Half Carat Princess Cut Diamond Ring – The Complete Guide

solitaire princess cut half carat diamond engagement ring in platinum

Princess cut diamonds are the second most popular choice for engagement rings and are easily recognizable for their square-cut outlines. Their unique appearance gives them a contemporary and modern appeal.

The princess cut diamond is technically known as a “square-modified brilliant” cut and the extra facets it possesses give it superior scintillation. Besides the sparkle and brilliance that they display, princess cut diamonds are also significantly cheaper compared to the traditional round cut diamonds.

This is because the princess cut diamond achieves a higher yield from a rough diamond where there is less wastage. Due to its lower cost, princess cut diamond engagement rings are affordable options for people shopping on a tighter budget.

In this article, you will find out everything you need to know about buying a beautiful half carat princess cut diamond ring and discover some of the best ring designs that will complement a 0.5ct center stone.

I will also show you how I personally bought a stunning princess cut engagement ring for less than $2,000. Also, make sure you check out the video I recorded to see how the ring looks like in different real-life environments. Ready? Let’s jump right in…

How Big Does a Half Carat Princess Cut Diamond Ring Look?

One of the most common questions I get asked is how big a 0.5ct princess cut diamond ring would look like when worn on the hand and whether it is too small/big for the finger. Well, the physical face up size of a 0.5 carat princess diamond is roughly 4.4mm by 4.4mm.

For some visual perspectives, the chart below illustrates how princess cut diamonds of different carat sizes measure up. Do note that a 1.00ct diamond is not twice as big as a 0.50ct diamond even though it weighs twice as much.

princess cut diamond size chart

I’ve also included a photograph of a half carat princess cut diamond solitaire ring to give you an idea of how it looks like when worn in real life. I know many people get hung up on buying the largest possible size they can afford while others are contented with a simple no-frills ring.

how big is a half carat princess cut diamond ring on finger

This simple 4 prong solitaire ring is worn on a size 7 finger and the setting puts the emphasis on the center stone. At the end of the day, whether a half carat diamond is too big or too small is subjective and depends on an individual’s values.

Leave a comment at the end of the article to let me know if a 0.5ct diamond is too small, too big or just the right size. I love hearing from readers and finding out what your thoughts are.

How Much Does a Half Carat Princess Cut Diamond Ring Costs?

Assuming you choose a simple ring setting and mid-range diamond, a ballpark figure of roughly $1500 to $2000 would be sufficient to get a beautiful looking ring. Having said this, do note that the actual cost of an engagement ring would really depend on a variety of factors.

This is because the cost of a diamond ring is made up of 2 main components: the ring setting and the center stone. Depending on the intricacy and style of ring you choose, prices can vary. Also, the quality of the center like color and clarity ratings would affect the cost of the center stone.

Here’s a price chart that I compiled for 0.5 carat princess cut diamonds of various cut quality, color and clarity ratings to give you an idea of price differences between them. To state the obvious, you will notice that the higher the clarity and color grades, the more expensive the diamonds become.

half carat princess cut diamond prices comparison chart

While carat, cut, clarity and color grades are the more obvious factors that influence prices, there are also subtle reasons like eyecleanliness, color hue and fluorescence that can also affect the price of a diamond.

3 Things to Look Out For When Buying Princess Cut Diamond Rings

Certification – One of the most important things to look out for when buying a half carat princess diamond is to find out if it’s certified and whether it has been graded by a reliable lab like GIA or AGS. This gives you assurance of what you are buying and ensures that the diamond’s qualities have been accurately represented.

Bear in mind that not all grading reports are made the same. I’ve seen princess cut diamonds that are sold in large jewelry chain stores with dubious grading certificates (e.g. EGL, GSI) or worse still, in-house appraisals that are issued by the jewelers themselves.

The majority of these labs have inflated grades due to their lax grading methodology to make it seem like you’re getting a better diamond at a lower price. In reality, it’s the complete opposite.

For example, you are likely offered an I2 clarity diamond that’s being sold as an SI1 clarity diamond or being sold a D color diamond that is actually a G color.

Durability – The princess cut diamond is characterized by its squarish outline which features 4 pointed corners. These corners also happen to be the areas that are most prone to chipping because of their weaker mechanical strength.

To protect the edges against chipping, you should always select a ring design that has prongs covering the corners completely. Most ring settings utilize 4 rounded ball or v-shaped prongs to protect the vulnerable tips against accidental impacts.

feather inclusion at bottom left hand corner

Inclusions at the bottom left hand corner tip of this diamond are a concern.

Also, I would generally recommend princess cut diamonds that don’t have inclusions like large feathers or cavities that are located near the edges. You basically don’t want anything that will potentially weaken the diamond’s mechanical structure in these areas.

Light Performance – The sparkle and brilliance of a princess cut diamond are things that most people see when viewing an engagement ring. Nobody likes a dull looking or lifeless ring and hence, cut is the most important aspect of the 4Cs you should pay attention to.

But determining the light performance of a princess cut diamond is easier said than done for most people. To get started, read this comprehensive guide I’ve written here to see how a well cut princess shaped diamond looks like and the kind of proportions you should look out for.

super ideal cut princess shaped diamond half carat weight
glassy looking light leakage diamond low crown angles

Comparison of a well cut princess diamond against a diamond that is mediocre.

As a consumer, the easiest way to choose a well cut diamond is to buy from a vendor that has transparent sales practices and offers tangible data like videos and ASET scope images. You may also want to stick with diamonds that are graded by AGS as their grading reports provide cut quality analysis and ray tracing data (ASET).

6 Gorgeous Princess Cut Diamond Ring Designs You Need to See

Princess cut diamonds have a geometric shape that is highly versatile and can look great in a variety of ring styles. Here are some of my favorite designs to complement a half carat princess cut diamond and if you are interested in more details, simply click on the corresponding images to find out more.

petite channel set benchmark designer ring with half carat princess cut diamond ags certified

This petite designer ring from White Flash features an elegant shank with channel set diamonds that accentuate the center stone. Made of 14k white gold, it is superbly crafted and is surprisingly sold at an affordable price point.

0.5 carat solitaire white gold ring princess shaped diamond

The classic and no-frills 4 prong solitaire ring design that places full emphasis on the center stone. This setting allows for maximum light return and allows the diamond to showcase its brilliance and sparkle. It is also available in a variety of metals like platinum, 14k white gold and 18k white gold.

half carat princess cut white gold diamond ring with pave setting

If you are a fan of blingy appearances, this french-cut pave diamond engagement ring will be a perfect choice for a 0.5 carat princess cut diamond. The flush fit shank design allows easy matching of this engagement ring with a wedding band.

14k white gold tapered baguette diamond engagement ring

This captivating 3 stone diamond ring is inspired by Art-Deco design elements and showcases 2 tapered baguette sidestones that frame the center gem. With a modern looking princess cut center stone, it gives this classic ring a contemporary twist in its appearance.

half carat princess cut halo diamond ring

Halo rings are the best ring styles that will help create a large looking diamond ring in a cost-efficient manner. If you are someone who wants a bigger bang for your buck, this floating halo ring from Blue Nile is one of the best options to consider.

double row tapered pave diamond engagement ring with half carat size princess diamond

This ravishing ring features an eye-catching double row of tapered pave diamonds to give it a truly unique look. The tapered shank helps to draw the viewer’s attention towards the center stone while providing a magnificent backdrop of splintery sparkle.

There are literally hundreds of designs available for a half carat princess cut engagement ring. Visit White Flash, James Allen and Blue Nile to browse through beautifully crafted designs to find your perfect ring today!

How I Bought a Half Carat Princess Cut Diamond Ring For $2000

I know there are plenty of readers who have a smaller budget and I often get asked questions like whether someone can get a nice looking ring for less than $2000. And the answer is yes, you can get a gorgeous engagement ring if you shop in the correct places with the right mindset.

two thousand dollars diamond ring on hand how it looks like
engagement ring under 2000 pave design

My wife wearing a princess cut pave diamond engagement ring on her hand.

When buying a diamond ring on a budget, my advice is to take on a practical mindset and to avoid unnecessary things that drive up costs. What do I mean by this? For starters, a D/IF diamond is going to cost significantly more than a lower color/clarity diamond and you don’t need high color/clarity grades to get a stunning diamond.

In fact, a well cut diamond in the G or H color range with lower clarity grades will look identical to a D/IF diamond to the unaided eye. And that’s what I did when I bought a diamond ring for my wife with a $2000 budget. I prioritized light performance over color and clarity grades to get the maximum sparkle out of the diamond and chose a simple pave ring setting to complete the ring.

14k white gold petite pave engagement ring

princess cut diamond loose 1000 dollars

At the time of purchase, the total cost of the diamond engagement ring comes up to be $2,010 (800 + 1,210). Bear in mind that this is a top of the line diamond when it comes to cut quality and I’m also getting a well-made setting at this price point.

Check out the video below to review the ring’s sparkle and workmanship for yourself.



Using James Allen’s highly detailed video listing, I was able to select an eyeclean SI1 clarity diamond easily. On top of that, the video listing also enabled me to assess the diamond’s light return and scintillation patterning easily.

Exemplary business practices and transparent sales policies that guarantee a risk-free purchase are things you should be looking out for when choosing a vendor to buy from.

Summary – Best Place to Buy a 0.5ct Princess Cut Diamond Ring

I hope this article has offered insights into buying a half carat princess cut engagement ring and given you an idea of how they physically look in real-life. Personally speaking, I find that a half carat size diamond provides a good balance between costs and providing sufficient finger coverage.

It is ideal for people who are shopping with a smaller budget or simply want something that isn’t too flashy.

Remember, the key to choosing a beautiful diamond is to focus on cut quality instead of color or clarity grades. Cut determines how much sparkle and brilliance the diamond has and this is one of the first things that people will notice when viewing your ring.

When it comes to ring setting designs, there are literally hundreds of styles to choose from. So, take your time to look at as many designs as you before making a final decision on the perfect design for yourself.

If you have any questions or need help in a diamond selection, feel free to get in touch or leave a comment below. Have fun shopping for your dream ring!

Vendors like White Flash, James Allen and Blue Nile are the best places to buy a half carat princess cut diamond ring. Their transparent business practices and availability of tangible data make the entire shopping process very straightforward. Check them out for yourself!

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  1. Vivian-
    September 26, 2019 at 9:23 pm

    I was being offered a 0.50 carat total weight princess cut diamond in a pave setting where the color and clarity is G-SI1. The salespeople told me that the carat stone count and carat weight is approximate and I would likely get more than 0.50 carats of diamonds because their store policy is to ensure that weights are higher than what is advertised. The diamonds are also checked with a D Secure machine that ensure 100% naturally mined diamonds and they guarantee that no lab grown diamonds or fake diamonds are used. What do you make of this? The price of the ring is $1,490 and the ring is 14k white gold.

  2. Paul Gian-
    September 27, 2019 at 2:49 am

    There are many red flags in this “deal” because of the lack of proper information and the disadvantage you have in terms of understanding what is being sold. Let me explain. The carat total weight of 0.5 carats means that the sum of all the diamonds used in the ring.

    This variable directly affects the value of the ring. For example, if the diamond has a 0.40 carat center stone with 10 other 0.01 melee diamonds compared with a ring that has a 0.30 carat center stone combined with 20 other 0.01 melee diamonds, the former ring would theoretically cost more because a single larger diamond costs more than multiple diamonds that make up the same weight.

    Secondly, the ring doesn’t seem to come with a GIA or AGS certificate and I have no idea what a D Secure machine is nor would I trust any grading of the diamonds that are simply said by the vendor without a proper certificate to back it up.

    Thirdly, the price of this ring is on the higher side. Even if the diamond was properly graded, you could get a higher quality diamond at a similar price and remove all these uncertainties surrounding this deal you are offered.

  3. Bill Cassidy-
    January 17, 2020 at 5:56 pm

    I was offered an 18ct white gold half carat princess cut diamond ring with F/SI2 with a GIA certificate for $1,780 at the mall. Do you think this is a good deal? It seems like they are asking for prices that are similar to the retailers you recommend.

  4. Paul Gian-
    January 20, 2020 at 5:00 pm

    Do you have a video listing, scope images or any tangible data for that diamond? The price of a half carat princess cut engagement ring is just one factor and you do need to understand that there are things that affect prices like the nature of inclusions and the light performance of the diamond. Unless I have have the tangible data, I cannot give you any constructive feedback on the ring.

  5. ann tennant-
    June 21, 2020 at 1:13 am

    I recently went to a jeweler who was recommended by a friend of mine. They were selling a princess cut half carat diamond ring in platinum for a price of $2,400 with an appraisal document that says that the diamond is F in color and SI1 in clarity. The appraised value for the ring is $3,500 and he mentioned that the price I am getting is discounted as it was via a referral. What do you make of it?

  6. Paul Gian-
    June 22, 2020 at 2:55 pm

    It smells like a rip off. First of all, appraisal values are often inflated for the feel good factor and it doesn’t help you at all with higher premiums if you are using the appraisal document for an insurance policy as well. From experience, I can tell you that buying from a “friend” or “jeweler” that someone knows generally won’t end up well. From the looks of things, this diamond doesn’t come with a GIA/AGS certificate and that’s a red flag. The diamond’s quality is going to be worse than F and SI clarity. Plus, prices look steep for a platinum ring unless you are getting one that is super detailed or require lots of man hours to make.

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