What Does Carat Mean In Diamonds?

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Investing in dazzling diamonds goes beyond simply buying a piece of jewelry.

It’s about making an investment in the greatest symbol of love, commitment, and timeless elegance. 

One of the most crucial aspects of this investment is understanding diamond carat. 

We’ll walk you through everything you need to know, from the definition and history of carats to practical tips on choosing the right carat weight for your perfect diamond.

Let’s dive in!

What Is A Diamond Carat?

In the diamond world, a carat is a unit of weight. One carat is equal to 200 milligrams or 0.2 grams.

Each carat is then subdivided into 100 ‘points’, allowing precise measurements to the hundredth decimal place. 

The term "carat" comes from the humble carob seed, which early gem traders used as a reference for weight due to their relatively uniform size.

This system, standardized over centuries, is now globally recognized.

This makes it far more straightforward for buyers and sellers to communicate precisely about a diamond's weight. 

Understanding The Difference Between Carat & Size

Here’s where things get a bit tricky: carat weight and diamond size are not the same thing. 

Carat refers to a diamond's weight, whereas size refers to its dimensions. 

Factors like shape, cut, and depth can affect how large a diamond appears.

For example, a well-cut diamond can appear larger and shine infinitely brighter than a poorly cut diamond of the same carat weight.

Although a higher carat weight generally means a larger diamond, the cut of a diamond can significantly impact its visual size.

Choosing the Right Carat Weight

Considerations for Selection

Selecting the right carat weight is a balance of personal preference, budget, and practical considerations.

First, consider the wearer’s finger size: a larger carat weight can be overwhelming on small fingers but a perfect match on larger hands.

Personal style also plays an important role—while some prefer a subtle sparkle, others want a bold, statement piece.

Budget Considerations

Carat weight significantly impacts price. Generally, the higher the carat weight, the higher the price.

However, balancing carat weight with other diamond characteristics like cut, clarity, and color can help you get the most value from your budget. 

Remember: a smaller, well-cut diamond can be more dazzling than a larger, poorly-cut one.

Consider your budget and prioritize what diamond characteristics are most important to you, and its intended wearer. 

Balancing Carat Weight with Other Characteristics

It’s crucial to find a balance among the four c’s: carat, cut, clarity, and color.

We’ve already begun to explore the importance of diamond clarity, but let’s recap on the other three c’s:

Cut

The cut of a diamond refers to how well a diamond has been crafted to play with light.

A well-cut, often referred to as an excellent or ideal cut, diamond maximizes sparkle and can make a smaller-carat weight appear more impressive. 

Color

When it comes to diamond color, they range from D to Z. D-grade diamonds are crystal clear and colorless, while Z-grade diamonds have a warm, golden hue.

Clarity

According to diamond aficionados the GIA (Gemological Institute of America), a diamond’s clarity is rated between Flawless and Included.

Flawless diamonds, with their unparalleled perfection, will set you back by a considerable sum. 

Diamonds with Inclusions, however, are often microscopic, and therefore invisible to the naked eye.

Magic Sizes in Diamonds

Understanding "Magic Sizes"

Magic sizes are diamonds which are half-carat, three-quarter carat and carat.

They’re referred to as “magic sizes” due to their popularity among discerning diamond buyers - and for good reason!

Let’s take a 0.75-carat diamond as an example.

Although very similar to its full-carat counterpart, the price point of a slightly lower carat is often significantly cheaper - and the visible difference is minimal. 

Here’s an example of pricing for round cut, GIA Certified, F color, SI2 clarity, excellent cut, no fluorescence, mined natural diamonds.

(Pricing is correct as of August 2024):

0.75 carat - $1700

0.90 carat - $2800

1.00 Carat- $3400

1-carat diamonds are a classic choice for engagement rings, hence their status as a “magic size” diamond.

Pro tip: If you’re looking for a 1-carat beauty, consider 0.90 carat diamonds, too - they will look very similar, but won’t command the premium price tag of a 1-carat. 

The only downside?

Diamonds in the 0.90 carat range aren’t as readily available, so might be tricker to come by. 

1-carat diamonds have long reigned supreme as a symbol of everlasting love and commitment.

However, with the introduction of lab-grown diamonds, the new average diamonds size is 1.75 carats because buyers can get a larger diamond for less. 

Examples of Popular Magic Sizes

0.5 Carats: Ideal for those who want a delicate yet noticeable sparkle.

0.75 Carats: A perfect middle ground, offering a superbly dazzling diamond without the higher price tag of a full carat.

1.0 Carat: The classic choice, symbolizing luxury and significance.

How Carat Affects Diamond Price

Price Dynamics

Carat weight is a significant factor in diamond pricing.

As carat weight increases, so too does the price per carat - often exponentially. 

Simply put: this because larger diamonds are rarer and more desirable.

Let’s take a look at some average price comparisons for a round, brilliant-cut diamond.

For illustration purposes, the lowest price is based on the lowest color and clarity; the highest price is based on the highest color and clarity:

0.5 carat: $350 - $3,000

1 carat: $2,000 - $12,000

2 carat: $3,700 - $40,000

Remember: the price of a diamond is not only determined by its carat, but also cut, clarity and color - the infamous 4 c’s!

For example, a 2-carat diamond with poor clarity, cut and color can be less expensive than a 1-carat diamond of exceptional quality.

Natural vs. Lab-Grown Diamonds

The price difference between natural and lab-grown diamonds for the same carat weight can be substantial. 

Lab-grown diamonds can cost, on average, around 40-50% less compared to natural diamonds of a similar size and quality. 

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Lab-grown diamonds offer a more affordable option while providing the same visual appeal and physical properties as natural diamonds.

The perfect choice for those who want a larger carat weight without the hefty price tag. 

Carat Weight and Certification

Importance of Certification

Diamond certification ensures that the diamond’s carat weight and other characteristics are accurately measured and reported.

Reputable certification bodies, such as the Gemological Institute of America (GIA) and the American Gem Society (AGS), provide detailed reports that guarantee the quality and authenticity of your diamond. 

In short? Having a certification for your diamond gives you full assurance of your diamond’s quality and value.

Importance of Accurate Measurement of Carat Weight

Accurate measurement of carat weight is of utmost importance for determining a diamond's value.

Carat weight significantly influences the cost of a diamond, with even slight differences leading to substantial price variations.

Precise carat measurement ensures that anyone purchasing a diamond receives a fair price.

Accurate carat weight is also essential for certification and appraisal, which are crucial for insurance and resale purposes.

Tips for Buying Diamonds Based on Carat

When purchasing a diamond, it’s important to consider all four c’s: carat, cut, clarity, and color. 

Here are some practical tips to help you purchase the perfect diamond:

Focus on Cut

Prioritize a high-quality cut - a beautiful cut (often referred to as an ideal or excellent cut) enhances a diamond’s brilliance and can make it appear larger.

Balance Characteristics

Find a balance between carat weight and other characteristics to maximize value.

Set a Budget

Determine your budget before you buy and, importantly, stick to it!

Consider Lab-Grown Diamonds

For a larger carat weight within your budget, consider opting for a lab-grown diamond instead of a natural diamond. 

You may also consider reducing the color and/or clarity depending on how large you want your diamond to be, while also staying in your budget. 

Check Certification

Ensure the diamond is certified by a reputable body to confirm its quality and authenticity.

The Carat Conclusion

When choosing your perfect diamond, understanding carat weight is a vital part of the process, as it influences the price, appearance, and overall value of a diamond.

By balancing carat weight with the cut, clarity, and color, you can find the perfect diamond that meets your personal preferences and budget.

Ready to make an informed diamond purchase?

Explore our collection and discover the ideal diamond that reflects your unique style and commitment.

Your perfect diamond is but a click away!

Peter Manka Jr

Peter Manka Jr. - Owner at Ben Garelick

Peter Manka Jr. is a passionate member of the family business who joined Ben Garelick in the early 2000s after working in product licensing for Sesame Workshop & The Jim Henson Company for many years. He obtained a degree in diamonds and jewelry from the prestigious Gemological Institute of America (GIA) in order to sharpen his jewelry skills. He takes great pride in providing exceptional customer service and helping clients find the perfect piece of jewelry.

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