Will my mole scar heal? (photo)

I had a mole removed about 4 weeks ago. The pathology report showed that it was benign. The doctor removed the mole by a shave excision but let it head by itself and did not put any sutra in. It's been 4 weeks and the area shows no healing it is still a scar spot that looks black. What can this be? Will it ever heal?

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