Of all the four Cs of diamond grading, carat weight should be the easiest to understand, right? A diamond weighs a certain amount and that’s it. The greater the carat weight, the more the diamond will cost. Well, yes but it’s not quite that simple. Like pretty much everything else in the diamond world, it’s a little more complicated than it sounds. So how does carat weight affect the value of a diamond? And what exactly is a carat? Is it different from a karat? Or a carrot? Whether you’re selling some diamond jewelry, or you’re in the market for a new diamond, we at Diamond Lighthouse feel it’s important for you to understand each of the four Cs and how they affect a diamond’s price.