the cost of a high quality,1 carat diamond is runs between $4.5K to $17K+. 1 carat = 2 grams.Buy a bottle of water? 16 oz would be 453 grams. If you pay a buck for a bottle of water, 2 grams would be less than a penny. Human survival is not as profitable as diamonds, although Nestles would show they are working on that.