What is this close-up picture? (WotsThat: Third finger ring texture (macro))

Question

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

PixelLynx · Accepted Answer

Third finger ring texture (macro). The tradition of wearing a wedding ring on the third finger of the left hand comes from an old belief, dating back to ancient Rome, that a vein in that finger ran directly to the heart.

Answer: Third finger ring texture (macro)

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