What is this close-up picture? (WotsThat: Marble surface)

Question

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

FlintstoneJr · Accepted Answer

Marble surface. Marble has been prized for thousands of years, with ancient Romans using it to build everything from temples to aqueducts. Modern marble surfaces are still formed from metamorphic limestone that's been subjected to extreme heat and pressure deep within the earth.

Answer: Marble surface

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