Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG780662034

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG780662034

Diamond specifications and retailer prices

From $5,734 CAD

$4,105 USD

As of October 29, 2026

Save $29,174 CAD (84%) vs most expensive(unlock to see where)

11 retailers carry this diamond

Most expensive: $34,909 CAD at Do Amore Diamonds · As of October 30, 2026

View at Do Amore Diamonds

About this 4.28ct lab-grown cushion diamond

This 4.28ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780662034 or 780662034. Listed at 11 retailers as of October 29, 2026, with prices from $5,734 to $34,909, a $29,174 spread on the same certified stone. Do Amore Diamonds lists it at $34,909. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.28

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.4°

Pavilion angle38.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG780662034

Dimensions9.70 × 9.39 × 6.28 mm

L/W Ratio1.03

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG780662034

Side View

Caratlytics Score

How it works →

A+

Exceptional

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29

Current: $34,909 CAD|Low: $5,734 CAD|High: $46,223 CAD|Avg: $15,900 CAD|-24.5%

Do Amore Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

October 30, 2026

Retailer 10$5,734 CAD

Retailer 6$5,881 CAD

Retailer 4$6,642 CAD

Retailer 11$7,982 CAD

Retailer 9$9,492 CAD

Retailer 5$11,199 CAD

Retailer 3$11,944 CAD

Retailer 7$13,990 CAD

Retailer 8$16,147 CAD

Retailer 2$18,523 CAD

Do Amore Diamonds$34,909 CAD

28 data points across 11 retailers

11 retailers$5,734 CAD to $34,909 CAD

A+

Cheapest Retailer

$5,734 CAD

$4,105 USD

Retailer 2

$5,881 CAD

$4,210 USD

View

Retailer 3

$6,642 CAD

$4,755 USD

View

Retailer 4

$7,982 CAD

$5,714 USD

View

Final sale: no returns

Retailer 5

$9,492 CAD

$6,795 USD

View

Retailer 6

$11,199 CAD

€7,635 EUR

View

Retailer 7

$11,944 CAD

$8,550 USD

View

Price last confirmed 82 days ago

B+

Retailer 8

$13,990 CAD

£7,886 GBP

View

B+

Retailer 9

$16,147 CAD

$11,559 USD

View

B+

Retailer 10

$18,523 CAD

$13,260 USD

View

Most Expensive

Do Amore Diamonds

27-5A8A2550F · Oct 30

$34,909 CAD

$24,990 USD

View

10 more retailers have this diamond

Prices start from $5,734 CADSave up to $29,174 CAD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

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A+

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