When we are dealing with diamonds, the first and the foremost factor that justifies the valuable stone’s price is the carat weight (widely shown as ct.). Carat is the unit of weight and size of the afore mentioned precious stone, which is originated from the carob seed, the original units of measuring for diamond traders in the olden times. In this modern day and age, a carat is equal to the exact 0.2 grams, which is roughly has the same weight as a paper clip. Carat weight, however, has no relation with the similar sounding word karat, which refers to the unit of measure for gold’s purity.
While there are many variables such as cut, color, and clarity that will have the impact on the overall desirability a diamond has to hold, the carat of the diamond is the one that has the major impact in determining the price. The reason of this logic is because the carat signifies the actual weight of the diamond itself, where the diamond weight is are referred as the one of the primary indicator for the rarity of the diamond itself. The heavier the diamond is, the more expensive the cost it would be.
Keep in mind that while the term carat refers to the weight of a diamond, it does not direct to the dimension or the shape of the diamond. Since the diamond can be cut specifically to look larger from the actual size through increasing the diameter and decreasing the depth, along with other cutting techniques, the measure unit for the diamond’s weight is measured through carat weight. Which is why, the term carat meaning is just referencing on the actual weight of the diamond, nothing more, and nothing less.
Be aware that while the diamonds pricing is based on the carat weight of the precious stone, the pricing is not priced on the whole weight of the diamond. Instead, they are priced with a per-carat system. This means, if you are buying a 3 carat diamond ring with the price of $7,500 for one carat, you have to pay $22,500 ($7,500 times 3) for your engagement ring. The reason why the diamonds using this type pricing is because the fact that the rough stone for larger, heavier diamond gemstone is rarer than the rough stones of the smaller, lighter diamonds. This is why, the heavier a diamond is, the more expensive the price will be.