Joke -- The Cheap Ring

A young woman walked into a jeweller first thing one Monday morning, handed a large impressive solitaire ring to the owner, and asked could he "just tell her whether this is a real diamond or not, and is it worth having valued" as a very good friend had given it to her over the weekend. The jeweller could tell without from a distance that it was only in a cheap 9 carat gold mount, and a quick look using an eyeglass not only confirmed this, having a "375" hallmark, but also revealed a "C.Z." stamp, so was undoubtedly a cubic zirconia.
The jeweller relayed his opinion to the "customer", who promptly burst out into tears, wailing, gnashing of teeth, and other hysterical behaviour. After five minutes she had recovered her composure sufficiently to further quiz the jeweller, "How can you be so sure after such a brief look, you haven't even tested the stone", she said accusingly. "Madam, from years of experience, I can tell diamonds from fakes without using a diamond tester, they are only used by amateurs, it is only in a 9 carat mount, and nobody in their right mind would set a high quality 4 carat diamond in such a cheap mount, it's also stamped C.Z. inside the shank, so please do not call my expertise into question, especially when I am giving you free advice", replied the long-suffering jeweller. At this the woman burst back into uncontrollable sobbing, and it took several minutes before the jeweller could manage to communicate with her. "Well, dear, don't get so upset. As you were given it, you haven't suffered any financial loss. If this were a real diamond ring it would be worth £40,000 or more, at least you haven't bought it on ebay for £20,000; if you had I could quite understand you being so upset, but as it was only a gift, then really you have not lost anything," he tried to console her.
At this point she snatched the ring from his hand, and snarled "You clearly don't understand the seriousness of the situation! I insist you call the police immediately."
"Why?", said the puzzled jeweller.
Isn't it obvious?, said the woman, "I've been raped!"