This good night short story will make you think - Who is a fool?

Read this short story at bed and let me know who is a fool!

Can you guess in this short story who is a fool?

Well they said, "He who asks a question is a fool for five minutes, he who does not ask a question remains a fool forever."

An illiterate villager had put up a stall of glass pieces in a village fair. Different kinds of glass pieces and glass ornaments were displayed at the stall. A jeweler had also come to the fair. A glass piece at the stall caught his attention. It was the most glittering piece of glass. Jeweler judged it to be a valuable diamond. But, he asked the shopkeeper, “Brother! What is the price of glass?” The shopkeeper replied, “Twenty cents.” Trying to negotiate, the jeweler put the price fifteen cents. But the shopkeeper did not agree to the price. The jeweler thought. “I’ll come a little later. Who will buy this piece and the shopkeeper would also be ready to sell it at fifteen cents.”

A little later, the jeweler returned to the shop. The diamond was not there. He asked the shopkeeper, “Where is that piece of glass?”  The shopkeeper replied, “I have sold it for twenty five rupees.” Beating the brow, the jeweler said, “O fool! You have sold a diamond worth one and a quarter thousands of dollars.”  The shopkeeper said, “I’m not a fool. I found that glass of piece on the road for free and I got twenty five cents for that. You knew it was quite valuable, still you stick to fifteen cents. Then who is the fool?”

Let me know who is fool in the comment box.