ANSWERS: 3
  • Steel wool or sandpaper wouldn't scratch a diamond but would scratch the other things given. +3
  • i believe you can use corn syrup to determine if a diamond is real because the refraction is the same or very nearly the same. if you put a diamond into the corn syrup it will be invisible. not sure if its true saw it on science channel a while back.
  • Try to scratch it. Rub it against an emerald and see which one is ruined. Or just with a metal file, that would work too.

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