1.5 Carat Diamond Rings Buying Guide – Practical Tips [2021]

1.5 carat diamond rings

You have everything planned out. The suit you’ll wear. The cozy and romantic spot. The food and the flowers. Except for one thing – the diamond engagement ring!

Next to the lady, you would want to have the 1.5-carat diamond ring as the center of the event. The whooping ring that undoubtedly will make her say “Yes!”

We understand. Picking the right ring can be daunting, especially if you are entirely clueless when it comes to pieces of jewelry. Admit it. Sometimes, we don’t even know what we are looking for.

We’re sure you simply want to have that ring that will tell her how much you love her. And, that ring is the 1.5-carat diamond engagement ring – which you’ll learn about as you read along. 

What Is A 1.5 Carat Diamond?

A 1.5-carat diamond is one that hits 1.5 off the weighing scale. 1-carat stones hit the scale at 200 milligrams. So does 2-carat at 400 milligrams. But, a 1.5-carat nestles seamlessly between 200 and 400 milligrams.

Round carat sizes are by tradition more popular. However, 1.5-carat diamonds make an ideal settlement for diamond buyers looking for something larger than 1-carat but wouldn’t pay the hefty expense of a 2-carat stone.

1.5-carat diamond rings look elegant, dramatic, and beautiful. They look more prominent than the average diamond and are available from both local and online jewelry stores. As with most diamonds, it can vary hugely in appearance, quality, and practicality.

How are 1.5 Carat Diamonds Priced?

Generally, a 1.5-carat diamond ring can cost between $4,000 to $25,000 or more. Its pricing varies on significant factors – the diamond’s 4Cs, the shape, and the ring setting in which the diamond is mounted.

1.5-carat diamonds below $8,000 may have noticeable imperfections or poor color that’s perceptible to your eye. Above the $12,000 mark is of higher quality. Then again, the difference between a sub $12,000 1.5-carat diamond and one that is twice as costly is hard to detect sans a jeweler’s loupe and proper illumination.

Take Blue Nile’s 1.52-Carat Round Cut Diamond, for instance. It sells at $10,157, and although it has imperfections and not entirely colorless, its flaws aren’t noticeable to the naked eye, even in magnified and well-lit photos.

Ideal Cut, H Color. VS1 Clarity

On the other hand, their 1.50-carat diamond, which also has an ideal cut but has a color grade of flawless D and clarity grade of VVS2, sells at $16,159 – slightly higher than the first diamond ring. It costs about 75% more than the first one. Is it higher quality? Yes. Do you see flaws noticeable with your naked eye? Not really.

1.55-Carat Round Cut Diamond
Ideal Cut, D Color, VVS2 Clarity

Per se, we discourage going too far below the $8000 mark if you are going for a 1.5-carat diamond. The recommended price range that will surely give you value for your money is $8,000 to $12,000. This price range lets you buy a gorgeous 1.5-carat diamond without overpaying.

Here’s a price chart for 1.5-carat diamonds, to give you a better understanding. Notice how each diamond is priced according to color and clarity grades. Single diamond prices may differ quite often, even for diamonds that closely resemble each other. This is why it is a best practice to compare individual diamonds so you can get the best deal.









$17,000 – 30,000

$13,000 – 24,000

$13,000 – 22,000

$11,000 – 20,000

$11,000 – 19,000

$9,000 – 15,000


$17,000 – 26,000

$13,000 – 22,000

$13,000 – 18,000

$12,000 – 19,000

$11,000 – 17,000

$8,000 – 14,000


$14,000 – 21,000

$13,000 – 19,000

$11,000 – 16,000

$11,000 – 16,000

$10,000 – 14,000

$8,000 – 13,000


$12,000 – 20,000

$11,000 – 17,000

$10,000 – 14,000

$10,000 -13,000

$10,000 -14,000

$8,000 – 13,000


$10,000 – 13,000

$9,000 -13,000

$10,000 – 13,000

$9,000 – 12,000

$9,000 – 12,000

$8,000 – 12,000


$9,000 -11,000

$8,000 – 11,000

$8,000 – 11,000

$8,000 – 10,000

$7,000 – 11,000

$7,000 – 10,000


$7,000 – 10,000

$7,000 – 10,000

$7,000 – 9,000

$7,000 – 9,000

$6,000 – 10,000

$6,000 – 9,000

1.5 Carat Diamond’s Cut, Clarity, and Color


Are you looking to get a sparkly and full of life diamond or lifeless and dull? Anyone like me has an obvious answer – sparkly and full of life, of course.

Pretty sure a sales clerk must have told you that cut is not as impactful as color and clarity are in diamonds. It is. Many jewelers will say to you that better-looking color and better clarity guarantee a beautiful-looking diamond.

It is plain misleading.

Color and clarity are but two things that add to the overall beauty of a diamond. Even if it has the best color and clarity combination, it will look significantly worse than a well cut diamond with lower color and clarity grade if it is cut poorly.

Take for example, these two diamonds from James Allen. At a glance, you can probably tell which one is more appealing to look at. Although the first one has a color grade of D, which most would assume to equate best color and clarity properties, it suffers from poor cut proportions. Thus, it will give poor performance when it comes to reflecting light.

comparison of 1.5 carat diamond

Its steep depth of 64.9% and a pavilion angle of 41.8 °, makes the diamond face up with a sparse dimension of 7.15 x 7.25 x 4.67 mm. Ask yourself if you are willing to pay a premium for a diamond that appears smaller and doesn’t sparkle well.

The second diamond has a color grade of I and a clarity of VS2. The color grade and clarity contribute to its significantly lower amount. But, if you look at it closely, it faces up at 7.40 x 7.42 x 4.57 mm. The cut definitely made it sparkle better. Thus, making it a lot more appealing to look at.


When buying diamonds within the 1.5-carat range, it is essential to consider color grade. GIA scale grades diamonds from D, the best color grade, to Z or the heavily tinted with yellow or brown color. The more colorless it is, the better the color grade it gets and the higher its value becomes.

Prices can increase significantly with every color grade, sometimes even without a huge difference in appearance between two diamonds.

Take a look at these two 1.5-carat diamonds from Blue Nile with different color grades. The diamond on the right has a color grade of D and has a price tag of $14,000++. It looks colorless and gorgeous. However, placing it beside a 1.5-carat diamond with a color grade of G won’t show many differences – all the more when viewed without magnification.

Its price tag is $3000 lesser than the D color graded diamond.

You may want to limit your search to diamonds in the G to I range, particularly if you are looking for a ring that is made from white gold or platinum. These metals have a tendency to display the color of a diamond the most.

Color grades G, H, and I are considered “Near Colorless.” They appear just as colorless to the naked eye as diamonds in D to F grades, all at a considerably lesser cost.

If you are going with a yellow or rose gold metal for the ring, you can go a little further down the scale. Diamonds with J or K color grade won’t be bad since yellow or rose gold will help conceal any color from the diamond.


Clarity is the diamond’s visual appearance. The GIA scale grades it from IF or internally flawless to I3 or inclusions to the third degree. Generally, the fewer visible inclusions and blemishes are, the higher the clarity grade it gets.

Blemish-free diamonds are extremely rare. And, as with most things, rarity comes with a price. However, you wouldn’t want to pick an inclusion-free diamond just because it is rare. The blemishes these diamonds have are mostly barely visible and impossible to see with the naked eye.

As hinted in the color discussion, it isn’t wise to buy a diamond with the highest clarity grade. It is expensive, and not everyone has a loupe the check whether it has inclusions or not. It is recommended that you choose a diamond that looks clean to your eye – one that has no evident or recognizable blemishes.

To give you an idea, let’s take a look at the two 1.5-carat diamonds below. With an IF clarity grade, the first one looks unflawed. However, the other one with a clarity grade of VS1 also appears as eye-clean as the one on the left.

Eye-cleanliness is specifically crucial in 1.5-carat diamonds. Its large table can make inclusions more visible than they would in smaller-sized stones.

A diamond’s minimum clarity also varies on its shape. Cushion cut does a great job at hiding inclusions. On the other hand, an emerald cut with an extensive table can make blemishes look more evident.

For a 1.5-carat diamond, VS2 clarity grade (or better) is recommended. An eye-clean VS2 clarity diamond will have inclusions, but they’ll appear invisible to the naked eye. In some instances, SI1 clarity might be a good option, too.

1.0 Carat vs. 1.5 Carat Diamonds

1.0 and 1.5-carat diamonds are often compared to each other. Aside from the .5 difference in carat, they are dissimilar in:


1.5-carat round brilliant cut diamonds measure approximately 7.33 mm in diameter, while 1.0-carat diamond sizes at a slightly smaller 6.5 mm diameter. This difference may be slight but is large enough to be noticeable when worn on a finger.

1.50-carat diamond has more presence than a 1-carat diamond. Thus, if you look for a more eye-catching gem and have the money, it is a perfect choice.


Carat weight says a lot in diamond prices. This means that a 1.5-carat diamond is 1.5 times more than the price of a 1.0-carat diamond. For instance, a 1.5-carat diamond with a color grade of I, VS2 clarity, and excellent cut may sell around $8,000, while a 1.0-carat with the same color, clarity, and cut grade will cost about $4000, despite the similarities.


There isn’t any difference when it comes to quality. 1.50-carat diamonds are simply larger and heavier than 1.0-carat diamonds.

2.0 Carat vs. 1.5 Carat Diamonds

If you’re on an $8,000 to $20,000 budget, it can be tempting to go for a higher carat weight diamond. Here’s what you need to know about how 2.0 carat and 1.5-carat diamond differ.


The number suggests that 2.0 is more significant than 1.5. Therefore you’d expect it will look more prominent. However, the difference is not highly noticeable. This means a 2-carat round brilliant cut diamond will have an 8.1 mm diameter, whereas a 1.5-carat’s 7.3 mm.


Pricing for 2.0-carat and 1.50-carat is similar to 1-carat and 1.5-carat. The price difference may be best described with two diamonds where one is 1.5-carat, with I color, and VS2 clarity at $8,000 and the other with the same color and clarity but 2.0-carat weight at $14,000.

Tips In Buying 1.50 Carat Diamond

  1. Go for an excellent or ideal cut.

The cut is a substantial factor in picking a 1.5-carat diamond. The better the cut it has, the more light it will return, resulting in a more stunning look. An excellent cut is a good choice since it gives more vital brilliance and fire.

  1. Keep it at G to I color range.

As we’ve discussed above, diamonds with a G to I color range give better value for your money. They are more practical than picking anything in the D to F range. Diamonds in this range will look just as colorless as natural colorless diamonds but costing a lot less.

  1. Choose a lower color grade when setting with yellow or rose gold.

Yellow and rose gold metals help with concealing the yellow tint of low color grade diamonds. This makes it acceptable to choose anything below the G to I range if you are sticking with these metals.

  1. VS2 clarity grade or better is what you should choose.

VS2 or VS1 offers the best value for your money, particularly for a 1.5-carat diamond. The majority of a 1.5-carat diamond’s inclusions and blemishes are invisible to the naked eye in a VS1 diamond.

  1. Pick the shape you like.

Beauty is in the eye of the beholder. The shape that appeals to you is the perfect shape, and no one can tell otherwise.

  1. Pick a setting that suits your style

The setting has a corresponding impact on the appearance of the ring as with your choice of diamond. Settings with pavé, halo, or side-stone diamonds may affect your choice of a center diamond.

  1. Make sure the diamonds have certified grading reports.

Do not give in when the clerk says you are buying a diamond and not a grading report. While the statement holds true, the grading report is your guarantee that your diamond is what it is said to be.

Where To Buy 1.5 Carat Diamonds

Because of the economics in e-commerce, buying from a trusted online vendor is better than dealing with a brick-and-mortar jewelry store. Online shopping gives you access to a broader selection of diamonds than traditional jewelry stores.

Sellers like James Allen and the Blue Nile offer a vast range of diamonds. Their inventory includes different 1.5-carat diamonds in several beautiful settings. You can be sure you are getting the best diamond with the GIA or AGS certification they have in every stone they sell. Plus, their after-sales service includes a generous return policy and a lifetime warranty.

Custom designs and fancy colors are what Brian Gavin Diamonds and Leibish & Co specialize in. They have a large inventory of exceptional quality diamonds, and you can also reach out to them if you have a design in your mind that you want to see in your fiancé’s ring.


At 1.5-carat, a diamond can look very large. Its sparkle will definitely draw attention. Thus, it is more than enough to make your engagement ring stand out from the rest.

If you’ve picked a 1.5-carat diamond ring with an excellent cut, good color and clarity, and in a lovely setting, then you are just about ready to pop the question!

FAQs (Frequently Asked Questions)

Q: Is a 1.5-carat diamond too big?

A: A 1.5-carat diamond is larger than the average engagement ring. Whether or not it is big depends on – your finger size, diamond shape, and desired ring setting. Classic round solitaire on a size five finger gives you plenty of room to measure up.

1.5-carat diamonds set the balance for size and cost. Although .5 difference in carat doesn’t mean as much, 1.5 carat still reads slightly larger, particularly with specific stope shapes and smaller finger sizes.

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