Cushion|Lab Grown|IGI

4.28ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG754594736

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG754594736

Diamond specifications and retailer prices

From €4,312 EUR

$4,817 USD

As of October 30, 2026

Save €19,819 EUR (82%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: €24,131 EUR at With Clarity · As of October 31, 2026

View at With Clarity

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 LG754594736 or 754594736. Listed at 14 retailers as of October 30, 2026, with prices from €4,312 to €24,131, a €19,819 spread on the same certified stone. With Clarity lists it at €24,131. 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

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.4°

Pavilion angle37.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG754594736

Dimensions10.72 × 8.90 × 5.80 mm

L/W Ratio1.20

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG754594736

Side View

Caratlytics Score

How it works →

Excellent

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 30

Current: €7,453 EUR|Low: €4,312 EUR|High: €30,205 EUR|Avg: €11,845 EUR|-26.8%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

With Clarity

October 31, 2026

Retailer 7€4,312 EUR

Retailer 6€5,676 EUR

Retailer 2€5,706 EUR

Retailer 11€5,922 EUR

Retailer 1€7,453 EUR

Retailer 5€7,707 EUR

Retailer 8€8,545 EUR

Retailer 13€9,721 EUR

Retailer 3€10,140 EUR

Retailer 9€11,869 EUR

Retailer 4€13,148 EUR

Retailer 12€16,293 EUR

Retailer 10€16,524 EUR

With Clarity€24,131 EUR

35 data points across 14 retailers

14 retailers€4,312 EUR to €24,131 EUR

Cheapest Retailer

€4,312 EUR

$4,817 USD

Retailer 2

€5,676 EUR

$6,341 USD

View

Retailer 3

€5,706 EUR

HK$49,800 HKD

View

Retailer 4

€5,922 EUR

£5,210 GBP

View

Retailer 5

€7,453 EUR

View

B+

Retailer 6

€7,707 EUR

$8,610 USD

View

B+

Retailer 7

€8,545 EUR

$9,547 USD

View

B+

Retailer 8

€9,721 EUR

ZAR 175,446 ZAR

View

B+

Retailer 9

€10,140 EUR

£8,920 GBP

View

B+

Retailer 10

€11,869 EUR

$13,260 USD

View

B+

Retailer 11

€13,148 EUR

$14,689 USD

View

B+

Retailer 12

€16,293 EUR

$18,203 USD

View

B+

Retailer 13

€16,524 EUR

SGD 24,947 SGD

View

Most Expensive

With Clarity

754594736 · Oct 31

€24,131 EUR

$26,959 USD

View

13 more retailers have this diamond

Prices start from €4,312 EURSave up to €19,819 EUR

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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4.28ct Cushion

€4,312 EUR