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Cushion|Lab Grown|IGI

4.26ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG787622969

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG787622969

Diamond specifications and retailer prices

From £3,830 GBP
$5,089 USD
As of October 29, 2026
Save £17,836 GBP (82%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £21,666 GBP at With Clarity · As of October 28, 2026
View at With Clarity

About this 4.26ct lab-grown cushion diamond

This 4.26ct 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 LG787622969 or 787622969. Listed at 13 retailers as of October 28, 2026, with prices from £3,830 to £21,666, a £17,836 spread on the same certified stone. With Clarity lists it at £21,666. 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

4.26
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787622969
Dimensions10.71 × 8.69 × 5.79 mm
L/W Ratio1.23
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
10.71 mm8.69 mm4.26 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787622969
Side View
Table 59.0%Crown 36.3°Girdle: MED-STKPavilion 35.8°Culet: NoneDepth 66.6%

Caratlytics Score

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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: £6,281 GBP|Low: £3,830 GBP|High: £25,277 GBP|Avg: £9,691 GBP|-26.2%
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 29, 2026
Retailer 6£3,830 GBP
Retailer 8£4,807 GBP
Retailer 7£5,125 GBP
Retailer 9£5,277 GBP
Retailer 1£6,281 GBP
Retailer 3£6,450 GBP
Retailer 10£7,648 GBP
Retailer 5£8,487 GBP
Retailer 2£8,850 GBP
Retailer 12£11,003 GBP
Retailer 11£14,589 GBP
Retailer 4£16,835 GBP
With Clarity£21,666 GBP

39 data points across 13 retailers

13 retailers£3,830 GBP to £21,666 GBP

A
Cheapest Retailer
-
£3,830 GBP
$5,089 USD
A
Retailer 2
-
£4,807 GBP
$6,387 USD
View
A
Retailer 3
-
£5,125 GBP
HK$53,200 HKD
View
A
Retailer 4
-
£5,277 GBP
View
A
Retailer 5
-
£6,281 GBP
€7,949 EUR
View
B+
Retailer 6
-
£6,450 GBP
$8,570 USD
View
B+
Retailer 7
-
£7,648 GBP
$10,162 USD
View
B+
Retailer 8
-
£8,487 GBP
View
B+
Retailer 9
-
£8,850 GBP
ZAR 189,978 ZAR
View
B+
Retailer 10
-
£11,003 GBP
$14,620 USD
View
B
Retailer 11
-
£14,589 GBP
$19,385 USD
View
B
Retailer 12
-
£16,835 GBP
$22,370 USD
View
Most Expensive
B
With Clarity
787622969 · Oct 28
£21,666 GBP
$28,789 USD
View
12 more retailers have this diamond
Prices start from £3,830 GBPSave up to £17,836 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
4.26ct Cushion
£3,830 GBP