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0.4 carat cushion cut diamond ring Buying Guide

Our guide can help you save up to $712.
In this guide, we will show you how to get the most out of your purchase of a 0.4 carat cushion cut diamond ring. We will point out the areas where it's worth spending more and where you can cut costs. We'll also provide information on where to find your perfect ring, or maybe even one that's even more exceptional.
Skip the lessons and going straight to shopping.
We have selected the best deals on cushion cut diamond rings that are 0.4 carats in size from trustworthy online stores. Take a look at our carefully chosen options by visiting the links below.

Diamond Price Guide Overview
8 buying lessons - 5-10 min total read time

Snag the best price on a high-quality 0.4 carat cushion cut diamond ring.

In the upcoming lessons, we'll show you how to make your 0.4 carat cushion cut diamond ring shine and appear larger without spending too much. We'll also provide you with helpful tips to avoid being ripped off by diamond companies.
Average Price
$656.39
Price Range
$370-$1,260
Our Max Savings
$712
Lessons 1-4  ∴  Save Money 
Lessons 4 & 5  ∶  Spend Money 
Lessons 6-8  ∴  Personalize & Decide 
⤫ 40% Cash Savings

Lesson 1

Buying Online

Buying a diamond ring online can be much more affordable. The stores located in shopping malls often add a markup of 40%, and their selection is typically more limited.
$620 Cash Savings

Lesson 2

Clarity

You can save a lot of money on diamond ring prices by using our clarity tips. We will teach you how to save a significant amount here.
$150 Cash Savings

Lesson 3

Color

The color of a diamond plays a big role in determining its price. We are here to help you understand how to use this information to your advantage and save money.
⤫ 85% Cash Savings

Lesson 8

Lab Grown

Choosing a lab-grown diamond ring could potentially save you about 85% on a 0.4 carat cushion cut diamond ring. However, you may encounter some difficulties if you decide to sell it later on.
☺ Spend Money

Lesson 4

Carat Weight / Size

Women often prefer larger diamonds, making them a popular choice. Therefore, it is wise to invest in bigger-looking stones. We can provide guidance on how to maximize the size of your diamond while finding savings in other areas.
☺ Spend Money

Lesson 5

Cut, Sparkle & Brilliance

The way a diamond is cut is crucial to its overall appearance. It's important not to skimp on this aspect, as it's what gives the diamond its sparkle and impressive look.
≔ Personalize

Lesson 6

Shapes

The way a diamond ring looks and shines depends on its shape. We will demonstrate how each shape provides a distinct appearance and sparkle.
≔ Personalize

Lesson 7

Setting / Band

Opting for a solitaire ring can help you save some money and elevate the appearance of your diamond. However, it's important to consider your personal preferences when making this choice.

Lesson 1 - Buy Online
Up to 40% savings here

Get your 0.4 carat cushion cut diamond ring online and save up to 40% on the price instantly.

Deciding to buy your jewelry online has many advantages compared to shopping at physical stores, especially when it comes to cost, variety, and personalization. Websites like Blue Nile and James Allen can offer diamonds at significantly lower prices than traditional retailers, often up to 40% less, because they don't have the same expenses for maintaining physical stores. Online stores provide a larger selection of options, giving you the chance to find the perfect diamond from a wide range of choices. They also offer more opportunities for customization, allowing you to design your own ring that perfectly matches your vision. This adds extra value and personal touch to your purchase.

Click on the 'shop now' links below to begin creating your very own high-quality 0.4 carat cushion cut diamond ring at the best price possible!

If you're ready to start shopping right away, click on our links. They will take you directly to the best deals on high-quality diamonds from the most reputable online diamond companies.

Our Money Saving Links

Watch us compare pricing with retail stores and our favorite online brands

Ease of Use
Pricing
Selection
Customer Service
Best overall experience, great selection, 24/7 customer support
Ease of Use
Pricing
Selection
Customer Service
Another excellent website for very well priced diamond rings.
Ease of Use
Pricing
Selection
Customer Service
They focus on ethically sourced diamonds. Best option for karma free rings
Ease of Use
Pricing
Selection
Customer Service
They focus on ethically sourced diamonds. Best option for karma free rings
Ease of Use
Pricing
Selection
Customer Service
Mostly here to show you how retail companies are not high quality. 

Lesson 2 - Clarity

The price of a 0.4 carat cushion cut diamond ring is heavily influenced by the clarity of the diamond.

⊗ Up to $813 savings with these tips
Watch us save thousands of dollars by simply selecting the right clarity range.

What is Clarity?

Diamond clarity is a term that describes how noticeable imperfections or blemishes are in a diamond. It's important to note that these flaws are typically only visible when using a 10x magnifying tool. The scale for diamond clarity goes from "flawless" (FL) to "included" (I), with categories like VS1 (Very Slightly Included), VS2, and SI1 (Slightly Included) falling in between. Diamonds with these grades usually have flaws that can only be seen under 10x magnification, making them practically perfect to the naked eye - a great feature for anyone admiring your ring!

Optimal Clarity Range for a 0.4 carat cushion cut diamond ring

Choosing a diamond in the VS2-SI1 clarity range for your 0.4 carat cushion cut diamond ring can result in significant savings, potentially reducing the total price by as much as $813. While we highly recommend the VS2 clarity for its excellent value and clarity, it is important not to dismiss SI1 diamonds. With just a few minutes of searching through the available options, you can find SI1 diamonds that appear almost flawless.

One more important tip! Always avoid "cloudy"

This one is simple. Always avoid cloudy diamonds found in the GIA certificate. This is the one flaw that really matters for brilliance. 
☆ These diamonds have identical carat, cut, & color 
Not Recommended
Go with this clarity
FL
IF
VVS1
VVS2
VS1
VS2
SI1
‹ drag left or right ›

FL - Flawless

Cost - $1,386 This diamond is flawless, without any imperfections, but considering its price, it's quite extravagant. Savings - You could save $741 - $840 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

IF - Internally Flawless

Cost - $1,260 This diamond is internally perfect, which means there are no flaws inside it, although there might be some on the surface. It's quite extravagant. Savings - You could save $615 - $714 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

VVS1

Cost - $1,260 This diamond is almost flawless, but considering its price, it's still excessive. Savings - You could save $615 - $714 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

VVS2

Cost - $920 These diamonds are really nice, but we suggest going for a lower clarity. Savings - You could save $275 - $374 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

VS1 - Very Slightly Included

Cost - $724 If you are able to find a fantastic deal on a VS1, that's wonderful. However, the clarity levels that come after that provide the ideal balance between price and quality. Savings - You could save $79 - $178 with a VS2, SI1, or SI2 diamond

‹ drag left or right ›

VS2 - Very Slightly Included

Cost: $645 Total Savings: $79 - $615 When it comes to both quality and price, you won't find a better deal than this diamond clarity. These diamonds are unmatched in their flawless appearance, making them look absolutely perfect to anyone's eye. There are no visible faults in most of these diamonds, so you can trust that they are of the highest quality.
‹ drag left or right ›

SI1 - Slightly Included

Cost: $573 Total Savings: $151 - $687 You won't find a better price for diamond clarity than this. Remember, not all SI1 diamonds are the same. While some might let you down, many of them are absolutely stunning and could easily be mistaken for a VS2.

Lesson 3 - Color

The color of the diamond has a significant impact on the price of a cushion cut diamond ring weighing 0.4 carats.

⊗ Up to $213 savings with these tips
Watch us save thousands by purchasing diamonds in the right range

What is Color?

Diamond color is determined by the presence or absence of a yellow hue. The GIA rates diamond color on a scale from D (no color) to Z (light yellow or brown). When it comes to making jewelry, diamonds that are close to colorless, falling within the G-H range, are typically used. It can be difficult to spot any minor traces of color in these diamonds unless they are compared to higher-graded ones. It's important to note that the differences in diamond color are usually extremely subtle and may go unnoticed by someone without training. However, in larger diamonds, the color may become more noticeable. A diamond within the G-H range, which is almost colorless, will appear that way and be priced more favorably compared to diamonds that are more colorless.

Optimal Color Range For A 0.4 Carat Cushion Cut Diamond Ring

Selecting the appropriate color grade for a 0.4 carat cushion cut diamond ring can lead to significant cost reductions. Instead of paying premium prices for diamonds graded D-F, consider opting for a diamond within the G-J range. This decision can still yield an exquisite piece while saving you up to $213, in addition to any savings acquired through smart clarity choices. When it comes to more intricate designs such as a halo diamond ring featuring numerous smaller diamonds encircling the main stone, it is advisable to choose a central diamond within the G-H color range. This approach helps prevent any noticeable color contrast that may arise with I-J graded diamonds in contrast to the smaller, generally colorless or near-colorless diamonds found in the halo.
Clearest Color
Best Value
Sometimes Ok
D
E
F
G
H
I
J
< drag left or right >

D color

Cost - $688 This diamond is colorless, meaning it has no hints of yellow, you can find these at a good price, but it is not as common. Savings - You could save $116 - $151 with a G or H colored diamond
‹ drag left or right ›

E color

Cost - $646 An E color diamond is a rare, colorless gem of exceptional beauty and value. You can sometimes find them at a great price. Savings - You could save $75 - $110 with a G or H colored diamond
‹ drag left or right ›

F color

Cost - $608 These are near-colorless with only slight traces of color, making it an attractive choice. You'd really have to look closely to figure it out Savings - You could save $36 - $71 with a G or H colored diamond
‹ drag left or right ›

G color

Cost - $571 These are near-colorless with only slight traces of color, making it an attractive choice for it's quality and price. You'd really have to look closely to notice any color Savings - You could save $34 with an H colored diamond
‹ drag left or right ›

H color

Cost - $537 Total Savings: $34 - $151 These are near-colorless with only slightly more noticable hint of color, further making it an attractive choice for it's quality and price. You'd need to have a trained eye to see the color flaw in this one without having a colorless diamond next to it.
‹ drag left or right ›

I color

Cost - $505 Total Savings: $66 - $183 These begin to have a bit more noticable hint of color especially when next to colorless diamonds. These still have unnoticable color if placed on a solitaire ring, but we do not recommend these on a halo ring.
‹ drag left or right ›

J color

Cost - $474 Total Savings: $97 - $213 These also have a slightly more noticable hint of color especially when next to colorless diamonds. These still have unnoticable color if placed on a solitaire ring, but we do not recommend these on a halo ring.

Lab Grown Diamonds

Lab grown diamonds can often cut prices in half and no one will ever notice the difference. 

Lesson 4 - Lab Grown
Save up to 85% on your diamond ring.

Save up to $400 on your 0.4 carat cushion cut diamond ring with the choice of a lab grown diamond.

Lab-grown diamonds, which are created in a lab rather than mined from the earth, have the same visual qualities as diamonds found in nature. They are produced in a more environmentally friendly and ethical manner. Additionally, lab-grown diamonds are more readily available and therefore much more affordable. In fact, the cost of a lab-grown diamond can be up to 85% lower than that of a comparable natural diamond.

Having a lab-grown diamond can minimize your financial loss if you need to sell your 0.4 carat cushion cut diamond ring.

Selecting the appropriate color grade for a 0.4 carat cushion cut diamond ring can lead to significant cost reductions. Instead of paying premium prices for diamonds graded D-F, consider opting for a diamond within the G-J range. This decision can still yield an exquisite piece while saving you up to $213, in addition to any savings acquired through smart clarity choices. When it comes to more intricate designs such as a halo diamond ring featuring numerous smaller diamonds encircling the main stone, it is advisable to choose a central diamond within the G-H color range. This approach helps prevent any noticeable color contrast that may arise with I-J graded diamonds in contrast to the smaller, generally colorless or near-colorless diamonds found in the halo.
Explore Lab Grown 

Lesson 5 - Carat / Size

When you are looking for your diamond ring, focus your money on the carat size.

Why is Carat Important?

Let's be honest about diamond rings. The main focus is on the size of the center diamond, isn't it? And guess what, ladies agree! Surveys reveal that the size of the diamond is their top priority. Considering that the carat weight determines the diamond's size, we suggest allocating your budget accordingly.
Watch us compare sizes and help you visualize what you want. 

When looking to buy a cushion cut diamond ring, try to find one within the 0.4 carat range.

We suggest considering diamonds that range from 0.36 to 0.44 carats. This will give you a variety of prices to compare, without a significant difference in size.
Hand Diamond

1 carat

Explore More Diamond Weights

Lesson 6 - Cut

Don't underestimate the importance of the cut when it comes to a diamond's sparkle. Ensure you choose an ideal or excellent cut for your 0.4 carat cushion cut diamond ring.

Find out why cut makes diamonds sparkle and why you want ideal or excellent cut diamonds.

What is Cut?

Are you in search of the finest 0.4 carat cushion cut diamond ring out there? Keep in mind that it's the cut that truly makes a difference - the flawless and accurate facets of the diamond - as they are what give it that extra sparkle and radiance.

The undisclosed secret of diamond companies

You might think that an 'Ideal' cut diamond, which is crafted to give maximum sparkle by having perfect proportions, would be the priciest option. However, that is not always true. Sometimes, a 'Fair' cut diamond with similar carat, color, and clarity can have a higher price tag. It may seem confusing, but diamonds that are poorly cut can actually look bigger while lacking the desired sparkle and brilliance. A diamond without sparkle is comparable to a phone with no signal.

Here's a crucial tip: always opt for GIA Certified Excellent Cut Diamonds (also known as "Ideal" Cut).


Never Buy These
Definitely Buy These
Fair
Good
Very Good
Ideal
Excellent
‹ drag for sparkle ›

Fair Cut Diamond

Look at that dull sparkle... not much to write home about. Stay away from these.
‹ drag for sparkle ›

Good Cut

Still pretty bland in the sparkle area... stay away from these. 
‹ drag for sparkle ›

Very Good Cut

Getting better, but you don't save much money to  
‹ drag for sparkle ›

Ideal Cut

The is as low as you should go
‹ drag for sparkle ›

Excellent Cut

Blue Nile calls it Astor, James Allen calls it True Hearts, and Brilliant Earth calls it Truly Brilliant. 

Regardless, excellent cut diamonds have incredible sparkle.

Lesson 7 - Shape

Not all diamond shapes are equally sparkly; some shapes can give the illusion of a higher cost in 0.4 carat cushion cut diamond rings.

What is Diamond Shape?

The shape of a diamond determines its style. There are various shapes to choose from, like round, oval, or cushion. Different shapes have different effects on the appearance of the diamond. Some shapes make the diamond look bigger, while others enhance its sparkle and timeless beauty. In this section, you can use our shape tool to explore a collection of 0.4 carat diamond rings that feature a range of shapes.

What shape to choose?

It's important to recognize that certain diamond cuts can give off the illusion of a bigger gem, and there are some cuts that are currently in style. Nevertheless, the most important decision is the one that truly speaks to you. If you're unsure about which cut to go for, think about getting a brilliant cut diamond. This includes shapes like Round, Marquise, Princess, Cushion, Oval, Pear, and Radiant. Out of all these options, Round diamonds are the ones that get chosen most frequently, while Oval and Marquise cuts can make a diamond look bigger without increasing the carat weight.
Watch us compare shapes so you can see exactly what style you prefer. 

Explore other diamond shapes

Try out different diamonds

Hand Diamond
Round
Marquise
Princess
Emerald
Cushion
Oval
Pear
Asscher
Radiant
Heart

Lesson 8 - Setting

The appearance of a 0.4 carat cushion cut diamond ring can vary significantly depending on the brand.

What is setting?

The band, which is commonly referred to as the part that holds the diamond, is typically crafted from gold and is available in white, yellow, or rose gold colors. Additionally, platinum can also be chosen as an alternative material for the band. The setting plays a crucial role in determining the overall appearance of your 0.4 carat cushion cut diamond ring. It provides a chance to showcase your individual taste. Below, we have listed the three most popular settings. Regardless of your choice, it is recommended to opt for 14k gold. Continue reading to discover the reasons behind this preference.
The setting or band is really important for making your diamond look bigger and better. 

We suggest opting for a 14K gold band for your ring.

Here's a crucial rule to follow. Avoid choosing 18k or 24k gold for your setting. It's better to opt for 14k gold. Despite 18k and 24k gold being more pure, they are considerably softer and prone to bending. If the setting that secures your valuable diamond bends excessively, the chance of the diamond becoming loose and falling out rises significantly. Numerous individuals have faced this issue.

Solitaire Setting - A Slim Band Accentuates the Look of a Larger Diamond

According to surveys, many women prefer a bigger diamond. If you want to emphasize the size of a 0.4 carat cushion cut diamond ring, consider a Solitaire setting with a delicate and narrow band. The difference between the thin band and the substantial diamond can create the illusion of a larger stone. Including small accent diamonds along the band can add an elegant touch without overshadowing the main diamond.

Halo: Enhance Your Diamond's Size with Small Diamonds

To create the illusion of a larger appearance for your 0.4 carat cushion cut diamond ring, you may want to think about using a halo setting. The smaller diamonds encircling the central stone will boost its brightness and make it seem bigger. Another option is to go for a double halo setting, which will create an even more striking illusion. When combined with a slender band, this can turn a smaller diamond into a visually larger and impressively extravagant gem.

Ensure that the main diamond remains the center of attention.

Most women prefer their diamond to look big. A fancy or wide band might take away from the diamond's size and make it seem smaller. If you want your 0.4 carat cushion cut diamond ring to be the main attraction, a simpler band would be a good option. However, if you value the ring's overall design, a more intricate band could be the better choice. Just keep in mind that this might diminish the diamond's standout look.

Build a Custom 0.4 carat cushion cut diamond ring Starting with Our Curated Diamond Selections For The Best Deals

Creating a unique and personalized piece of jewelry is an exceptional experience, allowing you to design a piece that truly embodies your individual style and personality, all at a more affordable price compared to purchasing from a store. Teaming up with renowned jewelry companies such as Brilliant Earth, James Allen, and Blue Nile, you have the freedom to select every detail of your ring, from the diamond's shape to the band's design.
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Watch us take you through the entire building process on our favorite websites.

Purchase your diamond ring online from one of our reliable partners. Each link will lead you to the greatest deal on a diamond ring.

We have audited every company, and all the Shop Now links are designed to take you directly to the top deals for the most popular diamonds. Essentially, these links have our unique settings for each website to assist you in finding the best deals for your needs. Take advantage of a wide variety of choices, personalized rings, and outstanding customer service.

Our Money Saving Links

Watch us compare pricing with retail stores and our favorite online brands

Ease of Use
Pricing
Selection
Customer Service
Best overall experience, great selection, 24/7 customer support
Ease of Use
Pricing
Selection
Customer Service
Another excellent website for very well priced diamond rings.
Ease of Use
Pricing
Selection
Customer Service
They focus on ethically sourced diamonds. Best option for karma free rings
Ease of Use
Pricing
Selection
Customer Service
They focus on ethically sourced diamonds. Best option for karma free rings
Ease of Use
Pricing
Selection
Customer Service
Mostly here to show you how retail companies are not high quality. 

Virtual Appointment

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Book Appointment

Frequently Asked

Did you want to know even more? Wow you're a great student!

How much is a 0.4 carat cushion cut diamond ring worth?

A 0.4 carat cushion cut diamond ring is worth around $700 on average, with a price range between $370 and $1,260.

How big is a 0.4 carat cushion cut diamond ring?

A 0.4 carat cushion cut diamond ring has a size of approximately 4.8mm in diameter. This size is slightly smaller than a 0.9 carat cushion cut diamond ring, which has a diameter of around 5.9mm. On the other hand, it is slightly larger than a 0.1 carat cushion cut diamond ring, which has a diameter of about 3.4mm.

What does a 0.4 carat cushion cut diamond ring look like like on a hand?

A 0.4 carat cushion cut diamond ring on a hand appears smaller in size compared to larger diamonds. It has a width of approximately 4.8mm, occupying around 28.6% or slightly less than one-third of the finger's width.

What is the price of a 0.4 carat cushion cut diamond ring?

The price of a 0.4 carat cushion cut diamond ring falls within the price range of $370-$1,260.

Is a 0.4 carat cushion cut diamond ring good enough?

Yes, a 0.4 carat cushion cut diamond ring can be considered good enough. While it may not be as large as a 2 carat diamond, it can still be visually appealing and have its own unique charm. The cushion cut is known for its soft and romantic appearance, and a well-cut diamond of this size can still sparkle and catch the light beautifully. Ultimately, the quality and craftsmanship of the ring, as well as personal preferences, will determine if it is good enough for an individual.

Is a 0.4 carat cushion cut diamond ring big?

No, a 0.4 carat cushion cut diamond ring is not considered big. The average carat weight for a diamond engagement ring is about 1.2 carats, so a 0.4 carat diamond is significantly smaller. It may still be a beautiful and elegant choice, but it will be more subtle and delicate in appearance.

What does a 0.4 carat cushion cut diamond ring weigh?

A 0.4 carat cushion cut diamond ring weighs 0.08 grams.

Should I get a 0.4 carat cushion cut diamond ring?

A 0.4 carat cushion cut diamond ring is a popular choice for its smaller size, unique shape, and elegant appearance.

Is a 0.4 carat cushion cut diamond ring too big?

A 0.4 carat cushion cut diamond ring is considered small compared to the average size.

Is a 0.4 carat cushion cut diamond ring small?

A 0.4 carat cushion cut diamond ring may be considered small compared to larger carat sizes. However, the size of the diamond can also be influenced by the shape and cut. A cushion cut diamond tends to have a larger appearance due to its rounded corners and larger facets, so it may appear larger than other diamond shapes of the same carat weight. Ultimately, whether the ring is considered small or not is subjective and depends on personal preferences.
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