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Cushion|Lab Grown|IGI

4.07ct E FL Cushion Lab Grown Diamond

EX • E/FL • IGI LG804659728

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

Certificate IGI LG804659728

Diamond specifications and retailer prices

From £4,356 GBP
HK$45,600 HKD
As of October 30, 2026
Save £9,461 GBP (68%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £13,817 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 4.07ct lab-grown cushion diamond

This 4.07ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804659728 or 804659728. Listed at 13 retailers as of October 30, 2026, with prices from £4,356 to £13,817, a £9,461 spread on the same certified stone. With Clarity lists it at £13,817. 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

4.07
Carat
E
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804659728
Dimensions9.26 × 9.20 × 5.98 mm
L/W Ratio1.01
Girdle conditionFaceted
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
Top View
9.26 mm9.20 mm4.07 ctE / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804659728
Side View
Table 60.0%Crown 39.4°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
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: £4,587 GBP|Low: £4,356 GBP|High: £16,777 GBP|Avg: £7,758 GBP|-18.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
October 31, 2026
Retailer 2£4,356 GBP
Retailer 1£4,587 GBP
Retailer 11£4,589 GBP
Retailer 12£5,353 GBP
Retailer 7£5,731 GBP
Retailer 9£5,862 GBP
Retailer 3£6,567 GBP
Retailer 6£7,431 GBP
Retailer 8£7,519 GBP
Retailer 5£8,322 GBP
Retailer 10£9,356 GBP
Retailer 4£12,396 GBP
With Clarity£13,817 GBP

42 data points across 13 retailers

13 retailers£4,356 GBP to £13,817 GBP

A
Cheapest Retailer
-
£4,356 GBP
HK$45,600 HKD
A
Retailer 2
-
£4,587 GBP
View
A
Retailer 3
-
£4,589 GBP
$6,149 USD
View
A
Retailer 4
-
£5,353 GBP
$7,172 USD
View
A
Retailer 5
-
£5,731 GBP
€7,313 EUR
View
Retailer 6
-
£5,862 GBP
$7,855 USD
View
Price last confirmed 10 days ago
A
Retailer 7
-
£6,567 GBP
$8,799 USD
View
B+
Retailer 8
-
£7,431 GBP
ZAR 160,859 ZAR
View
B+
Retailer 9
-
£7,519 GBP
View
B+
Retailer 10
-
£8,322 GBP
$11,150 USD
View
B+
Retailer 11
-
£9,356 GBP
$12,536 USD
View
B
Retailer 12
-
£12,396 GBP
$16,609 USD
View
Most Expensive
B
With Clarity
804659728 · Oct 31
£13,817 GBP
$18,513 USD
View
12 more retailers have this diamond
Prices start from £4,356 GBPSave up to £9,461 GBP

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.

A
4.07ct Cushion
£4,356 GBP