Mega Black Sand Magnet Joanne, Greg, and Azu Dueck, Canada. Years ago I purchased one of those little spring loaded push button magnets to remove the black sand . Dealing with Black Sands: getting all the gold out of your ... Black sands are heavy, which is why they collect in your pan, dry washer or sluice. ... The smaller fraction may have some nonmagnetic black sand... Bulk Black Sand ...