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4 Carat Diamond Worth

A top quality, 4-carat diamond is incredibly uncommon, making the chance to buy a 4-carat diamond ring or other jewelry a once-in-a-lifetime experience.


The consensus among seasoned designers, gemologists, experts, and even amateurs is that a 4-carat diamond is substantial carat weight. For instance, the typical weight of a diamond engagement ring in Singapore is 3 carats; this ring is 3 carats heavier.

4 Carat Loose Diamond
Four engagement rings on a lovely hand, each finger wearing a large, clear, colorless diamond.

How Much Are 4 Carats of Diamonds Worth?

Depending on the diamond’s cut quality, clarity, and color, the average cost of a 4-carat diamond ring in Singapore can range from SGD 57,000 to SGD 150,000 or more. 4 carat loose diamonds can estimate at SGD 31,070. A diamond of this carat weight often costs more the better the quality.


The carat weight of a diamond is just one of four elements that determine its price, as we have discussed in our guide to the four Cs. The others include its color, clarity, and cut quality. Each of these factors significantly affects the cost of a diamond, especially when the stone is huge as a 4-carat diamond. It affects it because a 4-carat diamond may display characteristics like color, clarity, and cut quality more visibly than a smaller stone.

In other words, the cost of a 4-carat diamond varies according to its cut quality, clarity, and color, which are the other three Cs.


Therefore, to achieve the best value, we advise staying within the abovementioned parameters: color in the G-I range and a clarity grade in the VS1 or VS2 range.


A 4-carat diamond’s shape is the final variable that may impact its cost. The price of a 4-carat diamond in Singapore varies because it depends on its shape, with some shapes costing more per carat than others. For instance, a 4-carat diamond oval ring will cost more than a princess cut ring because it indicates the diamond’s carat weight, not its size.


There’s usually a 4-carat diamond size chart and certificate with measurements that provide a clearer idea of the 4-carat diamond size. A 4-carat diamond will appear larger or smaller depending on its form. As a result, the diamond’s size and price greatly impact the cut. Here are the different diamond cuts and lengths in the table below.


Diamond Cut

Size Range (mm)

Round cut

10.2 mm


Oval cut

13×8.5 mm


Marquise cut

16×8 mm


Cushion cut

10×8.5 mm


Princess cut

9 mm


Asscher cut

9 mm


Heart cut

10.3 mm


Are 4 Carats Too Big?

A 4-carat diamond is huge, yet the size is frequently only relevant in specific situations. It is a great carat weight for engagement rings and everyday jewelry when set properly, but it is also stunning enough to be saved for special occasions and evenings.


It would help if you inquired about the clarity of the diamond from your jeweler regardless of the carat weight you’re considering. Then, the grade of the diamond as a whole—which ultimately affects the price—considers these inclusions.

Is a 4-Carat Diamond a Good Investment?

Using 4-carat diamond rings in Singapore as an investment strategy has rapidly increased during the past several years. Compared to gold, it is a better investment due to several features. These elements consist of:

  • Size
  • Durability
  • Storability


 A diamond’s size is the first and most noticeable benefit over gold. Diamonds are much smaller than gold bullions and take up less space. Since ancient times, these priceless stones have been an excellent way to transport money. No matter how little, a diamond trinket costs twice as much as gold jewelry of the same size. Therefore, the size implies that diamond jewelry, such as necklaces or bangles, makes good investments.


Another benefit that diamonds have is their durability. It is the most difficult thing to do on Earth. But, it will certainly not suffer any damage. As long as you take proper care of your diamond jewelry, you won’t have to worry about it fading. You can use and enjoy your investment for as long as you choose.

You can also insure it if you are concerned about losing it. Like other tangible goods like gold, silver, and real estate, diamonds are likewise immune to inflation. However, diamond jewelry is a more transportable and long-lasting investment than other physical goods. Jewelry made from diamonds has financial advantages in addition to the psychological and physical factors that make them desirable investments.

Easy Storage

Easy storage comes in compact sizes. So much so that you may put a diamond in secure safe worth hundreds of thousands of dollars in Singapore. Diamond jewelry is another investment that may be seen, held, and worn. Many believe it to be safer than stocks and other digital investments.

Jewelry ring with diamond on wood background

What Is the Size of a 4-Carat Diamond?

The diameter of a diamond weighing 4 carats is roughly 10.1mm, or 0.4 inches, across its surface. However, the diameter of different diamond forms can vary depending on their shape and length-to-width ratio. Hence this calculation assumes the diamond is a brilliant round cut. See the illustration below to see how different shapes differ in size.

Depending on the cut, a 4-carat diamond will often have a diameter between 10.1mm and 10.3mm. For example, a 4.5-carat diamond will have a diameter of roughly 10.63mm compared to a 4.25-carat diamond’s approximate 10.43mm.


It’s possible to save thousands of dollars on 4-carat diamonds by negotiating better clarity and color at the actual size according to the cut. In Singapore, you can get the highest quality of Diamonds at the right measurement in Dianoche.


We at Dianoche are the best jewelry store in Singapore, where we provide the top services to our customers at pocket-friendly prices at the best diamond grades. To get into the best diamond team, kindly fill out the forms below. Also, you get to consult with our prominent gemologists free of charge.

Beautiful diamond engagement ring

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Need help in finding the perfect jewelry? Fill the form below and one of our experts will contact you. 

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Fill the form below and one of our experts will contact you.

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