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Cushion|Lab Grown|IGI

4.24ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG768630665

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG768630665

Diamond specifications and retailer prices

From £3,475 GBP
$4,628 USD
As of October 29, 2026
Save £13,248 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £16,723 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.24ct lab-grown cushion diamond

This 4.24ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG768630665 or 768630665. Listed at 12 retailers as of October 29, 2026, with prices from £3,475 to £16,723, a £13,248 spread on the same certified stone. Brilliant Earth lists it at £16,723. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.24
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG768630665
Dimensions10.55 × 8.77 × 5.79 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
Top View
10.55 mm8.77 mm4.24 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768630665
Side View
Table 57.0%Crown 37°Girdle: MED-THKPavilion 36.1°Culet: NoneDepth 66.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £16,723 GBP|Low: £3,475 GBP|High: £16,723 GBP|Avg: £8,261 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 11£3,475 GBP
Retailer 12£3,510 GBP
Retailer 8£4,796 GBP
Retailer 2£4,922 GBP
Retailer 4£6,165 GBP
Retailer 9£6,238 GBP
Retailer 5£6,405 GBP
Retailer 13£6,881 GBP
Retailer 7£8,083 GBP
Retailer 10£8,431 GBP
Retailer 3£10,927 GBP
Retailer 6£13,541 GBP
Brilliant Earth£16,723 GBP

41 data points across 13 retailers

12 retailers£3,475 GBP to £16,723 GBP

A
Cheapest Retailer
-
£3,475 GBP
$4,628 USD
A
Retailer 2
-
£3,510 GBP
$4,674 USD
View
A
Retailer 3
-
£4,796 GBP
HK$49,900 HKD
View
A
Retailer 4
-
£4,922 GBP
View
A
Retailer 5
-
£6,238 GBP
€7,912 EUR
View
B+
Retailer 6
-
£6,405 GBP
$8,530 USD
View
B+
Retailer 7
-
£6,881 GBP
$9,163 USD
View
B+
Retailer 8
-
£8,083 GBP
ZAR 173,885 ZAR
View
B+
Retailer 9
-
£8,431 GBP
View
B+
Retailer 10
-
£10,927 GBP
$14,552 USD
View
B
Retailer 11
-
£13,541 GBP
$18,032 USD
View
Most Expensive
B
Brilliant Earth
20870215Y · Oct 29
£16,723 GBP
$22,270 USD
View
11 more retailers have this diamond
Prices start from £3,475 GBPSave up to £13,248 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
4.24ct Cushion
£3,475 GBP