• Christmas Big Sale 25% Off | Site-Wide | Use Coupon Code "CHRISTMAS25" at Checkout
  • 16 Dec Last day to order for Christmas delivery
  • Proudly Made in USA   usa flag
  • Buy Now, Pay Later
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


marquise-cut-wave-solitaire-wedding-band-set-in-yellow-gold-fdens11566mq-nl-yg-w2.jpg
Fascinating Diamond
marquise-cut-wave-solitaire-wedding-band-set-in-yellow-gold-fdens11566mq-nl-yg-w2.jpg
Fascinating Diamond

Wave Solitaire Wedding Band Set

$3,915.75
graduated-round-cut-diamond-engagement-ring-in-FDENR9450ROR-NL-RG
Fascinating Diamond
graduated-lucida-simple-engagement-ring-rose-gold-fdenr9450-model
Fascinating Diamond

Graduated Lucida Simple Engagement Ring

$3,761.65
Emerald-Cut-Bar-Baguette-3-Stone-Lab-Diamond-Engagement-Ring-In-FDENS100RANGLE-YG
Fascinating Diamond
Emerald-Cut-Bar-Baguette-3-Stone-Lab-Diamond-Engagement-Ring-In-FDENS100RANGLE-YG
Fascinating Diamond

3 Stone Baguette Bar Wedding Set

$5,260.10
3-carat-round-cut-lab-diamond-trio-stone-ring-in-fdens100-ror-3-00-ct-fancy1-nl-wg
Fascinating Diamond
3-carat-round-cut-lab-diamond-trio-stone-ring-in-fdens100-ror-3-00-ct-fancy1-nl-wg
Fascinating Diamond

Tapered Baguette Engagement Ring

$3,393.65
round-cut-diamond-engagement-ring-in-FD1109RORANGLE3-NL-WG
Fascinating Diamond
square-filigree-split-engagement-ring-yellow-gold-fdenr1109-model
Fascinating Diamond

Square Filigree Split Engagement Ring

$5,184.20
emerald-cut-engagement-ring-with-diamond-band-in-white-gold-FD8300EMB3-NL-WG.jpg
Fascinating Diamond
emerald-cut-engagement-ring-with-diamond-band-in-white-gold-FD8300EMB3-NL-WG.jpg
Fascinating Diamond

Marquise Accent Vine Leaf Bridal Set

$4,602.30
round-cut-simple-diamond-twisted-vine-bridal-ring-sets-in-14K-yellow-gold-FD8233RO-NL-YG
Fascinating Diamond
simple-diamond-twisted-vine-bridal-set-yellow-gold-fdens8253-ws1-model
Fascinating Diamond

Simple Diamond Twisted Vine Bridal Set

$2,625.45
french-pave-round-petite-diamond-wedding-ring-set-in-FD9918ROANGLE3-NL-WG-B1
Fascinating Diamond
french-pave-round-petite-diamond-wedding-ring-set-in-FD9918ROANGLE3-NL-WG-B1
Fascinating Diamond

French Pave Petite Wedding Ring Set

$3,900.80
asscher-cut-twisted-diamond-ring-with-matching-curved-band-in-14K-rose-gold-FD8300AS-NL-RG.jpg
Fascinating Diamond
asscher-cut-twisted-diamond-ring-with-matching-curved-band-in-14K-rose-gold-FD8300AS-NL-RG.jpg
Fascinating Diamond

Twist Vine Marquise Accents Ring With Plain Band

$4,534.45
twisted-vine-delicate-engagement-ring-white-gold-fd8253-fancy-1-wg.jpg
Fascinating Diamond
twisted-vine-delicate-engagement-ring-white-gold-fd8253-fancy-1-wg.jpg
Fascinating Diamond

Twisted Vine Delicate Engagement Ring

$1,442.10
Christmas  Sale
french-pave-asscher-petite-diamond-engagement-ring-in-FD9918ASRANGLE3-NL-YG
Fascinating Diamond
french-pave-asscher-petite-diamond-engagement-ring-in-FD9918ASRANGLE3-NL-YG
Fascinating Diamond

French Pave Petite Cathedral Engagement Ring

$3,234.95
delicate-three-stone-radiant-cut-diamond-ring-in-yellow-gold-FD9299RAR-NL-YG
Fascinating Diamond
delicate-three-stone-radiant-cut-diamond-ring-in-yellow-gold-FD9299RARANGLE5-NL-YG
Fascinating Diamond

Radiant Cut Delicate Three Stone Ring

$971.75
$3,055.55
round-cut-Infinity-twist-diamond-matching-bridal-set-in-14K-yellow-gold-FD8253RO-NL-YG
Fascinating Diamond
infinity-twist-matching-wedding-set-yellow-gold-fdens8253-model_f3733192-2e4f-43be-b929-4eb88a1ad858
Fascinating Diamond

Infinity Twist Matching Wedding Set

$3,832.95
cushion-cut-twisted-petal-diamond-engagement-ring-in-14K-rose-gold-FD8300CUR-NL-RG.jpg
Fascinating Diamond
cushion-cut-twisted-petal-diamond-engagement-ring-in-14K-yellow-gold-FD8300CUR-NL-YG.jpg
Fascinating Diamond

Twisted Split Marquise Accents Engagement Ring

$3,872.05
round-cut-infinity-twist-diamond-engagement-ring-in-white-gold-FD8253RORHAND-NL-WG

Twisted Infinity Vine Engagement Ring

$1,626.10
luxury-oval-lab-diamond-floral-cluster-halo-ring-in-white-gold-FD9704OVR-ex-fancy-2-wg
Fascinating Diamond
oval-sunflower-halo-engagement-ring-rose-gold-fdenr9704ovr-model
Fascinating Diamond

Oval Sunflower Halo Engagement Ring

$2,776.10
halo-filigree-twisted-diamond-engagement-ring-in-FD124061RORANGLE3-NL-WG
Fascinating Diamond
halo-filigree-twisted-engagement-ring-white-gold-fdenr10577-model
Fascinating Diamond

Halo Filigree Twisted Engagement Ring

$3,579.95
cathedral-hidden-halo-emerald-cut-diamond-ring-in-rose-gold-FD9788EMR-NL-RG
Fascinating Diamond
cathedral-hidden-halo-diamond-ring-rose-gold-fd9788r-model
Fascinating Diamond

Cathedral Hidden Halo Diamond Ring

$3,348.80
round-cut-3-stone-trellis-diamond-engagement-ring-in-white-gold-FD-10768ROR-1.50CT-NL-WG
Fascinating Diamond
1ct.labdiamondtrellis3stoneengagementringin14kwhitegold-FD10768ROR-1.00CT
Fascinating Diamond

Round 3 Stone Trellis Engagement Ring

$3,423.55
Multi Gold 3 Stone Baguette Ring
Fascinating Diamond
Multi Gold 3 Stone Baguette Ring
Fascinating Diamond

Multi Gold 3 Stone Baguette Ring

$4,027.30
Christmas  Sale
Classic Pear Three Stone Ring
Fascinating Diamond
classic-pear-three-stone-ring-rose-gold-fdenr9472-model
Fascinating Diamond

Classic Pear Three Stone Ring

$3,356.85
oval-diamond-3-stone-basket-engagement-ring-in-white-gold-FD10416OVR-NL-WG
Fascinating Diamond
oval-3-stone-basket-ring-white-gold-fdenr10416-model
Fascinating Diamond

Oval 3 Stone Basket Ring

$3,776.60
graduated-asshcer-cut-diamond-engagement-ring-in-FD10032ASRANGLE3-NL-WG
Fascinating Diamond
graduated-asshcer-cut-diamond-engagement-ring-in-FD10032ASRANGLE3-NL-WG
Fascinating Diamond

Graduated Asscher Cut Modern Engagement Ring

$3,760.50
Beautiful Bezel Three Stone Engagement Ring
Fascinating Diamond
Beautiful Bezel Three Stone Engagement Ring
Fascinating Diamond

Beautiful Bezel Three Stone Engagement Ring

$3,464.95

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.
Read More

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.

Show More

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...