An acquaintance of mine whose daughter was about to be married decided to give her a diamond ring that had been in the family for several generations.  The stone had never been appraised, so the father asked a gemologist friend if she would take a look at it.  She agreed, but said that instead of a fee she'd accept lunch at one of Houston's finer restaurants.

A few days later, as he and the gem expert sat sipping a glass of Chablis, he showed her the ring.  She took out her jeweler's loupe, examined the diamond carefully and handed it back.

"Wow," said a diner who had been watching from the next table.  "These Texas women are tough!"