Cushion|Lab Grown|IGI

4.05ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG771607368

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG771607368

Diamond specifications and retailer prices

From €3,918 EUR

£3,446 GBP

As of October 30, 2026

Save €12,834 EUR (77%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: €16,751 EUR at Taylor and Hart · As of October 30, 2026

View at Taylor and Hart

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG771607368 or 771607368. Listed at 16 retailers as of October 30, 2026, with prices from €3,918 to €16,751, a €12,834 spread on the same certified stone. Taylor and Hart lists it at €16,751. 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

4.05

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle37.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG771607368

Dimensions10.67 × 8.17 × 5.52 mm

L/W Ratio1.31

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG771607368

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: €3,918 EUR|Low: €3,904 EUR|High: €16,123 EUR|Avg: €8,392 EUR|-0.8%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

October 30, 2026

Retailer 1€3,918 EUR

Retailer 3€4,476 EUR

Retailer 9€4,689 EUR

Retailer 4€6,088 EUR

Retailer 10€7,254 EUR

Retailer 6€7,553 EUR

Retailer 7€9,761 EUR

Retailer 5€9,980 EUR

Retailer 8€10,274 EUR

Retailer 11€11,807 EUR

Retailer 2€16,123 EUR

39 data points across 11 retailers

16 retailers€3,918 EUR to €16,751 EUR

Cheapest Retailer

€3,918 EUR

£3,446 GBP

Retailer 2

€4,476 EUR

$5,001 USD

View

Retailer 3

€4,527 EUR

$5,058 USD

View

Final sale: no returns

Retailer 4

€4,689 EUR

$5,239 USD

View

Price last confirmed 14 days ago

Retailer 5

€4,726 EUR

$5,280 USD

View

Retailer 6

€5,611 EUR

$6,269 USD

View

Retailer 7

€6,088 EUR

£5,355 GBP

View

Retailer 8

€6,616 EUR

£5,820 GBP

View

B+

Retailer 9

€7,254 EUR

$8,104 USD

View

B+

Retailer 10

€7,553 EUR

View

B+

Retailer 11

€9,761 EUR

£8,587 GBP

View

B+

Retailer 12

€9,980 EUR

ZAR 180,133 ZAR

View

Retailer 13

€10,274 EUR

A$17,658 AUD

View

Price last confirmed 8 days ago

B+

Retailer 14

€11,807 EUR

$13,191 USD

View

Retailer 15

€16,123 EUR

SGD 24,342 SGD

View

Most Expensive

Taylor and Hart

R8JQKCD · Oct 30

€16,751 EUR

$18,715 USD

View

15 more retailers have this diamond

Prices start from €3,918 EURSave up to €12,834 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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