When Sadie’s husband dies, she has only $25,000 to her name.  After all the expenses are paid, she tells her closest friend Ruth that she has no money left.

Ruth says, "How can that be, Sadie?  You told me you had $25,000 just a few days before Maurice died.  How can you now be broke?"

Sadie replies, "Well to tell you the truth, Maurice and I were not paid up members of any synagogue.  So the funeral cost me $5,000, the hospital bill came to $3,000 and of course, I had to make the obligatory donation to the synagogue, another $3,000.  All the rest went on the memorial stone."

Ruth does some silent calculating and then says, "$14,000 for the memorial stone?  My God, Sadie, how big was it?"

Extending her left hand, Sadie replies, "Three and a half carats."