What is this close-up picture? (WotsThat: White marble surface (macro))

Question

What object is shown in this zoomed-in close-up photo?

NeonFossil · Accepted Answer

White marble surface (macro). The purest white marble, like the Carrara marble Michelangelo famously used, gets its brightness from being made almost entirely of the mineral calcite with very few other trace minerals to discolour it.

Answer: White marble surface (macro)

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