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Fascinating Diamonds

4 Carat Engagement Rings

Shop our collection of 4 carat lab-grown diamond rings, crafted for brilliance and impact. Choose from certified round, oval, emerald, and cushion cut diamonds that showcase timeless elegance. 

Explore Our 4 Carat Diamond Ring Collection


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Flower Round Halo Diamond Ring

$3,768.55
Channel Bar Diamond Wedding Ring Set
Fascinating Diamond
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Channel Bar Diamond Wedding Ring Set

$5,827.05
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Filigree Single Stone Wedding Set

$4,544.80
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Filigree Single Stone Ring

$3,253.35
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Cushion Cut Halo Eternity Engagement Ring

$3,509.80
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Asscher Cut French Pave Diamond Wedding Ring Set

$4,027.30
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Round Cut Curved Vine Engagement Ring

$3,661.60
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- 33%

Petite Oval Bezel Simple Engagement Ring

$1,526.05
$3,128.00
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Asscher Cut French Pave Diamond Engagement Ring

$3,182.05
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3 Row Emerald Cut Big Engagement Ring

$3,752.45
Christmas  Sale
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- 25%

7 Stone Classic Engagement Ring

$1,877.95
$3,657.00
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- 27%

Delicate Flower Round Engagement Ring

$1,898.65
$3,468.40
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Pave Underhalo engagement ring

$3,447.70
Twisted Pear Halo Bridal Ring Set
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Twisted Pear Halo Bridal Ring Set
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Twisted Pear Halo Bridal Ring Set

$5,004.80
Art Deco Vintage Diamond Ring
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Art Deco Vintage Diamond Ring

$3,147.55
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Cross Band Engagement Ring

$1,403.00
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Cathedral Flat Band Solitaire Engagement Ring

$3,087.75
Filigree Wide Band Engagement Ring
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Filigree Wide Band Engagement Ring
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Filigree Wide Band Engagement Ring

$3,147.55
Delicate Antique Pave Engagement Ring
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Delicate Antique Pave Engagement Ring

$3,921.50
Beautiful Filigree 6 Prong Diamond Ring
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Beautiful Filigree 6 Prong Diamond Ring

$3,977.85
Christmas  Sale
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East West Oval Wedding Band Ring Set

$3,772.00
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Swirl Oval Solitaire Engagement Ring

$3,021.05
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Swirl Oval East West Solitaire Diamond Ring

$3,021.05
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Solitaire Ring With Eternity Band

$4,045.70

4 Carat Diamond Rings – Impressive Size, Certified Value

A 4 carat diamond ring is chosen by couples who want a larger, more noticeable diamond without entering the extremely high price range of 5 carat and above. It offers significant presence and brilliance while maintaining wearability and design flexibility. Compared to 2 or 3 carat rings, a 4 carat diamond stands out more clearly and delivers a stronger visual impact, making it ideal for milestone occasions.
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4 Carat vs 2 or 3 Carat Diamond Rings

The size difference between a 4 carat and smaller diamonds is easily visible. A 4 carat natural diamond ring of good quality usually ranges from $60,000 to $120,000, depending on cut, color, and clarity. In comparison, a 3 carat natural diamond may cost $30,000 to $60,000, and a 2 carat diamond ranges around $15,000 to $25,000. The 4 carat option provides more brilliance and surface area, giving a bold and refined appearance while maintaining durability.

Lab Grown vs Natural 4 Carat Diamonds

A 4 carat lab-grown diamond ring offers the same chemical structure, sparkle, and certification as a mined diamond but at a much lower price — typically between $5,000 and $10,000, depending on specifications. The value difference comes from production efficiency and availability, not quality. Both lab and natural options are real diamonds, certified for authenticity and cut precision.

Best Shapes for 4 Carat Rings

  • Oval cut – Enhances length and makes the diamond appear larger.
  • Emerald cut – Shows clarity and symmetry with a structured look.
  • Round cut – Maximizes light performance for strong brilliance.

A 4 carat diamond engagement ring, available in both natural and lab-grown diamonds, represents high quality, certified assurance, and clear pricing — ideal for couples seeking impact with lasting value.

FAQs For 4 Carat Engagement Rings

How big does a 4 carat diamond ring look?

A 4 carat diamond ring has a noticeable presence. It’s roughly 10.2mm in diameter for a round cut, making it almost twice the surface area of a 2 carat diamond. The size difference is visible and creates a strong statement look.

What is the price of a 4 carat diamond ring?

The price of a 4 carat diamond ring depends on whether it’s natural or lab-grown. A natural 4 carat diamond can range from $70,000 to $150,000, while a 4 carat lab-grown diamond of similar quality ranges from $5,000 to $12,000, offering better value and ethical sourcing.

Is a 4 carat diamond too big for an engagement ring?

A 4 carat diamond engagement ring is ideal for buyers looking for a bold, standout ring. It’s larger than most engagement ring sizes but still wearable daily when set securely in oval, emerald, or round shapes.

Which shape is best for a 4 carat diamond?

The most popular shapes are oval, emerald, and round. Oval cuts look slightly larger, emerald cuts highlight clarity and clean lines, while round cuts offer the most brilliance and sparkle.

What is the difference between a 4 carat lab-grown and a natural diamond?

Both are real diamonds with the same chemical and optical properties. The difference is in origin and price. Lab-grown 4 carat diamonds are created in controlled environments, ensuring ethical production and transparent pricing, while natural 4 carat diamonds are rare and more expensive due to limited availability.

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Terms & Conditions

Fascinating Diamonds supplies products listed on the Fascinating Diamonds, and Fascinating Diamonds websites, and in our stores under the following Terms and Conditions. Please read these Terms and Conditions, and our Privacy and Cookie Policies carefully before using any of our websites, or ordering from us.

The Terms and Conditions apply to your use of any Fascinating Diamonds website and to any products you purchase from them; regardless of how you access the website, including any technologies or devices where our website is available to you at home, on the move or in store

We reserve the right to update these Terms and Conditions at any time, and any updates affecting you or your purchases will be notified to you, by us in writing (via email), and on this page.

The headings in these Conditions are for convenience only and shall not affect their interpretation.

We recommend that you print and keep a copy of these Terms and Conditions for your future reference...