I suppose you know what you have got ?" "A diamond, sir?
A precious stone.

It cuts into glass as though it were putty." "It's more than a precious stone.

It is the precious stone." "Not the Countess of Morcar's blue carbuncle!" I ejaculated.
"Precisely so.

I ought to know its size and shape, seeing that I have read the advertisement about it in The Times every day lately.

It is absolutely unique, and its value can only be conjectured, but the reward offered of 1000 pounds is certainly not within a twentieth part of the market price." "A thousand pounds! Great Lord of mercy!" The commissionaire plumped down into a chair and stared from one to the other of us.
"That is the reward, and I have reason to know that there are sentimental considerations in the background which would induce the Countess to part with half her fortune if she could but recover the gem." "It was lost, if I remember aright, at the Hotel Cosmopolitan," I remarked.
"Precisely so, on December 22nd, just five days ago.