A case of sharp eyed jeweller …

A shop assistant in a gem retailer demonstrates valuable antique rings to an imminent client, an American, when one of the gems disappears. The client's pant turn-ups are checked and he ie even taken to an inward space for a more careful inquiry. In any case, it isn't found. Another client – this time a lady – strolls in and after some easygoing request she swings to withdraw when the salesman requests that her stop. The missing property is found on her individual.
In this investigator story, the criminologist isn't "an unprecedented individual, uncommonly supported by fortune" yet "only a standard man who utilizes his eyes and his good judgment to the full".
There are pieces of information cunningly laid throughout the story so you also can be an analyst in the event that you so wish. So when the shop partner discloses to his thankful manager how he distinguished the wrongdoing, it doesn't thoroughly amaze us. In any case, did we envision him? All things considered, it relies upon how painstakingly we took after the leads.