1.5 Carat Diamond Rings: Price And Buying Guide

Larger than the average diamond, purchasing a 1.5 carat diamond should be nothing short of awesome. It holds great monetary and emotional significance, and that is why it is so essential to be stringent and get it right.
If you have ever laid eyes on a 1.50ct diamond, you will know that this is an impressive size, perfect for an engagement ring. A 1.5 carat diamond makes an undeniable statement; this guide will help you to better understand the minutiae of quality in a diamond of this carat.
1.517ct Diamond Engagement Ring
1.517ct Diamond Engagement Ring

What Is A 1.5 Carat Diamond?

Diamonds are often spoken about in terms of ‘size’, but it is important to note that carat specifically refers to the weight of the diamond. One carat is equivalent to 200mg, with 5 carats equal to a gram.
While a 2 carat diamond costs roughly twice as much as a 1.5 carat diamond costs, a 2 carat diamond looks just 10 percent larger when viewed from above. In terms of face-up size, a 1.5 ct diamond (round cut) measures roughly 7.3mm. However, the exact measurements for any specific 1.50ct diamond can differ based on the diamond’s cut parameters. Shape and cut quality of a diamond will influence how large the diamond appears; for example, elongated diamond shapes often appear larger than round brilliant diamonds, even when equivalent in carat weight.
Furthermore, an expertly cut diamond will deliver maximum light return and sparkle, while a poorly cut diamond will result in a less brilliant, smaller visual size. For most buyers, purchasing a 1.5 carat diamond enables them to get close to the physical size of a 2ct diamond without paying the premium. However, if you are looking for a larger, more bold diamond and have a willing budget, a 2 carat diamond will have more presence, if cut correctly.
Diamond Size

How To Choose Your 1.5 Carat Diamond Using The Four C’s

When it comes to choosing a 1.5 carat diamond, there are some key considerations. As with any diamond purchase, the Four C’s (color, clarity, carat weight, and cut) are an excellent place to begin.
At Whiteflash, we work closely with our customers to understand each individual’s own set of criteria and their particular budget requirements. This allows us to make the very best recommendation.
Although there is a standard that must be upheld in order to find a top performing diamond, there can be flexibility when finding the right 1.5-carat diamond for you.
Unsure of the diamond fundamentals? Explore our Education pages to familiarize yourself with the Four C’s, or speak to one of diamond experts using our live chat service for more insight.


As far as importance goes, color is often the most subjective of all the Four C’s - it is also where many of our customers show the most flexibility after further education.
Diamonds of I and J color may present a warm hue which some customers like and most can’t detect. Even with a large 1.5 carat diamond, the difference is almost totally indistinguishable from the face up in normal lighting conditions.
For a guaranteed, icy white sparkle, we’d recommend anywhere from a D-H color, depending on your budget.
Diamond Colors from D to K
Diamond Color as seen from the side (click image to enlarge)


For 1.5 carat diamond clarity, we recommend a VS2 or above. This grade helps ensure that the diamond is eye-clean and free of obstructive inclusions.
Eye-cleanliness is particularly important in a 1.50ct diamond, as a diamond of this size can make inclusions more visible, especially when compared to a smaller diamond.
Simulated Diamond Clarity Grading Scale from FL to I3
Simulated Representation of the Diamond Clarity Scale
That is why we provide high-res diamond images and 360 videos for all of our in-house diamonds, so you can thoroughly observe your diamond for yourself and get acquainted with every single sparkle.


The cut will always have the biggest impact on your diamond, both aesthetics and price. The better a diamond’s cut, the more light it will capture and return to the eye, creating the remarkable look which diamonds are best known for. Our A CUT ABOVE® super-ideal cut diamonds were created to provide buyers with the ultimate in fire and brilliance.
A CUT ABOVE Hearts and Arrows Round Diamond
1.5ct A CUT ABOVE® Hearts and Arrows Diamond
Cut can be a complex matter and there are lots of characteristics, nuances and features which all make a big difference to the appearance of a diamond. A variety of advanced light performance reports and images must be provided to fully understand the quality of a diamond.
It is important to opt for the best cut your budget allows; it is an area of diamond quality that you must prioritize to ensure you get the best value. We recommend buying certified ideal cut diamond. Diamonds at this carat with an ideal cut will have stronger brilliance, fire and a much more impressive presentation.

The Fifth C – Certification

You should never consider a diamond without a GIA or AGS certificate. They are internationally recognized laboratories that offer consistent and accurate grades, and a diamond’s quality is at best suspect without it.
With our A CUT ABOVE® diamonds, all the hard work has been done for you. You can rest assured they have been graded by only top tier laboratories, and additional advanced light performance analysis is posted with each diamond.

How Do I Purchase The Best 1.5 Carat Diamond?

Going online is the savviest way to get the best diamond quality and get the most value out of your money. It also means you have access to a much larger selection of diamonds than any local jewelry store can offer.
We pride ourselves on being able to work to all budgets, but we also know the desire to have the best of the best can exceed everything else. Fortunately, we have worked to this standard since our inception in the year 2000, and we continue to carry phenomenal diamonds to please even the most knowledgeable diamond enthusiasts.
Notably, our A CUT ABOVE® Collection Series showcases diamonds of extreme rarity – clean, colorless, precision-cut diamonds featuring the very top gemological grades across the board.
These elite treasures are considered collector quality and are some of the rarest and most dazzling in the world. Having the ultimate pedigree, you will notice a significant price increase between these diamonds and others that sit just below the highest grades. If you have the budget for it, these rare diamonds of unmatched sparkle and purity are timeless keepsakes.
1.53ct Diamond Engagement Ring
1.53ct Diamond Engagement Ring

1.5 Carat Diamond Price

Within the recommended grades that we have outlined in the color and clarity section, the lower end of your budget for a 1.50ct diamond would be represented by J/K, VS2/Si1.
Explore the most affordable options that are part of our A CUT ABOVE® super ideal-cut diamonds
The prices are at the lower end of the price range for a 1.50ct diamond, due to lower color grade; which does not mean they are any less beautiful. You still receive certified hearts and arrows with perfect optical symmetry and optimal light performance; the small compromise with color translates to a noticeable difference in price.
G/H VS1 diamonds sit in the center of the most budget-friendly spectrum, yet they more than hold their own in terms of beauty. Even diamond novices can inspect the high-res image of these diamonds and appreciate their visual perfection
VS1 clarity is essentially indistinguishable from Flawless to the naked eye, and the G/H color grades sit comfortably in the middle of the ‘near colorless’ grade range. This gives you the overall quality you desire, at a fair price.
Pro Tip: You can conceal the slight yellow tint of a diamond with a lower color grade by choosing a yellow gold or rose gold band. These metals can assist you in opting for a J or K color grade in order to fit your budget.
Defining the high end of the budget are the elite gems in our A CUT ABOVE® Collection Series. These diamonds of exceptional rarity and exclusivity have strong appeal to the most discerning shoppers, who want nothing but the best.
To maximize your budget don’t be hesitant to consider J or K colors or VS2 or Si1 clarity, so long as cut quality is top of mind throughout the process.
There is no such thing as a super cheap 1.50 carat diamond in a desirable quality; if you find a 1.50 carat diamond with a questionably lower price, it is likely there are quality issues.
Need help choosing a legitimate diamond? Contact us and we’ll help you find the best 1.5 carat diamond for your tastes and budget at Whiteflash.

1.5 Carat Diamond Settings

Vatche 191 Swan Solitaire Engagement Ring
1.505ct Vatche 191 Swan Solitaire Engagement Ring
Classic 4 Prong Solitaire Engagement Ring
1.543ct Classic 4 Prong Solitaire Engagement Ring
Ritani 1RZ2490 Modern Bypass Diamond Engagement Ring
1.524ct Ritani 1RZ2490 Diamond Engagement Ring
The 18k White Gold Legato Micro Pave Ring is a stunning work of art that incorporates our “Legato” head. We have used the very best diamond melee and spare no expense when it comes to the quality of the craftsmanship.
A 1.5 carat diamond can comfortably stand out in even the most intricate of settings. This Verragio Parisian setting features striking rose gold wraps and round brilliant cut melee that enhances any center diamond you may choose.
A well-made setting in a precious metal will keep your diamond secure for years to come. Our extensive portfolio of experienced designers includes something to suit every style. Find the perfect designer ring for your special diamond today at Whiteflash Ideal Diamonds and Fine Jewelry.

Be Inspired By Our Designer Engagement Rings

Find the perfect Designer Ring for your special diamond by clicking the links below, and let us build the ultimate ring for the love of your life!