According to market research, most diamond shoppers in the US prefer an engagement ring whose center can accommodate a 1-carat diamond. Buyers in other countries prefer a ring center size that can hold a 0.5- to 1.00-carat diamond. But as you shall find out, the situation is not as cut and dried as it sounds.
In many countries, the ideal carat weight of a diamond depends on the shoppers’ levels of income. However, it’s generally observed that a 1-carat diamond offers the best return for your money.
First, a 1-carat diamond is not too big to draw undue attention to yourself; neither is it too small to be invisible. It is the right size for those who do not find a 0.5- or 1.5-carat stone appealing or affordable. Also, 1-carat diamonds tend to be reasonably priced. You should note that diamond prices increase exponentially as opposed to linearly. For instance, a 3-carat diamond maybe five times as much as a 1-carat diamond, even if they are similar in all other aspects.
However, the choice of diamonds based on their carat weight is not always economical. In terms of size, you may discover that a 0.9-carat stone looks nearly as big as a 1-carat diamond but could be up to 35% cheaper. As is evident, the price relationship does not correlate with the 10% reduction in weight.
Size does matter when shopping for diamonds. Experts believe that size ought not to be viewed only from an economic standpoint since diamond prices vary exponentially. Instead, you should always consider the fire and brilliance of the stone you desire; this is where the other elements of the Four Cs come into play.