Diamond Price per Gram: Learn The Value and How To Calculate

Last Updated on July 27, 2022

Diamonds are one of the most popular gemstones in the world and have been treasured since ancient times. They are known for their incredible hardness and durability, as well as their sparkling beauty.

The price of diamonds is often measured per carat (ct), with one carat being equal to 0.2 grams. The average price of a diamond per carat is around $2,000, but this can vary significantly depending on the quality and size of the stone.

If you’re interested in purchasing a diamond, it’s important to be aware of the price per gram so that you can budget accordingly. Here’s a look at the average price of diamonds per gram, as well as some factors that can affect the cost.

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Diamond Price per Gram: How To Calculate?

Diamond prices vary widely based on a diamond’s form, cut quality, clarity, and color. For instance, the price of a one-carat diamond might range from $1,500 to more than $16,000 for an exceptionally well cut, high quality diamond. A two-carat diamond may cost anywhere from $6,000 to $80,000 depending on its form, cut, clarity and color grades.

For the 5-carat stone, we can safely say that the most affordable 5-carat (1 gram) diamond costs $39600, while the most costly is $395600.

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Diamond prices are so variable that it’s nearly impossible to give a precise price estimate for diamonds as a whole. The four Cs—cut quality, clarity, color, and carat weight—are the most important of these. In other words, the higher the quality of a diamond, the more you’ll have to spend for.

As the total weight of a diamond rises, so does its value per carat. In other words, the greater the carat weight of a diamond, the more money you’ll need to pay per carat to buy it.

As a result, diamond prices rise geometrically as weight rises, since their costs increase both owing to the greater weight and owing to the higher price per carat for the heavier weights.

Why 2 Carat Diamond Isn’t Priced 2x of a 1 Carat?

Diamonds are a rare commodity, and the bigger they are, the more valuable! A low-quality 1-carat diamond might cost as little as $2000, whereas a top 1-carat stone may cost upwards of $15000 for a bright cut, highly clear clarity, and beautiful form.

If you include low-quality grades (color & clarity) as well as high-grade diamonds, the cost can range from +$44,000 to $6000.

Is Diamond More Expensive than Gold?

Diamonds are far more costly than gold. Red diamonds, on the other hand, are quite unusual on Earth. Only 30 of them have been found so far, and the majority weigh less than half a carat (about 0.1 grams). They’re precious, and a gram might set you back $5 million.

Is It True That Diamond Prices Rise Over Time?

The cost of a single carat of diamonds has risen at an average annual rate of 4% over the last ten years. This appears to be in line with inflation.

However, regardless of how much a diamond’s retail price rises over time, it does not guarantee that the diamond will have strong resale value. Unfortunately, the resale market is sluggish.

The value of your purchase has already dropped as soon as you acquire the stone. You won’t be able to sell a diamond for anything close to what you paid for.

What Are The Factors That Affect Diamond Pricing?

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It’s a complicated subject that has numerous variables, but there are a few things you should know. When it comes to diamonds, several elements combine to produce the ultimate cost.


The “Cut” is the most essential component of a diamond’s quality that influences its beauty. Diamond Cut refers to the precision of a diamond’s angles, proportions, symmetrical facets, gleam, fire, scintillation, and finishing characteristics. These elements greatly influence how well a diamond glimmers and its overall visual appeal.

A cutter may aim for the greatest Carat weight at times, leaving the diamond too deep or shallow for optimal light reflection. A diamond may be cut to reduce the number of inclusions while maintaining optimum clarity, but this reduces its sparkle. Even an Ideal cut diamond may have a yellow tinge that is too obvious and detracts from its splendor.


Internal characteristics are sometimes known as inclusions, while external ones are referred to as blemishes. Diamonds with inclusions or flaws are uncommon, although most properties may only be recognized using a magnifying glass.

These flaws, both large and small, can obstruct light passing through the diamond. When this happens, the diamond’s luster and beauty are dulled, detracting from its high-quality Cut.


The color of a diamond is graded by the purity of its white or colorless hue. The GIA classifies diamonds from D to Z, with D being the whitest and Z having a visible brown or yellow tint.

The grade of a diamond influences the cost considerably. The naked eye is generally unable to differentiate between two adjacent color graded diamonds, although the price difference may be significant.


The physical weight of a diamond, also known as its carat weight, is measured in metric carats. One carat is equal to 1/5 gram and is divided into 100 points. The 4Cs’ most objective grade is the carat weight.

A single 1 Carat Diamond weighs approximately the same as a quarter of a raisin, and it has 200 milligrams in terms of weight. Two 1 Carat Diamonds may look very different depending on the Diamond Shape and how they are cut.

How They Work Together?

Each of the four C’s contributes to the overall beauty of a diamond and makes each stone different. A Diamond, on the other hand, should be considered as a whole entity. Because the eye finds it difficult to distinguish one diamond feature from another, such as clarity or color, it’s important to consider how the four C’s interact.

Jackie Palmer is a Houston-based coin journalist and fashion enthusiast. She joined Jewels Advisor’s content team after years of experience as a content strategist, managing blogs and social channels for local stores. Jackie mostly collects and studies US coins produced during the 20th century and over the years, published hundreds of articles for multiple coin publications.