The price of a diamond depends on many factors. First and foremost, the properties of the stone itself: weight, colour, purity and cut quality. Then there is also the diamond rate, which constantly fluctuates. Other factors that play a role are supply and demand on the world market, the economic situation, the market strategy of De Beers, etc. Thus, we can not give a concrete answer to the question, "what does a diamond cost?", but the fact remains that the diamond price shows a constant rise over the years.