now, then say it again. [Verse 2] Calcite’s three, it marks with ease, Fluorite four—bright crystal sheen. Five is Apatite, teeth and bone, Six Feldspar fills the stone you own. Seven Quartz, now things get tough, Glass won’t win—it’s scratched enough. If it cuts what came before, You know the number’s climbing more. [Chorus] One is Talc, two Gypsum, three Calcite, Four Fluorite shining bright. Five Apatite, six Feldspar, Seven Quartz scratches glass so far. Eight Topaz, nine Corundum strong, Ten is Diamond—hardest one! That’s the Mohs scale, one to ten, Say it now, then say it again. [Bridge] Topaz eight, sharp and clean, Corundum nine—ruby, sapphire sheen. Diamond ten sits at the top, Nothing scratches it—nothing stops. [Final Chorus] One is Talc, two Gypsum, three Calcite, Four Fluorite shining bright. Five Apatite, six Feldspar, Seven Quartz scratches glass so far. Eight Topaz, nine Corundum strong, Ten is Diamond—hardest one! Soft to hard, remember when— That’s the Mohs scale, one to ten.