Diamond Carat Weight

Instead of grams or kilos, diamonds are weighed in carats (not to be confused with gold’s Karat which signifies purity). This simply denotes a measuring scale where each 1 carat = 0.2 grams (0.50 carat = 0.1 gram and 5 carats = 1 gram).

More About Diamond Carat Weight

When it comes to buying a diamond, one of the most important factors to consider is the carat weight. Carat weight refers to the size of a diamond, but it’s important to understand that carat weight is not the same thing as size. A diamond’s size is determined by its dimensions, while carat weight is determined by the weight of the diamond. In this article, we’ll take a closer look at diamond carat weight and what it means for your diamond buying experience.

What is a Carat?

The term “carat” is derived from the carob seed, which was used as a unit of weight in ancient times. Today, a carat is defined as 0.2 grams, or 200 milligrams. This standard was established in 1913 by the International Committee on Weights and Measures.

When it comes to diamonds, carat weight is a measure of a diamond’s weight, not its size. In general, larger diamonds are heavier, but the size of a diamond also depends on its shape and cut. So, for example, a 1-carat round brilliant cut diamond may appear larger than a 1-carat marquise cut diamond, even though they both weigh the same.

The Relationship Between Carat Weight and Price

Diamonds are priced per carat, and the price per carat increases as the carat weight of the diamond increases. This is because larger diamonds are more rare and more desirable, so they command a higher price. However, the relationship between carat weight and price is not linear. For example, a 2-carat diamond will be more expensive than two 1-carat diamonds of similar quality, but it will not be twice as expensive.

This is because larger diamonds are more rare, but they are also more difficult to cut and polish. As a result, there is more waste in the cutting process, which adds to the cost of the diamond. In addition, larger diamonds are often more in demand, which drives up their price.

How Carat Weight Affects a Diamond’s Appearance

Carat weight is one of the most important factors in a diamond’s appearance, but it’s not the only factor. A diamond’s cut, color, and clarity also play a role in its overall beauty. In general, larger diamonds will have more sparkle and brilliance, but a well-cut diamond of a smaller carat weight can still be stunning.

It’s also important to note that a diamond’s appearance can vary depending on the shape of the diamond. For example, a round brilliant cut diamond will have more sparkle and fire than a marquise cut diamond of the same carat weight.

Choosing the Right Carat Weight for Your Diamond

When choosing the right carat weight for your diamond, it’s important to consider your budget and your personal preferences. If you’re on a tight budget, you may need to compromise on carat weight in order to get a diamond with a higher cut, color, and clarity grade.

If you’re looking for a diamond that makes a statement, a larger carat weight may be more desirable. However, keep in mind that larger diamonds can also be more difficult to wear on a daily basis, especially if you have an active lifestyle.

Ultimately, the right carat weight for your diamond is a matter of personal preference. Take the time to evaluate your options and choose a diamond that makes you happy and fits within your budget.


Carat weight is an important factor to consider when buying a diamond, but it’s not the only factor. The right carat weight for your diamond will depend on your budget, your personal preferences, and the other factors that contribute to a diamond’s overall beauty.