Round Brilliant Cut Diamond Ring: A Classic That Captivates

17 June 2025 • 5 min read

There’s something truly magical about the way a round brilliant cut diamond ring catches the light. It’s timeless. It’s elegant. And it’s hands down the most popular diamond shape in the world—for good reason.

If you’re in the market for an engagement ring or a once-in-a-lifetime jewellery piece, here’s why the round brilliant cut is still the queen of diamonds.

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What Is a Round Brilliant Cut Diamond?

Let’s start with the basics. The round brilliant cut is designed with 58 precise facets that maximise light return. Translation? This stone sparkles like no other. It’s engineered for brilliance—literally.

From candlelit dinners to sunny strolls, a round brilliant diamond will always dazzle.

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Why the Round Brilliant Cut Rules Them All

1. Unmatched Sparkle

The way it reflects light is next level. No other diamond shape compares when it comes to fire, brilliance, and scintillation. It’s like having your own portable disco ball—but classy.

2. Versatile and Timeless

Whether you’re a minimalist or a vintage romantic, this shape suits every setting, style and era. It never looks dated—because it never goes out of fashion.

3. Most Sought-After Shape

Round brilliants are the most in-demand diamond cut, making them a solid investment. They also tend to hold their value better than trendier shapes.

4. Works with Every Setting

Solitaire? Check. Halo? Check. Pavé band? Absolutely. This cut is the chameleon of diamonds—it looks amazing everywhere.

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Popular Settings for Round Brilliant Rings

You’ve chosen the perfect diamond—now it’s time to make it shine even brighter. Here are the most popular settings that enhance a round brilliant:

Solitaire Setting

Clean, simple, and oh-so-chic. This setting lets the diamond take centre stage. Perfect for the understated bride.

Halo Setting

Surround your centre stone with a ring of smaller diamonds to up the sparkle factor. Bonus: makes your stone look bigger!

Pavé Band

Tiny diamonds set into the band add elegance and texture. It’s subtle luxury with a twist.

Three-Stone Setting

The centre round brilliant is flanked by two smaller stones. Symbolic of past, present, and future—this one’s full of meaning.

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What to Know Before You Buy

Even though round brilliants are consistently breathtaking, there are a few things to consider:

Cut Is King

Of all the 4Cs, cut matters most for round brilliants. A well-cut stone will maximise sparkle, even if carat or colour isn’t top-tier.

Mind the Carat

Because round diamonds have a larger surface area than other shapes, you might be able to go slightly lower in carat and still get a wow effect.

Setting Height

Round diamonds can sit high or low depending on the setting. If you’re hands-on in daily life, consider a lower-set design for comfort.

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Round Brilliant vs. Other Shapes

Wondering how the round brilliant stacks up against others?

Short version: If sparkle’s your top priority, round brilliant is your go-to.

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Customise Your Round Brilliant Ring with Ernesto Buono

At Ernesto Buono Fine Jewellery, we specialise in helping couples create unforgettable moments with rings that shine from every angle. From hand-selecting the perfect round brilliant diamond to crafting a one-of-a-kind setting, our team of expert jewellers are here to guide you every step of the way.

💎 Visit us in-store in Sydney, browse online at www.ernestobuono.com.au, or explore our collection on Instagram @ernestobuonofinejewellery.

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Why Round Brilliant Cut Is the Ideal Engagement Ring Choice

If you’re aiming for a ring that’s going to stay stunning for decades—not just this season—then a round brilliant cut diamond ring is the gold standard.

Perfect for:

• Classic romantics

• Lovers of sparkle

• Minimalists who want impact without fuss

• Anyone who wants a ring that’s beautiful from every angle

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Caring for Your Round Brilliant Diamond

These beauties are durable—but even diamonds need TLC.

• Clean regularly with warm water and mild soap

• Avoid harsh chemicals and rough impact

• Have it checked annually to make sure the setting is secure

• Store safely when you’re not wearing it

A little care goes a long way in keeping your ring radiant for life.

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Final Thoughts: A Cut That Never Goes Out of Style

When in doubt, go round. A round brilliant cut diamond ring is a forever classic. It sparkles harder, looks incredible in any setting, and feels just as magical in 30 years as it did on day one. Whether you’re planning the perfect proposal or treating yourself to a luxurious piece, this cut is the diamond world’s crown jewel.

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FAQs About Round Brilliant Cut Diamond Rings

1. Is a round brilliant cut diamond more expensive?
Yes, slightly—due to higher demand and more diamond loss during cutting. But the unmatched sparkle makes it worth it.

2. What’s the best setting for a round brilliant diamond?
It depends on your style! Solitaires are timeless, halos add extra sparkle, and pavé bands offer subtle glamour.

3. How do I choose the best cut grade?
Always aim for an Excellent or Very Good cut to maximise sparkle.

4. Can I get a lab-grown round brilliant diamond?
Absolutely. Lab-grown diamonds are chemically identical and offer great value for money.

5. What size round diamond looks best?
There’s no “best” size—it depends on your hand, style, and budget. Even a 0.5-carat round can look stunning with the right setting.