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0.3 carat round diamond ring Buying Guide

Discover how to save as much as $352 with our guide.
This well-designed guide will teach you how to make the most of your money when buying a 0.3 carat round diamond ring. It provides advice on which aspects are worth investing more in and which ones can help you save. Additionally, it points out exactly where you can find the ring you desire or potentially explore a better alternative.
Looking to buy right away without learning?
We have chosen the best deals on 0.3 carat round diamond rings from leading online sellers. Take a look at our selections using the links provided below.

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

Purchase a premium 0.3 carat round diamond ring at the lowest price.

In the upcoming lessons, we will guide you on maximizing the size and sparkle of your 0.3 carat round diamond ring without spending excessively. Additionally, we'll assist you in avoiding any potential deception from diamond companies.
Average Price
$357.73
Price Range
$260-$700
Our Max Savings
$352
Lessons 1-4  ∴  Save Money 
Lessons 4 & 5  ∶  Spend Money 
Lessons 6-8  ∴  Personalize & Decide 
⤫ 40% Cash Savings

Lesson 1

Buying Online

Diamond rings are much more affordable when bought online. Brick-and-mortar stores can be up to 40% more expensive and offer a limited range of options.
$340 Cash Savings

Lesson 2

Clarity

Our clever clarity tips can potentially cut your diamond ring costs in half. We're dedicated to assisting you in saving a significant amount.
$90 Cash Savings

Lesson 3

Color

The color of a diamond plays a big role in how much it costs. We'll assist you in understanding when you can take advantage of this factor to save money.
⤫ 85% Cash Savings

Lesson 8

Lab Grown

You can save an incredible 85% on a 0.3 carat round diamond ring by selecting a lab-grown one. However, keep in mind that selling it might be challenging.
☺ Spend Money

Lesson 4

Carat Weight / Size

Since women tend to prefer bigger diamonds, it would be wise to allocate more of your budget towards that. We are here to assist you in maximizing the size of your diamond while finding ways to save money in other aspects.
☺ Spend Money

Lesson 5

Cut, Sparkle & Brilliance

The cut of a diamond is the most important factor that determines its appearance. It's not advisable to compromise on this aspect to save money because it is what gives the diamond its sparkle and brilliance.
≔ Personalize

Lesson 6

Shapes

Every shape gives a diamond ring a distinct appearance and sparkle. We will help you understand the unique look and shine of each shape.
≔ Personalize

Lesson 7

Setting / Band

Choosing a solitaire ring can help you save money and create the illusion of a larger diamond. However, it ultimately depends on your personal preference.

Lesson 1 - Buy Online
Up to 40% savings here

Get your 0.3 carat round diamond ring online and save up to 40% 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 provided below to begin creating your own affordable, high-quality 0.3 carat round diamond ring!

If you're ready to start shopping right now, our links will take you directly to the most reputable online diamond companies where you can find the cheapest diamonds with great value.

Our Money Saving Links

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

Ease of Use
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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

When shopping for a 0.3 carat round diamond ring, the diamond's clarity is the major factor that affects its pricing.

⊗ Up to $426 savings with these tips
Watch us save thousands of dollars by simply selecting the right clarity range.

What is Clarity?

In the world of diamonds, clarity refers to how noticeable any imperfections are. The main focus is on how easily these flaws can be seen, as most of them can only be detected with a 10x magnifying tool. A diamond's clarity can range from 'flawless' (FL) to 'included' (I), with various classifications like VS1 (Very Slightly Included), VS2, and SI1 (Slightly Included) falling in between. These types of diamonds typically have imperfections that can only be seen under 10x magnification. So, to the naked eye, they will appear completely clear – meaning anyone admiring your ring won't have a clue about any flaws!

Optimal Clarity Range for a 0.3 carat round diamond ring

Choosing a diamond in the VS2-SI1 clarity range when purchasing a 0.3 carat round diamond ring can result in significant savings, potentially reducing the total price by up to $426. We suggest considering the VS2 diamonds for their excellent balance between price and clarity. However, it is important not to disregard SI1 diamonds, as with a brief examination of available options, you can discover 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 - $770 This diamond is in perfect condition, without any flaws, but when you look at the cost, it's just too expensive. Savings - You could save $408 - $424 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

IF - Internally Flawless

Cost - $700 This diamond is perfectly clear inside without any flaws, but it might have some imperfections on the outside. Even these imperfections seem unnecessary. Savings - You could save $338 - $354 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

VVS1

Cost - $700 The diamond is nearly flawless, but considering its cost, it's still overly expensive. Savings - You could save $338 - $354 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

VVS2

Cost - $400 These diamonds are incredibly beautiful, but we still recommend choosing ones with slightly less clarity. Savings - You could save $38 - $54 with a VS2, SI1, or SI2 diamond
‹ drag left or right ›

VS1 - Very Slightly Included

Cost - $384 If you happen to come across a really good offer for a VS1, that's definitely a bonus. However, if you're looking for the best combination of price and quality, it would be wise to consider one of the clarity levels that follow. Savings - You could save $22 - $38 with a VS2, SI1, or SI2 diamond

‹ drag left or right ›

VS2 - Very Slightly Included

Cost: $362 Total Savings: $22 - $338 This diamond clarity provides the perfect balance of quality and cost-effectiveness. When it comes to these diamonds, you'll be hard-pressed to find any imperfections, making them appear flawless.
‹ drag left or right ›

SI1 - Slightly Included

Cost: $344 Total Savings: $40 - $356 You won't find a better choice for diamond clarity at this price. But remember, not all SI1 diamonds are the same. Some may not meet your expectations, but many of them are absolutely stunning and could easily be mistaken for a VS2.

Lesson 3 - Color

The color you choose for a 0.3 carat round diamond ring significantly affects its price.

⊗ Up to $128 savings with these tips
Watch us save thousands by purchasing diamonds in the right range

What is Color?

Diamonds can come in different colors, ranging from slightly yellowish to completely colorless. The Gemological Institute of America (GIA) assigns grades to diamonds, with D indicating no color and Z indicating yellow or brown. When it comes to jewelry, diamonds typically have a slight color and fall within the G-H range. The subtle traces of color in these diamonds can only be detected when compared to higher grade diamonds like D, E, or F. While smaller diamonds may have less noticeable color, larger diamonds in the G-H range, such as a round diamond, will still appear almost colorless and be less expensive than a D-grade diamond, which is completely colorless.

Optimal Color Range For A 0.3 Carat Round Diamond Ring

Choosing the right color grade for a 0.3 carat round diamond ring can result in significant savings. Rather than paying premium prices for D-F graded diamonds, consider selecting a diamond in the G-J range. This decision can still result in a stunning ring while saving you as much as $128, in addition to any savings from making informed decisions about clarity.
Clearest Color
Best Value
Sometimes Ok
D
E
F
G
H
I
J
< drag left or right >

D color

Cost - $413 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 $70 - $91 with a G or H colored diamond
‹ drag left or right ›

E color

Cost - $388 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 $45 - $66 with a G or H colored diamond
‹ drag left or right ›

F color

Cost - $365 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 $22 - $42 with a G or H colored diamond
‹ drag left or right ›

G color

Cost - $343 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 $21 with an H colored diamond
‹ drag left or right ›

H color

Cost - $322 Total Savings: $21 - $91 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 - $303 Total Savings: $40 - $110 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 - $285 Total Savings: $58 - $128 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 $200 on your 0.3 carat round diamond ring with the choice of a lab grown diamond.

Lab-grown diamonds, also referred to as man-made diamonds, offer the benefit of having the same appearance as natural diamonds, but they are produced in a way that is more environmentally friendly and morally conscious. Moreover, lab-grown diamonds are more easily accessible compared to natural diamonds, resulting in much more affordable prices. In fact, a lab-grown diamond can be as much as 85% less expensive than a similar natural diamond.

If you ever decide to sell your 0.3 carat round diamond ring, choosing a lab-grown diamond can help minimize your financial loss.

Choosing the right color grade for a 0.3 carat round diamond ring can result in significant savings. Rather than paying premium prices for D-F graded diamonds, consider selecting a diamond in the G-J range. This decision can still result in a stunning ring while saving you as much as $128, in addition to any savings from making informed decisions about clarity.
Explore Lab Grown 

Lesson 5 - Carat / Size

When shopping for your diamond ring, make sure to prioritize your budget towards carat weight.

Why is Carat Important?

Imagine a diamond ring. What's the main attraction? The size of the center diamond, of course. It's no secret - women agree that size is important according to surveys. And since the carat weight determines the size of the diamond, that's where we suggest you spend your money.
Watch us compare sizes and help you visualize what you want. 

Carat Range: The Perfect Option for Your 0.3 carat round diamond ring.

It would be a good idea to check out diamonds in the 0.27 to 0.33 carat range. This way, you can get an idea of the various price ranges without compromising much on size.
Hand Diamond

1 carat

Explore More Diamond Weights

Lesson 6 - Cut

Always consider the cut of the diamond as it determines its sparkle. When buying your 0.3 carat round diamond ring, go for an ideal or excellent cut.

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

What is Cut?

When you're looking for a gorgeous 0.3 carat round diamond ring, the cut becomes crucial. It determines the accuracy and flawlessness of the diamond's angles, impacting the overall shine and radiance of the ring.

What diamond companies don't want you to know

Many people assume that an 'Ideal' cut diamond, which is praised for its ability to sparkle brilliantly because of its perfect proportions, will always cost the most. However, this isn't always the case. In some situations, a 'Fair' cut diamond with the same carat, color, and clarity can actually be more expensive. This is because poorly cut diamonds may appear larger, but they lack the stunning sparkle and brilliance that you're looking for. A diamond that lacks sparkle is similar to a clock without hands.

Remember this final advice: stick with GIA Certified Excellent Cut Diamonds (commonly called "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

The sparkle of a diamond can vary based on its shape, and certain shapes can make 0.3 carat round diamond rings appear more expensive.

What is Diamond Shape?

The diamond shape refers to the style of the diamond, which can be round, oval, or other shapes. Different shapes can make the diamond look bigger or create more sparkle, giving it a classic and timeless appearance. In this section, you can use our shape tool to explore a variety of 0.3 carat diamond rings with different shapes.

What shape to choose?

Yep, it's true that certain diamond shapes can give the stone a bigger look, and there are definitely some trendy shapes floating around. However, when it comes down to making a decision, concentrate on what really resonates with you and brings you the most joy. If you're not sure which shape to go for, a brilliant cut diamond could be a good choice. It includes Round, Marquise, Princess, Cushion, Oval, Pear, and Radiant shapes. Round diamonds are classic and never go out of style, but you might discover that Oval and Marquise shapes create the illusion of a larger diamond for the same 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 band has the potential to completely transform the appearance of a 0.3 carat round diamond ring.

What is setting?

Often referred to as the band, the part of the diamond ring that surrounds the center stone is known as the setting. Typically, it is crafted from gold in different shades like white, yellow, or rose gold. Another option to consider is a platinum setting. The setting plays a vital role in the overall appearance of your 0.3 carat round diamond ring. This is where you can showcase your personal style preferences. Below, we have highlighted the three most popular setting choices. Regardless of which one you choose, we suggest sticking with 14k gold. We will explain the reasoning behind this advice later on.
The setting or band is really important for making your diamond look bigger and better. 

Ensure that your band is made of 14K gold.

Remember this important guideline. Don't use 18 karat or 24 karat gold for your setting. Go with 14 karat gold instead. Even though 18 karat and 24 karat gold are more pure, they are noticeably less durable and prone to bending. If your precious diamond's setting bends too easily, there's a significant risk of the diamond becoming loose and falling out. This is a common problem for many people.

Solitaire Ring - A Thin Band Makes Your Diamond Appear Bigger.

Survey data shows that many women aspire to own a big diamond. If you want to make a 0.3 carat round diamond ring appear larger, you might want to think about using a Solitaire setting with a thin and graceful band. The contrast between the slim band and the sizeable diamond can make the gem appear even bigger than it is. To further amplify this effect, you could add small accent diamonds along the band for a touch of sophistication that won't take away from the main diamond.

Halo: Give Your Diamond the Illusion of Size with a Bunch of Smaller Ones

To make your 0.3 carat round diamond ring stand out more, you might want to think about using a halo setting. This technique involves using smaller diamonds to surround the main diamond, which boosts its shine and makes it look bigger. If you want an even more pronounced effect, a double halo setting is the way to go. With a slender band alongside it, this setting can make even a small diamond appear much larger, creating a more lavish and impressive piece.

The main diamond should be the focal point.

Many women desire a diamond that looks big and full. If the band of the ring is too fancy or wide, it might draw attention away from the diamond and make it seem smaller. If you want to showcase your 0.3 carat round diamond ring, a simpler band would be a good option. However, if you value the overall design of the entire ring, a more detailed band might be the perfect choice. Just remember, this could diminish the diamond's standout quality.

Build a Custom 0.3 carat round diamond ring Starting with Our Curated Diamond Selections For The Best Deals

Creating a one-of-a-kind item is a special journey that lets you shape a piece of jewelry that embodies your distinct style and personality. And the best part? It won't break the bank like buying from a physical store. With reputable online jewelers like Brilliant Earth, James Allen, and Blue Nile, you can tailor every element of your ring to your liking, 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.

Protect your diamond ring by purchasing it online through one of our trusted partners. Each link will lead you to the best deal available.

We have evaluated each company and the Shop Now links are arranged to offer you the best prices for high-quality diamonds. Specifically, these links are designed with specific preferences on each website to display the greatest deals for your needs. You will be able to choose from a wide range of options, including personalized rings, and enjoy outstanding customer support.

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

Let us help you get help by the industry leaders. When you click the button below we will help you choose where to set up your appointment.
Book Appointment

Frequently Asked

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

How much is a 0.3 carat round diamond ring worth?

A 0.3 carat round diamond ring is worth an average of $400, with a price range of $260 to $700.

How big is a 0.3 carat round diamond ring?

A 0.3 carat round diamond ring has a diameter of 4.2mm. This size is smaller than a 0.8 carat round diamond ring, which has a diameter of 6.0mm. On the other hand, it is slightly larger than a 0.2 carat round diamond ring, which has a diameter of 3.8mm.

What does a 0.3 carat round diamond ring look like like on a hand?

A 0.3 carat round diamond ring is relatively small and delicate on a hand. It has a width of approximately 4.25mm, occupying around 25.4% or a quarter of the finger's width.

What is the price of a 0.3 carat round diamond ring?

The price of a 0.3 carat round diamond ring falls within the range of $260-$700.

Is a 0.3 carat round diamond ring good enough?

Yes, a 0.3 carat round diamond ring can be considered good enough depending on personal preferences. While it may not have the same visual impact as larger carat diamonds, it can still be beautiful and elegant, especially if it has a high-quality cut, good clarity, and is skillfully crafted into its ring and setting. Ultimately, the choice of diamond size should be based on individual taste and budget.

Is a 0.3 carat round diamond ring big?

No, a 0.3 carat round diamond ring is not considered big. The average carat weight for a diamond engagement ring is about 1.2 carats, so a 0.3 carat diamond is significantly smaller. While it may still be beautiful, it will likely appear more delicate and subtle on your finger.

What does a 0.3 carat round diamond ring weigh?

A 0.3 carat round diamond ring weighs 0.06 grams.

Should I get a 0.3 carat round diamond ring?

A 0.3 carat round diamond ring is a popular choice for its affordability, simplicity, and versatility.

Is a 0.3 carat round diamond ring too big?

A 0.3 carat round diamond ring is considered small in size.

Is a 0.3 carat round diamond ring small?

A 0.3 carat round diamond ring can be considered small. The size of the diamond will appear smaller on the finger compared to larger carat sizes. However, factors such as the cut, color, and clarity of the diamond can also affect its overall appearance and perceived size.
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