When it comes to diamonds, opinions vary between “the bigger, the better” and the belief that less is more. However, is there an objective standpoint on the optimal carat size for a diamond ring? Can scientific or expert opinions guide us in forming an informed decision?
These questions can be perplexing, especially considering that preferences are subjective and vary from person to person. Nonetheless, if you seek information to make an educated choice when purchasing a ring, these insights can be invaluable.
That’s where we come in—to provide you with valuable information about diamond carat size and its impact on the appearance of your ring, as well as practical considerations when wearing one.
So, fasten your seatbelt, and let’s delve into the topic at hand!
Diamond Price Chart
DESIGN YOUR OWN ENGAGEMENT RING: START WITH A SETTING OR START WITH A DIAMOND. IT’S REALLY UP TO YOU!
Shape | Top Quality D/E, FL/IF | Our Recommendation G/H, VS2/SI | The Lower End I/J SI1/SI2 |
---|---|---|---|
Round | $23,200 | $7,710 | $6,100 |
Princess | $15,200 | $6,280 | $5,000 |
Cushion | $15,790 | $5,870 | $3,730 |
Emerald | $16,050 | $7,760 | $5,140 |
Oval | $18,950 | $7,390 | $5,760 |
Pear | $17,800 | $7,580 | $5,710 |
Marquise | $21,320 | $9,210 | $5,150 |
Radiant | $20,100 | $7,020 | $4,100 |
Asscher | $19,610 | $7,720 | $4,360 |

Diamonds And Carats – How Do They Connect?
We are familiar with karats when it comes to gold, where they denote the purity of the metal. However, in the context of diamonds, carats have a different meaning altogether.
Unlike gold, carats for diamonds do not define their purity or the number of inclusions but rather refer to their weight. For instance, a one-carat diamond weighs 200 milligrams, equivalent to 0.2 grams. It may be tiny, but its price is far from small.
Diamonds are renowned for being expensive, and this holds true even for a one-carat diamond. The price range for such diamonds can vary greatly, ranging from $1,800 to $12,000, primarily influenced by the Four C’s—cut, color, clarity, and carat weight. Additionally, the diamond’s shape plays a significant role. Round diamonds, for example, tend to be more expensive, with the price of a one-carat round diamond falling between $6,800 and $8,500.
It’s worth noting that most engagement rings feature 1.5-carat diamonds, which have a diameter of approximately 6.4mm. While we often see celebrities donning large engagement rings, in reality, many people prefer more understated and subtle designs.

About The Four C’s
We want to provide you with a solid understanding of the key factors that determine a diamond’s price before you make a purchase. Let’s delve into the basics of the four C’s that influence a diamond’s market value.
Carat Size
Carat size refers to the weight of a diamond and is one of the four C’s. Larger diamonds are generally more valuable, as they are rarer to find. Carat size is a crucial consideration when determining a diamond’s price.
Color
When it comes to white diamonds, a higher degree of colorlessness is preferred. Inclusions can impart different hues to diamonds, including yellow, pink, or blue. While colored diamonds can be valuable, white diamonds with a yellow tint are considered lower in value. A diamond’s color is graded on a scale from D (colorless) to Z (yellow).
Cut
The way a diamond is cut has a significant impact on its brilliance and overall appearance. It’s important to differentiate between diamond shape (e.g., round, oval, heart-shaped) and cut. Cut refers to the proportions, symmetry, and polish of the diamond. A well-cut diamond can maximize its sparkle, while a poorly cut one may lose its potential. Proper cutting takes into account a diamond’s unique characteristics to enhance its beauty.
Clarity
Clarity refers to the presence of inclusions within a diamond, which are internal imperfections or external blemishes. While inclusions may not be noticeable to the naked eye, they can affect a diamond’s overall clarity and value. Diamond graders use magnifying tools to assess and grade a diamond’s clarity on a scale ranging from flawless (FL) to included (I1, I2, I3).
Understanding these fundamental aspects of diamonds will help you make an informed decision when purchasing one.

Best Diamond Carat For Rings
Now that you understand the four C’s of diamonds and the role of carat weight, let’s discuss the ideal carat weight for a diamond ring, which is likely the main reason you’re here.
Choosing the right carat weight primarily depends on personal preference. Some individuals prefer subtle and delicate jewelry, while others desire a more eye-catching appearance. However, it’s essential to avoid going below a certain carat size, as that decision can be just as significant of a mistake as selecting a diamond that is too large.
Factors to Consider:
- Budget: Before embarking on your diamond search, establish a budget and determine how much you are willing to invest in a diamond for your ring. Remember, even a slight difference in carat weight can have a significant impact on the price, so plan your budget wisely.
- Size: While it’s easy to be captivated by a large diamond on a celebrity’s finger, it’s crucial to consider whether such a size will suit your style and hand. Choose a carat weight based on your personal preferences and how it complements your overall appearance.
- Proportionality: Remember that you are not only selecting a diamond but also a ring. Consider whether the ring features additional stones or intricate details, as this may influence the desired carat weight for the central diamond.
- Compromise: Evaluate how crucial it is for your diamond to be flawless and colorless. If you are willing to compromise on these factors, you can secure a larger diamond at a more affordable price.
Budget-Friendly Options:
If you seek excellent value for your money and prefer not to splurge on a diamond ring, consider a diamond with a carat weight between 0.7 and 0.9.
These diamonds come close to the one-carat mark, especially the 0.9 carat option, yet they are significantly less expensive. This is because the price of a diamond increases significantly once it reaches the one-carat threshold.
An excellent strategy is to opt for a 0.9-carat diamond, as it will be challenging for anyone to notice the slightly smaller size, while your wallet will benefit from savings of a few hundred dollars.
Please note that the popularity of this information has led to a slight increase in prices for diamonds of this size. Expect to pay between $3,000 and $4,000 for a diamond ring in this range. On average, 0.7-carat diamonds are priced around $2,000.
Consider these factors and budget-friendly options when selecting the ideal carat weight for your diamond ring.

One-Carat Diamonds
As previously mentioned, one-carat diamonds are the most popular size, which also means they come with a higher price tag. If you’re looking for a well-rated one-carat diamond ring, expect to spend no less than $4,500.
The shape of the diamond significantly impacts its price at the one-carat mark, so if you’re aiming to save some money, consider exploring options other than round diamonds.
If you’re not too concerned about having a colorless and flawless diamond, you can likely find a one-carat ring for around $3,000.
In terms of appearance, one-carat diamonds are proportionate and strike a balance between being neither too small nor too large, making them a popular choice.
1.25 Carats and Above
Once you exceed the one-carat mark, diamonds become noticeably larger.
1.25 Carats
1.25-carat diamonds hover on the cusp of being large, yet they can still maintain a subtle presence. On average, well-rated 1.25-carat diamonds cost around $6,500. However, if you’re willing to compromise on color and clarity, you can find them for cheaper (around $4,000).
1.50 Carats
Moving up to 1.50-carat diamonds, they are significantly larger and more noticeable, but this also comes with a higher price tag. Well-cut, near-colorless 1.50-carat diamonds can be expected to cost around $9,000. However, compromising on perfection can lead you to find diamonds of this size for as low as $5,500.
2.00 Carats
For those seeking to make a statement, 2.00-carat diamonds will undoubtedly accomplish that. With a diameter of approximately 8mm (nearly 1cm), these stunners are impossible to miss. However, it’s important to note that such size comes with an even larger price tag, starting at least at $16,000 (or $9,000/$10,000 if you compromise on color).
3.00 Carats
If you desire a prominent rock on your finger, a 3.00-carat diamond ring might be what you’re looking for. It will undoubtedly draw attention wherever you go. However, be prepared for the hefty price tag that accompanies it. To acquire a flawless diamond ring of this size, you’ll need a budget of at least $35,000. If you’re willing to accept some yellow hues and inclusions, you can find one at a significantly lower price point of around $23,000.
5.00 Carats
Now, we’re talking about the big guns. For a breathtaking, show-stopping, celebrity-sized ring, a 5+ carat diamond is the way to go. These diamonds are impressive in both size and price. However, it’s important to note that well-performing diamonds of this size are incredibly rare, so thorough research is essential. To have one of these remarkable gems in your jewelry box or on your finger, you’ll need to set aside a minimum of $60,000, reaching up to $100,000 or more.

Conclusion
Congratulations! You now have a solid understanding of what to consider when choosing the carat weight of your diamond ring.
We’ve covered the significance of the four C’s, the distinction between diamond carats and gold karats, important questions to ask yourself during the diamond selection process, and the size and cost variations based on carat weight.
Ultimately, it’s all about your personal preferences and budget. Don’t worry too much about others’ opinions or preferences. Focus on what you or the recipient of the ring truly likes.
Now, feel free to embark on your exciting diamond shopping adventure and find a ring that you or your loved one will proudly showcase.
Enjoy the experience!