Regardless of whether you are planning to propose or celebrate an anniversary with your missus, choosing a four carat diamond ring with a round brilliant-cut stone can help you express your feelings in truly romantic fashion. It is not always that you get to purchase something valuable and expensive for your loved one. If you are planning something like this, you should be armed with a fair idea regarding the price of a 4 carat diamond ring. In general, the price of a diamond depends on the cut, clarity, carat weight, and color of the stone. They are collectively called the 4C’s of the diamond. Although these factors influence the ring’s cost, one can only get an estimate of the price based on the variables. After all, what you end up paying would depend on the specifications you are looking for, and there is a broad range of those, even with a 4 carat diamond. The price of a diamond ring featuring a D-colored and Internally Flawless diamond, can conceivably come up to half a million dollars. Such diamonds do exist, and are rare enough to justify their steep prices. If you can bear the expense, then what better way to celebrate the occasion than to make a purchase? If you are budget conscious though, you may want to look for options with much lighter price tags.