A crazy 2 carat diamond ring

  I heard from my wife that one of her male friends has just proposed. What he brought in front of his girlfriend was a diamond ring, a 2-carat diamond ring! That's super crazy!Do you have any concept about a 2 carat diamond ring? I mean not only in term of size, but more importantly in term of price! When I was young and studied Mathematics in secondary school, there was a topic called "Ratio". I remembered there was a word question which impressed me. The question is something like that : "Mary has brought a diamond for 5000 dollars, Wendy has brought another diamond with the size double of that of Mary. It is known that price of a diamond varies with the square of the size, what's the price of the Wendy's diamond?" Then I knew big diamond are very rare. This was the first concept of the diamond price. I searched from web that 1 carat "D" diamond worth about HKD60,000. Can you calculate the price of 2-carat one for me?

  2-carat-diamond is overwhelming huge. I believed his girlfriend should be overwhelmingly surprised. I cannot imagine after she calmed down and try to figure out the price, how mixed feelings she will have. When I talked about propose ring with my friends in the past, one of my friend said: "Do not feel any pressure from it. It's up to her and up to you. If you are sincere enough, a coke ring is also OK!" "It's romantic!It can draw the sympathy of a kindhearted girl." I laughed. May be there are different meanings behind various ring size. Let talk about this next time.