It would not occur to him to try to sell them to whites, of course, since the whites already had plenty of glass beads, and more fashionably shaped, too, than these; but one would think that the poorer sort of black, who could not afford real glass, would have been humbly content to decorate himself with the imitation, and that presently the white trader would notice the things, and dimly suspect, and carry some of them home, and find out what they were, and at once empty a multitude of fortune-hunters into Africa.

There are many strange things in human history; one of the strangest is that the sparkling diamonds laid there so long without exciting any one's interest.
The revelation came at last by accident.

In a Boer's hut out in the wide solitude of the plains, a traveling stranger noticed a child playing with a bright object, and was told it was a piece of glass which had been found in the veldt.

The stranger bought it for a trifle and carried it away; and being without honor, made another stranger believe it was a diamond, and so got $125 out of him for it, and was as pleased with himself as if he had done a righteous thing.

In Paris the wronged stranger sold it to a pawnshop for $10,000, who sold it to a countess for $90,000, who sold it to a brewer for $800;000, who traded it to a king for a dukedom and a pedigree, and the king "put it up the spout." -- [handwritten note: "From the Greek meaning 'pawned it.'" M.T.]--I know these particulars to be correct.
The news flew around, and the South African diamond-boom began.