Faux fur or faux pas? Not so fast. Some say fake fur is okay to wear. Others view second-hand real fur as fine too. For activists, the animal product remains divisive even as it is back in style.

Do you have an old fur coat tucked away in your closet? You might be sitting on more value than you think. Whether it’s a vintage fur coat with sentimental ties or simply a piece you’ve outgrown, ...