With the theme 'hard' I thought of diamonds, but all mine are at the pawn shop. No matter, as most record styli have a diamond tip, though typically only measuring .004 x .007 mm.
This was a devil to blip, as the dof was tricky and the stylus kept picking up tiny hairs or bits of fluff, despite constant cleaning.
For anyone interested, the album was 'Frank Ifield yodels The Mars Volta (B sides.)`

Many thanks to ApolloFly for hosting. 

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