I thought that he was glib with his tale for a man who had such a poor one; and certainly he looked me in the face with amazing readiness. He had not the eyes of a rogue, and his manner was not that of one criminally restless. "If you will allow me," I said, when I had looked at the stone for a few moments, "I will examine this under the brighter light there; perhaps you would like to amuse yourself with this parcel of rubies." This was a favorite little trick of mine. I had two or three parcels of stones to show to any man who came to me laboring under a sorry and palpably poor story; and one of these I then took from my desk and spread upon the table under the eyes of the Russian. The stones were all imitation, and worth no more than sixpence apiece. If he were a judge, he would discover the cheat at the first sight of them; if he were a swindler, he would endeavor to steal them. In either case the test was useful. And I took care to turn my back upon him while I examined the opal, to give him every opportunity of filling his pockets should he choose. When I had the jewel under the powerful light of an unshaded incandescent lamp I could see that it merited all the appreciation I had bestowed upon it at first sight. It was flawless, wanting the demerit of a single mark which could be pointed to in depreciation of its price. For play of color and radiating generosity of hues, I have already said that no man[ 15] has seen its equal. I put it in the scales, called Michel to establish my own opinions, tried it by every test that can be applied to a gem so fragile and so readily harmed, and came to the only conclusion possible—that it was a stone which would make a sensation in any market, and call bids from all the courts in Europe. It remained for me to learn the history of it, and with that I went back to my desk and resumed the conversation, first glancing at the sham parcel of rubies, to find that the man had not even looked at them. [ 15] "It is a remarkable opal," I said; "the finest ever put before me. You have come here to sell it, I presume?" "Exactly. I want five thousand pounds for it." "And if I make you a bid you are prepared to furnish me with the history both of it and of yourself?"