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Princess|Lab Grown|IGI

4.26ct D FL Princess Lab Grown Diamond

ID • D/FL • IGI LG787621664

Shape and cutting style on the report: Princess cut

Certificate IGI LG787621664

Diamond specifications and retailer prices

From £4,309 GBP
$5,774 USD
As of October 31, 2026
Save £16,391 GBP (79%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £20,700 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.26ct lab-grown princess diamond

This 4.26ct lab-grown princess 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 LG787621664 or 787621664. Listed at 13 retailers as of October 31, 2026, with prices from £4,309 to £20,700, a £16,391 spread on the same certified stone. Taylor and Hart lists it at £20,700. 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

4.26
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG787621664
Dimensions8.81 × 8.75 × 6.41 mm
L/W Ratio1.01
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
8.81 mm8.75 mm4.26 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG787621664
Side View
Table 68.0%Crown 44°Girdle: MediumPavilion 39.1°Culet: NoneDepth 73.3%

Caratlytics Score

How it works →
A+
Exceptional
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 31
Current: £11,917 GBP|Low: £4,309 GBP|High: £22,916 GBP|Avg: £11,949 GBP|-13.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
November 1, 2026
Retailer 7£4,309 GBP
Retailer 8£4,920 GBP
Retailer 5£6,342 GBP
Retailer 11£6,639 GBP
Retailer 3£7,545 GBP
Retailer 6£7,575 GBP
Retailer 10£10,187 GBP
Retailer 9£10,359 GBP
Retailer 1£11,917 GBP
Retailer 2£11,946 GBP
Retailer 12£12,918 GBP
Retailer 4£19,585 GBP
Taylor and Hart£20,700 GBP

37 data points across 13 retailers

13 retailers£4,309 GBP to £20,700 GBP

A+
Cheapest Retailer
-
£4,309 GBP
$5,774 USD
A
Retailer 2
-
£4,920 GBP
$6,592 USD
View
A
Retailer 3
-
£6,342 GBP
$8,498 USD
View
A
Retailer 4
-
£6,639 GBP
HK$69,500 HKD
View
A
Retailer 5
-
£7,545 GBP
$10,110 USD
View
A
Retailer 6
-
£7,575 GBP
View
B+
Retailer 7
-
£10,187 GBP
$13,650 USD
View
B+
Retailer 8
-
£10,359 GBP
$13,880 USD
View
B+
Retailer 9
-
£11,917 GBP
View
B+
Retailer 10
-
£11,946 GBP
€15,244 EUR
View
B+
Retailer 11
-
£12,918 GBP
ZAR 279,630 ZAR
View
B
Retailer 12
-
£19,585 GBP
$26,242 USD
View
Most Expensive
B
Taylor and Hart
QCPVSII · Oct 31
£20,700 GBP
$27,736 USD
View
12 more retailers have this diamond
Prices start from £4,309 GBPSave up to £16,391 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 Princess
£4,309 GBP