Excellent program last night on “Peace of Africa” dredging up 400
tons of gravel/hour to find 57 carats of diamonds.
Could you please explain the “magnetism” of diamonds? We were told
that they are naturally magnetic and so iron filings are attached to
them in the milling process which gives them extra weight. Then a
"flotation" process like gold panning is used to separate the heavy
iron-diamond stones from the rest.