p of
experimental chemistry at a northern university. The third bequeathed
the Moonstone as a birthday present to his niece, on condition that
my father would act as executor. My father at first refused to act. On
second thoughts, however, he gave way, partly because he was assured
that the executorship would involve him in no trouble; partly because
Mr. Bruff suggested, in Rachel's interest, that the Diamond might be
worth something, after all."

"Did the Colonel give any reason, sir," I inquired, "why he left the
Diamond to Miss Rachel?"

"He not only gave the reason--he had the reason written in his
will," said Mr. Franklin. "I have got an extract, which you shall see
presently. Don't be slovenly-minded, Betteredge! One thing at a time.
You have heard about the Colonel's Will; now you must hear what happened
after the Colonel's death. It was formally necessary to have the Diamond
valued, before the Will could be proved. All the jewellers consulted,
at once confirmed the Colonel's assertion that he possessed one of the
largest diamonds in the world. The question of accurately valuing it
presented some serious difficulties. Its size made it a phenomenon in
the diamond market; its colour placed it in a category by itself; and,
to add to these elements of uncertainty, there was a defect, in the
shape of a flaw, in the very heart of the stone. Even with this last
serious draw-back, however, the lowest of the various estimates given
was twenty thousand pounds. Conceive my father's astonishment! He had
been within a hair's-breadth of refusing to act as executor, and of
allowing this magnificent jewel to be lost to the family. The interest
he took in the matter now, induced him to open the sealed instructions
which had been deposited with the Diamond. Mr. Bruff showed this
document to me, with the other papers; and it suggests (to my mind)
a clue to the nature of the conspiracy which threatened the Colonel's
life."

"Then you do believe, sir," I said, "that there was a conspiracy?"

"Not possessing my father's excellent common sense," answered Mr.
Franklin, "I believe the Colonel's life was threatened, exactly as the
Colonel said. The sealed instructions, as I think, explain how it was
that he died, after all, quietly in his bed. In the event of his death
by violence (that is to say, in the absence of the regular letter from
him at the appointed date), my father was then directed to send the
Moonstone secretly to Amster