“While you talked?” Mr. Durand bowed. “And looked at the diamond?” Mr. Durand bowed for the second time. “Had you ever seen so fine a diamond before?” “No.” “Yet you deal in precious stones?” “That is my business.” “And are regarded as a judge of them?” “I have that reputation.” “Mr. Durand, would you know this diamond if you saw it?” “I certainly should.” “The setting was an uncommon one, I hear.” “Quite an unusual one.” The inspector opened his hand. “Is this the article?” “Good God! Where—” “Don’t you know?” “I do not.” The inspector eyed him gravely.