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What is the popular size for diamond stud earrings?

May. 13, 2024

What is an Ideal Size for Diamond Stud Earrings?

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Shopping for a pair of diamond stud earrings is exciting. Diamond studs are gorgeous and timeless, and owning a pair can help you elevate any look. So, picking out your perfect pair of diamond studs can be thrilling, as you take in all your style options and imagine the ways you’ll wear your new studs. However, as a jeweler that specializes in diamond studs, we know that there’s one element of the diamond stud shopping process that can sometimes be more confusing than exciting: choosing your diamond size. 

It can be tricky to pick out an ideally sized pair of diamond stud earrings, especially if they’ll be your first pair. It can be hard to decide which size will be perfect for the looks you want to create. Then, it can also be difficult to even discern what size a diamond truly is, since you’ll be looking at carat weight and not a size measurement when shopping for your diamond studs. 

Though we know that deciding on your perfect diamond size can sometimes be challenging, we’re here to help! Below, we’re going over everything you need to know about finding the ideal size for your diamond stud earrings. We’ll provide tips on understanding how carat weight relates to size, give some recommendations on diamond sizes for different occasions, share the most popular size for diamond earrings, and go over how diamond quality can affect diamond size. 

Understanding Carat Total Weight 

Everyone who shops for a pair of diamond studs should understand that diamond studs will be listed with their total carat weight (ctw), which is the weight of all the diamonds within the studs. So, if you’re looking at a pair of 1 ctw solitaire diamond studs, each of the two diamonds within the pair of diamond studs will weigh 0.50 ctw. It’s important to understand carat total weight when you’re shopping for a pair of diamond studs so that you end up with diamonds that are the right size for you– and not half the size you thought they’d be. 

Diamond Carat Weight and Diamond Size 

You can use a diamond’s carat weight to get a good idea of its size. Above, you can see what some round diamond studs with different ctw look like when worn on the earlobe. 

Note that when you browse the diamond stud earrings in our online store, you can see what each pair will look like when worn on the ear by clicking through the pair’s featured images. 

Learn more about how carat weight relates to diamond size by browsing our Diamond Earring Size Guide. 

Consider Where You Want to Wear Your Studs 

When you pick out your diamond stud size, you’ll want to think about where you’ll be wearing your studs. If you’re shopping for an everyday pair of diamond earrings, you may want to stick to somewhat smaller diamond studs. A good rule of thumb is to stay between 0.25 ctw and 1 ctw for an everyday pair of studs. Then, if you’re shopping for a pair of diamond studs that you’ll wear on special occasions, you may want to go a bit bigger and opt for diamonds that are over 1 ctw. 

These are just general guidelines, of course, and you can always go outside these guidelines if that better suits your style. For example, if you love to look glamorous everyday, you may want to select larger diamonds for your everyday studs. Or, if you love more delicate and understated accessories with your special occasion looks, you may want to select smaller diamonds for your special occasion studs. 

What’s the Most Popular Size for Diamond Stud Earrings? 

There’s no one size of diamond stud earring that will be perfect for everyone. Each person has their own unique aesthetic desires, so a size that’s perfect for one person could be too big or small for another person. 

With that said, there is one size of diamond stud earring that tends to be a bit more popular than the rest: 1 ctw. One carat total weight diamond stud earrings will feature two 0.50 carat diamonds. In a pair of round cut diamond studs, each 0.50 carat diamond would measure around 5 mm in diameter. This size of diamond stud is popular because it’s quite versatile. It’s right at the edge of our recommendations for both everyday and special occasion diamond studs, and many people find that this size works beautifully with both casual and upscale attire.

Don’t Forget Quality– It Impacts Visual Presence

Carat weight, one of the 4Cs of diamonds, can give you an excellent idea of how large a diamond is. The more a diamond weighs, the larger it will be. However, carat weight isn’t the only one of the 4Cs that affects how large your diamond studs will look. Diamond cut, diamond color, and diamond clarity can all affect how large a diamond appears to the eye, since a whiter, more brilliant diamond will have a bigger visual presence. 

Diamond cut grade, in particular, has an enormous impact on how large your diamond looks. Humans perceive things that are more reflective or shiny as being larger. When a diamond is very well cut, it will be highly brilliant and look larger. But if a diamond is poorly cut, it will be quite dull and dim, which will make it look smaller than it actually is. For this reason, we recommend only selecting diamonds that have either an Excellent or a Very Good cut grade for diamond stud earrings, a diamond engagement ring, or a diamond pendant necklace. Once you get into the Good cut grade and below, diamonds can start looking considerably less brilliant, which tends to make diamond jewelry look small and lackluster. 

Final Thoughts on the Best Size for Diamond Stud Earrings 

We hope this guide to diamond stud earring size has been helpful as you hunt for your perfect pair of diamond studs. If you have any questions about diamond stud earrings or if you need assistance picking out a pair, please feel free to reach out. Diamond studs are our speciality and we love helping people find their perfect match. 

Read Next: Looking for even more info on buying diamond stud earrings? Check out our guide to finding The Best Setting for Your Diamond Studs, which will teach you how to choose your setting style, your precious metal, and your earring backs to complete your perfect pair of studs. This comprehensive look at stud earring settings covers everything you need to know about prong settings, bezel settings, halo settings, yellow gold, white gold, rose gold, platinum, push backs, screw backs, lock backs, and more!

What Size Diamond Stud Earring is Ideal for Everyday ...


Selecting the right size diamond stud earrings for everyday wear is a tricky task. Smaller stones are a more subtle, understated choice, bigger ones on the other hand, while more noticeable may be overpowering and too flashy. To pick the ideal size to match your personal style, it is important to understand carat weight. Carat weight is used to measure the size of a diamond and is directly correlated with its price. In other words, larger diamonds are more expensive than smaller ones.

Understanding Carat Weight

Carat weight (or ct or ctw) is the standard unit used to measure gemstones and diamonds. It is however not commonly used in everyday life and therefore not always understood intuitively. To give you an idea, for diamond shapes that are geometrically equidistant, such as round and square diamonds, one carat equals approximately 5.5 - 6.5mm (diameter). The most common carat weights for diamond stud earrings range from 0.25ct (small) to up to 1.5ct (large). 

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Generally speaking, a 0.25ct diamond is considered very small or petite, a 0.50ct stone is considered medium-sized; and 1ct stones are considered sizable. Everything above 1ct is quite large and showy.

The image below shows our Fiona Six Prong Round Studs in different carat sizes.

When considering the carat size, it is important to pay attention to whether you are looking at the “total carat weight”, so the combined carat weight of both earrings, or the the carat weight per earring. At CARAT* LONDON we will indicate this very clearly on our product detail pages (i.e. “The model wears 1.50ct. equivalent stone.”) and in addition to that there will be plenty of photos showing you exactly how big a stone is.

Which Carat Weight is Most Popular for Diamond Earrings?

While it is an individual choice to pick the perfect carat weight, overall 1ct weight is the most popular weight option for diamond earrings in the UK. Research from Google underpins that: on average, in 2022 the number of Brits searching for “1ct diamond earrings” on Google UK exceeded those searching for a “2ct diamond earring” by a factor of 3x. Interestingly: during the festive season in December the interest in larger carat sizes increases even more and the number of search queries for “1ct diamond earrings” is twice as high as during an average month.

This shows, more understated stone sizes, such as a 0.50ct stone is everyday wear, whereas larger stones are a better fit for the festive season, or for more formal occasions such as weddings or parties. Larger stones are often seen as statement pieces and can add an impressive sparkle to any special event or night out.

How Does Carat Weight Affect Diamond Earring Cost?

As mentioned above, carat weight is used to measure the size of a diamond and is therefore directly proportional to its price. When determining which size of stud earring is right for you, it is important to consider your budget as well as your desired look. At CARAT LONDON*, all our diamond stud earrings are made with lab grown diamonds. Lab created diamonds are physically, chemically, and optically identical to mined diamonds.They however have a much shorter supply chain and do not need to be mined. As a result, at a similar grade, they are up to 50 percent less expensive than mined counterparts - while being more sustainable and 100% conflict-free. Browse our lab made diamond earrings and find the best pair for yourself!


Recap: Select the Carat Size that is Right For You

In conclusion, carat weight is an important factor to consider when selecting the perfect pair of diamond stud earrings. Depending on your budget and desired look, different sizes of diamonds may be more suitable for everyday wear and special events. It is essential to research cut, clarity and colour ratings prior to making a purchase. You may also want to wear a combination of different earrings. Read our earring stacking guide to find how to best stack multiple earrings.



What is a carat weight in diamond earrings?
Carat weight refers to the weight of the diamond or gemstone in your stud earrings and is a key factor in determining size and price.

How does carat weight relate to the size of a diamond stud?
Typically, a one-carat diamond will have a diameter of about 6.5mm. Carat weight directly correlates with the physical size of the diamond.

How does carat weight affect the price of diamond stud earrings?
The larger the carat weight, the higher the price. This is because larger diamonds or gemstones are rarer / more costly and in thus in higher demand.

How do I choose the right carat weight for my diamond studs?
While larger studs can be worn daily, they are often more suitable for special occasions due to their size and impact.

What are the most common carat weights for everyday diamond studs?
Diamond studs for everyday wear are commonly found in sizes ranging from 0.25ct to 1ct per earring.

Are larger carat diamond studs suitable for everyday wear?
For formal attire, choose ornate or statement drop earrings. For casual outfits, smaller, simpler drop earrings are ideal.

What is the best carat weight for diamond earrings for the office?
For a professional setting, modest-sized diamond studs between 0.25ct to 0.50ct are ideal as they are noticeable yet understated.

Are there affordable options for large carat diamond studs?
Yes, consider lab-grown diamonds or stones for larger carat sizes at a more accessible price point. All our Gentle Diamonds stud earrings are made from lab-grown diamonds.

How do I maintain my diamond stud earrings?
Regular cleaning with a soft brush and mild soap, and annual check-ups with a jeweler can keep your diamond studs sparkling.

What should I consider apart from carat weight when choosing diamond studs?
Look at the cut, color, and clarity of the diamonds. These factors also heavily influence the appearance and brilliance of the earrings. 

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