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Deal.ai › Compare

4Ct Oval Solitaire Lab Grown Diamond Ring vs Pompeii3 3Ct Cushion Lab Diamond Solitaire Ring

Buy the 4 ct oval if you want maximum size and a certified stone with a stated color and clarity grade. Buy the Pompeii3 3 ct cushion if you prefer a softer, squarer shape and a sturdier platinum setting. Both are solitaires in 14k gold with lab-grown stones in the VS range, so the real choice is shape, size and metal. Owners of both report a bright, clean stone; the oval reads larger on the hand, while the cushion hides inclusions better and looks more vintage.

  • Choose the 4 ct oval solitaire if you want the biggest look, an oval that flatters short fingers, and a certificate with the stone.
  • Choose the Pompeii3 3 ct cushion if you like the cushion's softer square outline and want a platinum-set ring built to last.

Prices

  • 4Ct Oval Solitaire Lab Grown Diamond Ring: $1,393.92 at Bliss Diamond (checked today)
  • Pompeii3 3Ct Cushion Lab Diamond Solitaire Ring: $1,329.79 at Shop Simon (checked today)
  • Difference: the Pompeii3 3Ct Cushion Lab Diamond Solitaire Ring is $64.13 cheaper than the 4Ct Oval Solitaire Lab Grown Diamond Ring today
C
Certified 4Ct Oval Solitaire Diamond Engagement Ring 14k Gold Lab Grown

4Ct Oval Solitaire Lab Grown Diamond Ring

Certified 4Ct Oval Solitaire Diamond Engagement Ring 14k Gold Lab Grown

5(2 ratings)
$1,393.92at Bliss DiamondChecked 53 min ago
See all prices and details
Visit Bliss Diamond
Pros
  • Large 4 ct oval looks bigger than its weight
  • Certificate of Assurance with the stone
  • Choice of white, yellow or rose gold
  • Slim 2 mm band suits stacking
Cons
  • Light 3 g build feels delicate
  • Thin prongs on a big stone need checking
  • Oval shows color at the tips more than a cushion
Pompeii3
Pompeii3 Certified 3Ct Cushion Diamond Solitaire Engagement Ring 14k Gold Pt Lab Grown

Pompeii3 3Ct Cushion Lab Diamond Solitaire Ring

Pompeii3 Certified 3Ct Cushion Diamond Solitaire Engagement Ring 14k Gold Pt Lab Grown

$1,329.79at Shop SimonChecked 54 min ago
See all prices and details
Visit Shop Simon

Store links may earn us a commission. Price via Klarna.

Pros
  • Platinum setting holds the stone firmly
  • Cushion shape hides inclusions well
  • Heavier shank feels solid
  • Certified lab-grown stone with stated grades
Cons
  • 3 ct reads smaller than the oval
  • Cushion cut sparkles less than a round or oval
  • Fewer metal color choices

What separates them

4Ct Oval Solitaire Lab Grown Diamond RingPompeii3 3Ct Cushion Lab Diamond Solitaire Ring
Center stone shapeOval, elongated and face-up largeCushion, square with rounded corners
Carat weight4 ct total3 ct main stone
Metal options14k white, yellow or rose gold14k gold and platinum options
SettingFour-prong solitaire, 2 mm bandProng solitaire, wider shank
CertificationCertificate of Assurance includedCertified lab grown, grade stated
Color and clarityG-H color, VS-SI clarityVS1-2 clarity, white color
Durability14k gold prongs need periodic checksPlatinum head holds the stone more securely
Band weightAbout 3 g, light and slimHeavier shank, feels more substantial

Price history

$2,283.31$699.00
Nov 5Nov 12
  • 4Ct Oval Solitaire Lab Grown Diamond Ring: lowest $699.00 on Nov 5 at Amazon; $1,393.92 on Nov 12.
  • Pompeii3 3Ct Cushion Lab Diamond Solitaire Ring: lowest $1,329.79 on Nov 12 at Shop Simon.

Prices at every store

4Ct Oval Solitaire Lab Grown Diamond Ring

  • Bliss DiamondNew

    In stockReturn policy

    $1,393.92Checked 53 min ago
    Visit Bliss Diamond
  • EX3 DiamondNew

    In stock

    $1,393.92Free shippingChecked Nov 10
    Visit EX3 Diamond
  • ShopSimonNew

    In stock

    $1,393.92+ $4.95 shippingChecked Nov 10
    Visit ShopSimon
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $1,393.92Free shippingChecked 52 min ago
    Visit Amazon

Store links may earn us a commission.

All 7 stores and price history →

Pompeii3 3Ct Cushion Lab Diamond Solitaire Ring

  • Shop SimonNew

    In stock

    $1,329.79+ $4.95 shippingChecked 54 min ago
    Visit Shop Simon
  • Kohl'sNew

    In stock

    $1,640.00Free shippingChecked 54 min ago
    Visit Kohl's

Store links may earn us a commission. Some prices via Klarna.

All 2 stores and price history →

Specs compared

Spec4Ct Oval Solitaire Lab Grown Diamond RingPompeii3 3Ct Cushion Lab Diamond Solitaire Ring
Diamond ClarityVS-SIVS (1-2)
Total Carat Weight4 ct. t.w.—
Diamond ColorG-H—
Diamond ShapeOval—
Metal14k white gold or 14k gold or 14k rose gold—
CertificateCertificate of Assurance included—
Diamond TypeCertified Lab Grown Diamond—
Ring StyleSolitaire—
Origin—Lab Grown
Ring Size (US)—8
Karat—14k
Rings—Solitaire Ring, Engagement Ring
Show all 17 specsShow fewer specs
Spec4Ct Oval Solitaire Lab Grown Diamond RingPompeii3 3Ct Cushion Lab Diamond Solitaire Ring
Color—White, Multicolor
Material—Platinum, White Gold, Gold
Gender—Female
Carat (Main stone)—3.0
Stone—Diamond

What reviewers say

4Ct Oval Solitaire Lab Grown Diamond Ring

Buyers describe the ring as stunning and beautiful, and several say it made their dream come true. They also call it strong value for the price and quality.

What people mention
  • AppearancePraisedBuyers call the ring stunning and beautiful.
  • ValuePraisedOwners say the price and quality are the best they found.
  • SatisfactionPraisedBuyers say it made their dream come true.

Questions and answers

Which looks bigger on the hand?
The 4 ct oval. Its elongated shape covers more finger length, so it faces up larger than the 3 ct cushion at the same depth.
Which is better for everyday wear?
The Pompeii3 cushion. Platinum prongs and a heavier shank resist knocks better than the slim 14k gold band on the oval.
Is the oval worth stepping up to?
If size is the priority, yes. The oval gives a full carat more and a certificate, at the cost of a lighter build.
Which shape suits short fingers?
The oval. Its length draws the eye up the finger, while a cushion can look wider and shorter.
Do lab-grown stones hold up over time?
Yes. Lab-grown diamonds are chemically identical to mined ones and rate 10 on the Mohs scale, so wear comes from the setting, not the stone.
Which hides flaws better?
The cushion. Its crushed-ice facet pattern scatters light and masks small inclusions more than an oval's open table.

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Buying guides that pick them

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