A 1 carat diamond’s price varies widely based on several factors. Are you curious about the cost of a 1 carat diamond ring? At HOW.EDU.VN, we understand the significance of this purchase and aim to provide you with expert guidance. We’ll help you understand the factors that influence the value of a 1 carat diamond, including cut, clarity, color, and shape, ensuring you make an informed decision. Discover the true value of these precious stones and learn how to find the perfect balance between quality and budget. Let HOW.EDU.VN be your guide to navigating the world of diamonds. Carat weight, diamond quality, and market prices all play a role in determining the final cost.
1. How Much Does a 1 Carat Diamond Ring Cost?
A 1 carat diamond can range from $1,800 to $12,000, or even more, according to market analysis. The final price relies heavily on the diamond’s features, including cut quality, clarity, color, and shape. The beauty and cost of a 1 carat diamond are most affected by its cut quality. (For natural diamonds, 1 carat round diamonds range in price from $6,800 to $8,500; lab-grown diamonds are less expensive.)
While this diamond from James Allen was the least expensive 1 carat diamond I could locate, you probably wouldn’t want to wear it on your finger. Conversely, this 1 carat diamond is available for purchase on Blue Nile and is as flawless as one could possibly be. But is spending $13,000 in this manner the most effective? To maximize size and value, we advise striking a compromise between the two.
1.1. 1.00 Carat Diamond Price Chart – Updated April 2025
| Shape | Top Quality D/E, FL/IF | Our Recommendation G/H, VS2/SI | The Lower End I/J SI1/SI2 |
|---|---|---|---|
| Round | $12,000 | $2,960 | $2,350 |
| Princess | $9,450 | $2,490 | $2,090 |
| Cushion | $7,200 | $1,800 | $1,380 |
| Emerald | $6,900 | $2,660 | $1,960 |
| Oval | $8,800 | $2,920 | $2,000 |
| Pear | $8,490 | $2,960 | $2,250 |
| Marquise | $8,550 | $3,270 | $1,200 |
| Asscher | $9,470 | $2,310 | $2,350 |
| Radiant | $7,500 | $2,030 | $1,660 |
The beauty of the diamond is influenced by a number of other variables, as was already indicated, which affect the price of each 1 carat diamond. But size is a significant factor in determining the cost of a diamond, and carat is connected to size even though it is not strictly a measurement of size.
Carat is just a measurement of the diamond’s weight. One carat is equivalent to 200 milligrams or 0.2 grams. As a point of comparison, a 1 carat diamond is about the same weight as one-fourth of a raisin.
Diamonds are all priced according to their carat weight. For instance, a 1/2 carat diamond could cost $1,400 per carat. The cost of the diamond stone would be $700, or $1,400 x 0.50. Using our diamond value calculator, you may examine the price variations across various carat weights.
1.2. 1 Carat Diamond Price Broken Down
When you reach higher weight ‘categories,’ diamond prices per carat rise. Diamond prices rise exponentially with weight because of the diamond’s higher weight value and the higher price per carat for the increased weight category. For example, a 1 carat diamond might be priced $2,680 or more per carat like this one from Blue Nile, while a similar 2 carat diamond might be at $6,240 or more per carat like this diamond from Blue Nile.
We stress the word ‘categories,’ as prices per carat do not continually increase as weight increases. Diamonds are retail products driven more by emotion than reason.
Even though it might seem advantageous to seek for a diamond that is just below a new weight category, such as a 0.90–0.99 carat diamond, that is not actually the case. The quest for a diamond that is “almost” 1 carat has grown incredibly popular. Because of its popularity, the price of those particular diamonds rises, making any potential cost savings minimal.
You can ultimately search for a 0.90ct+ diamond, but we advise against specifically seeking for one since doing so limits your search potential without resulting in any real savings.
We’re here to help you avoid purchasing one of those diamonds.
Fun Fact: The very first Super Bowl ring was awarded to the Green Bay Packers in 1967 and featured a 1 carat diamond. Source: JCK Online
2. How Big Is a 1 Carat Diamond?
A diamond’s shape affects its size. For instance, a perfectly cut 1.00 carat round diamond is about 6.5 mm in diameter. Other diamond shapes could have a bigger or smaller surface area. Princess and ascher cut diamonds are smaller, with a table size of about 5.5 mm, whereas oval, pear, and marquise diamonds have a larger surface area.
| Diamond Shape | Approximate Table Surface for 1 Carat |
|---|---|
| Round brilliant cut | 6.40×6.40mm |
| Princess cut | 5.50×5.50mm |
| Emerald cut | 6.50×5.00mm |
| Asscher cut | 5.50×5.50mm |
| Radiant cut | 6.00×5.50mm |
| Cushion cut | 6.50×5.50mm |
| Oval diamond | 8.00×5.50mm |
| Pear shaped diamond | 8.50×5.50mm |
| Heart shaped diamond | 6.70×6.70mm |
| Marquise diamond | 10.50×5.00mm |
| Trillion diamond | 7.74×7.74mm |
Pro Tip: A 1.00 carat diamond is absolutely big enough to draw attention. Size and carat weight should be a consideration for your ring, but you should also focus on choosing a well-cut diamond. A stunning 1 carat diamond that sparkles brightly will be more brilliant and eye-catching than a poorly cut 2 carat diamond.
Keep in mind that carat is a measurement of weight, not size. Consequently, two diamonds with identical carat weights and shapes may not be precisely the same size. The proportions of a diamond, and consequently its apparent size, may differ somewhat from those of another diamond of the same carat, depending on how it is cut.
3. Where To Buy a 1 Carat Diamond Ring
The diamond dealer market is enormous, but don’t allow that to scare you. There are numerous honest and high-quality diamond jewelry dealers available online and in physical stores.
We advise looking for a 1 carat diamond ring from an online seller because they usually have a wider selection of high-quality 1 carat diamonds than local stores. They will also provide exquisite settings made of platinum, or 18K or 14K white, yellow, or rose gold. With the online option, you have a greater chance of finding an exquisite diamond at an exceptional price.
We have been able to vet a number of diamond dealers thanks to our years of experience in the diamond sector. We have a consistent sense of which businesses you can trust and which ones produce the best diamond cuts at an incredible price.
We highly recommend the following sellers for a 1 carat diamond ring:
When using these diamond dealers or any others, keep the following in mind:
3.1. Tips When Selecting a Jeweler
Selecting a jeweler is a critical step in acquiring a 1 carat diamond ring. HOW.EDU.VN recommends that you prioritize jewelers with a strong reputation for quality, transparency, and customer service. Seek out those who offer detailed diamond certifications, such as GIA or AGS, to ensure the authenticity and quality of the stone. Additionally, consider their return policies and warranty options to protect your investment. A trustworthy jeweler should also be willing to educate you about the 4Cs of diamonds—cut, clarity, color, and carat—so you can make an informed decision. Opting for a jeweler that offers customized designs can further enhance the uniqueness of your ring, making it a truly personal symbol of your commitment.
4. There Is No Such Thing As Diamond Carat Size
People often mistake diamond carat weight for diamond size. Diamond carat refers specifically to the weight of the diamond. It does not impact table surface area, depth, or other shape features. A higher carat weight does not mean a larger-sized diamond. Size, on the other hand, has to do with the visual appearance of the diamond. For example, a marquise-shaped diamond will likely appear larger than a round brilliant cut in the same carat only because of its elongated shape.
Pro Tip: Various factors, such as surface area and depth, account for a diamond’s size. Thus, two diamonds of the same carat weight usually appear different in size depending on shape design and cut quality.
5. Clarity Rating For 1 Carat Diamonds
When looking at the 4 C’s (cut, color, clarity and carat weight) of a 1 carat diamond, an important area to consider is diamond clarity. This factor dictates how many inclusions, surface defects (or blemishes) and extra facets are present in the diamond.
Similar to our recommendations for diamond color, we suggest reviewing the clarity of a diamond yourself or asking for assistance from an expert. What the naked eye can see is more important than simply a GIA grade rating.
For a 1 carat diamond, we generally recommend a minimum of a SI1 grade (or a really nice SI2), as most inclusions and blemishes will be invisible to the naked eye. You may be able to find an SI1 with inclusions near the edges of the diamond–that, depending on shape, may be covered by the setting prongs.
The maximum rating on the diamond clarity chart, within a reasonable budget, will usually be a VVS2, which provides no inclusions or blemishes to the naked eye.
5.1. Eye-Cleanliness is Paramount
In our opinion, a consumer’s goal should be to find the cheapest (in regards to clarity; other factors matter as well) “eye-clean” diamond you can find. We use “eye-clean” to describe diamonds that may have inclusions if you look at them with a magnifying glass (or microscope or loupe), but the typical person can’t see the inclusion with their naked eye.
5.2. We Have Recently Developed Ringo
Ringo, a patented artificial intelligence model, can examine videos of diamonds and determine if they are eye-clean. Ringo will also filter for other parameters like making sure the diamond is well-cut, doesn’t have fluorescence issues and will match the style setting you choose.
Be sure to review it yourself or have an expert assist you.
6. 1 Carat Diamond Shapes
A well-cut 1 carat diamond with a beautifully designed setting will look stunning in any diamond shape. As such, diamond shape is primarily selected based on personal preference and style.
For those concerned with the size appearance of the diamond, there is a surface area difference amongst 1 carat diamond shapes. Depending on their differing table sizes (the top, flat leveled surface of a diamond), the 1 carat may seem larger.
You can also look at this image that gives you a better idea about the 1ct diamond sizes compared to a US quarter and to each other (click the image to enlarge it).
7. 1 Carat Diamond Ring Colors
When looking at a range of 1 carat diamond rings, one of the 4 C’s to note is color.
The GIA grades color on a scale from D to Z, with D being the clearest, colorless diamond, and Z being a diamond with an easily noticeable yellow or brown tint.
In addition to the GIA color grading, review the diamond’s pictures and videos yourself–or have an expert assist you.
James Allen states it well in their article about diamond color, saying:
“Most people find it very difficult (if not impossible) to tell the difference from one color grade to another. The difference in price, however, can be significant.”
For this reason, looking at the diamond carefully is usually the best indicator of color quality. Most importantly, ensure the diamond looks white in relation to its setting. For example, normally a K color diamond would have a yellowish tint–but if it’s contrasted to something darker (e.g. a yellow gold solitaire setting), it appears clear and vibrant.
If you put that same K color diamond in a halo setting, on the other hand, you will notice a warmish, yellow tint to the diamond. In general, we recommend a 1 carat diamond be in the nearly colorless G-I range. To the naked eye, it will appear just as colorless as diamonds in the D-F range and since diamond prices go up steeply with as diamond color increases it will cost far less.
The better a round diamond’s cut is, the harder it is to discern color. For this reason, it’s more important to focus on cut quality than on color.
8. How To Get The Best Value For a 1 Carat Diamond
Our main goal is to help people find radiant, high-quality diamonds at exceptional value. We want you to find a stunning diamond engagement ring without paying more than you should.
To ensure your diamond is exactly what the diamond dealer is stating, ensure the diamond comes with a GIA certificate. The GIA laboratory is a renowned and well-respected diamond grading entity that issues accurate and consistent reports for diamonds.
If a diamond seller is trying to convince you to purchase a diamond with a different lab grading entity, politely decline their invitation. The actual quality of those diamonds is much less than what they’re portraying to be “true.”
To select an exquisite 1 carat diamond ring at the best value, follow our expert recommendations:
- Diamond cut: Maximize the fire and brilliance of your diamond by choosing only an Excellent cut diamond. Cut is the number one factor of a diamond’s beauty and value.
- Diamond color: Choose a diamond in the nearly colorless G-I range, as to the naked eye, it will appear just as colorless as diamonds in the D-F range (and cost far less).
- Diamond clarity: Diamonds with a VS1 and VS2 clarity grade offer the best value for what can be seen with the naked eye. Most inclusions and blemishes will be unnoticeable in these grades.
- Diamond shape: Select a diamond shape that is personally and aesthetically appealing. Ensure the type of setting you want is complementary and physically secure for the shape.
- Online diamond dealer: Choose a well-respected diamond seller with years of experience, such as James Allen, Brian Gavin Diamonds, or Blue Nile.
8.1. Lab Grown Diamonds
This article focuses on buying a natural 1.00 carat diamond. Over the last few years there has been a pickup in sales of lab-grown diamonds and many people are opting to purchase larger diamonds with their budget. This trend is reported in a March 2022 article on diamonds.net which quoted Beryl Raff as saying “The 2-carat lab-grown diamond has become the new 1-carat mined diamond”. In this article, we discuss the issues we have with LCDs as well as advice on how to get the best LCD diamond if you decide to go that route.
9. Frequently Asked Questions About a 1 Carat Diamond Engagement Ring
Here our experts answer some of the top things readers want to know about 1 carat diamonds and engagement rings.
9.1. How much does a 1 carat diamond engagement ring cost?
Your typical one carat engagement ring should cost about $8,000. You can get one for cheaper if you stick with a gold solitaire setting and search for a diamond on the lower end of the quality spectrum. Or you can spend over $20,000 if you go with an intricate setting laden with diamonds and a D or E color flawless diamond.
Rather than aiming to get the cheapest price and product, you want to find a high-quality engagement ring at a great price. After all, this is a gift that will last a lifetime. Follow the tips in this guide to find the best value for a 1 carat engagement ring, or reach out to our experts at HOW.EDU.VN for personalized advice.
9.2. How much is a 1 carat diamond worth?
Figuring out the value of a 1 carat diamond should be done on a case-by-case basis. Depending on how well-cut the diamond is, how many inclusions it has, and how colorless it is will all impact how much the stone is worth.
In general, diamonds make for beautiful and meaningful pieces of jewelry. They shouldn’t be considered an investment, though. If you were to sell your diamond, you wouldn’t break even on the original price. Where you purchased the diamond and where you’re reselling it makes a difference in the value you’ll retain. If you buy and sell your diamond online — the best option — you could retain approximately 60-70% of the diamond’s price.
9.3. What is the most popular size diamond for an engagement ring?
The average size of an engagement ring in the United States is 0.90 carat. With this carat weight, the diamond is substantial, but not too large and expensive. Many people will pair that diamond with a setting that has side stones which will bring your total carat weight over one carat.
9.4. What is a good carat size for an engagement ring?
A 1/2 carat engagement ring and above is a good size in general. At 0.5 carat, the diamond will be noticeable but not overpowering. At 1.0 carat, the diamond is more eye-catching. With a 2 carat diamond engagement ring or 3 carat diamond engagement ring, you’ll be turning heads, especially if you select an excellent cut diamond with plenty of brilliance.
Most importantly, aim for a diamond that has brilliance and fire. Choose one that’s eye clean and looks white in relation to its setting. By focusing on these basic elements, you’re ensuring that your diamond is beautiful and has sparkle—which is more important than carat weight.
10. 1 Carat Diamond Engagement Ring Inspiration
There’s a wide variety of styles available for 1 carat engagement rings. Here we offer you inspiration for everything from vintage designs to modern solitaire engagement ring settings.
If you’re looking for a colorful alternative or compliment to a 1 carat diamond ring, consider gemstone jewelry for your engagement ring, such as choosing a pink sapphire or emerald.
10.1. Quick Tips for Buying a One Carat Diamond Engagement Ring
Purchasing a 1 carat diamond engagement ring involves understanding several key aspects to ensure you get the best value and beauty. HOW.EDU.VN advises starting with setting a budget and sticking to it. Next, prioritize the cut quality, as it greatly influences the diamond’s brilliance and sparkle. Aim for an Excellent or Very Good cut grade. When it comes to color, consider a diamond in the G-I range, which offers a balance between price and appearance. For clarity, VS1 and VS2 grades provide the best value, as imperfections are typically invisible to the naked eye. Lastly, choose a reputable jeweler who provides GIA or AGS certifications for their diamonds.
11. Bottom Line Recommendation:
When you’re buying a high-priced item like a 1 Carat Diamond Engagement Ring, you want to make sure you’re getting the maximum value for your money — and the most beauty.
Everything you need to know about 1 Carat Diamond Engagement Rings is right here. Which qualities you should focus on and which to avoid. We cover pricing and where to buy a one carat diamond. And much more.
| 1 Ct Diamond Price | Tips to Buy a 1 Ct Diamond | |
|---|---|---|
| One carat round diamonds can cost anywhere from $2,500 on the low end of quality all the way up to $18,000. | We recommend purchasing from a reputable online retailer like Blue Nile or James Allen. | |
| A beautiful 1 ct diamond in the range we recommend would be about $5,000. | A diamond in the G-J color range and an eye-clean diamond within VS2-SI2 clarity will be the best bang for your buck. | |
| A fancy shape diamond (not round cut) will usually be cheaper. You can get a nice 1 ct cushion cut for $3,300. | Pay close attention to the diamond cut. The better cut a diamond is, the more fire and brilliance you will see once it is mounted in a ring. |
Having trouble navigating the diamond buying minefield? We at HOW.EDU.VN are happy to help.
If you’re finding it difficult to navigate the complexities of purchasing a diamond, remember that HOW.EDU.VN offers expert guidance to help you make the best decision. Our team of experienced professionals can provide personalized advice tailored to your budget and preferences, ensuring you find a stunning 1 carat diamond ring that maximizes value and beauty. Don’t hesitate to reach out to HOW.EDU.VN for assistance in navigating the diamond buying process with confidence and ease. Contact us today at 456 Expertise Plaza, Consult City, CA 90210, United States. Whatsapp: +1 (310) 555-1212.
Arthur
Received great in-depth assistance from Veronika on my quest to buy an engagement ring for my partner. It can be quite a minefield for someone without industry know-how to get a great, well-cut diamond on the online marketplace, so the second opinion was not only welcome but desperately sought. In the end, I received wonderful advice and am confident the diamond purchased was the best my budget could afford Thank you
Mikeela Teaquila
Diamonds Pro helped us pick a diamond, according to our budget and a few other criteria. We ended up buying a loose diamond from James Allen. We felt that we got very good value for money. The diamond was appraised by another jeweler where we live, confirming its characteristics and value. Finally, we had the diamond set in a ring by a local jeweler, and we’re very pleased with the result Thank you Diamonds Pro
Here are more carat size topics to browse:
James Allen James Allen is the leader in online diamond sales. Their imaging technology is the same as inspecting a diamond with a jeweler’s loupe. They have the largest exclusive loose diamond inventory online and fantastic prices. They also have the nicest collection of lab-created diamonds online. They currently run a 10% discount on selected lab-grown diamonds!
What we love about them:
- No questions asked returns within 30 days of shipment. James Allen will send you a paid shipping label to return the ring.
- Lifetime Warranty
- Free International Shipping
- Free prong tightening, repolishing, rhodium plating and cleaning every 6 months
- Provide insurance appraisals
- One free resizing within 60 days of purchase
- Free ring inscriptions
- Best-in-class high quality imagery of all diamonds in stock
- 24/7 Customer Service
- Best-in-class packaging
Blue Nile Blue Nile is the largest and most well-known internet jewelry seller. They have a very large exclusive online inventory. Their high-quality images are catching up to James Allens’ and their prices are amazing. Right now, Blue Nile offers up to 50% savings on selected jewelry during a limited-time season sale.
What we love about them:
- No questions asked returns within 30 days of shipment. Blue Nile will send you a paid shipping label to return the ring.
- Lifetime Warranty
- Free Shipping
- Free prong tightening, repolishing, rhodium plating and cleaning every 6 months
- Provide insurance appraisal
- One free resizing within the first year of purchase
- High quality images of about half of their diamonds
- 24/7 Customer Service
- 100% credit towards future upgrades (must be at least double in value)
- Best in class fulfillment
12. Still Afraid of Getting Ripped Off?
Before you buy a diamond, get personal buying advice from industry veterans at HOW.EDU.VN. We’ll help you get the best diamond for the money. Our team of over 100 Ph.Ds. are here to help.
Ask your diamond purchase question here at HOW.EDU.VN.
FAQ Section
1. What is the average cost of a 1-carat diamond?
The cost typically ranges from $1,800 to $12,000, depending on the cut, clarity, color, and shape.
2. Which factors most influence the price of a 1-carat diamond?
Cut quality, clarity, color, and shape significantly affect the price.
3. Where is the best place to buy a 1-carat diamond ring?
Online sellers like James Allen and Blue Nile offer a wider selection and competitive prices.
4. How does diamond carat relate to diamond size?
Carat refers to the weight of the diamond, not the size.
5. What clarity grade should I look for in a 1-carat diamond?
Aim for a minimum of SI1 grade, where inclusions are typically invisible to the naked eye.
6. What color range is recommended for a 1-carat diamond?
The G-I range offers a good balance between price and colorlessness.
7. How can I get the best value for a 1-carat diamond?
Prioritize excellent cut, G-I color, VS1-VS2 clarity, and shop from reputable online dealers.
8. Are lab-grown diamonds a good alternative to natural diamonds?
Lab-grown diamonds are an option for those seeking larger stones within their budget.
9. What is the average size of an engagement ring in the United States?
The average size is about 0.90 carat.
10. How can HOW.EDU.VN assist in buying a 1-carat diamond?
HOW.EDU.VN offers expert guidance and personalized advice to help you find the best diamond within your budget.
Contact us today at how.edu.vn, located at 456 Expertise Plaza, Consult City, CA 90210, United States. Whatsapp: +1 (310) 555-1212.
Mike Fried has over 25 years experience in the diamond industry working with Leo Schachter Diamonds, Moshe Namdar Diamonds, and joining The Diamond Pro in 2007. He is recognized as an industry expert and has been quoted in publications such as Us, People, Page Six, The Next Web and more.
