"Which key was used to open it?" he asked.
"That which my son himself indicated--that of the cupboard of the
lumber-room."
"Have you it here?"
"That is it on the dressing-table."
Sherlock Holmes took it up and opened the bureau.
"It is a noiseless lock," said he. "It is no wonder that it did
not wake you. This case, I presume, contains the coronet. We must
have a look at it." He opened the case, and taking out the diadem
he laid it upon the table. It was a magnificent specimen of the
jeweller's art, and the thirty-six stones were the finest that I
have ever seen. At one side of the coronet was a cracked edge,
where a corner holding three gems had been torn away.
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