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Princess|Lab Grown|IGI

4.25ct D FL Princess Lab Grown Diamond

EX • D/FL • IGI LG790611623

Shape and cutting style on the report: Princess cut

Certificate IGI LG790611623

Diamond specifications and retailer prices

From £9,381 GBP
$12,569 USD
As of November 1, 2026
Save £22,228 GBP (70%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £31,609 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.25ct lab-grown princess diamond

This 4.25ct 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 LG790611623 or 790611623. Listed at 21 retailers as of October 31, 2026, with prices from £9,381 to £31,609, a £22,228 spread on the same certified stone. Taylor and Hart lists it at £31,609. 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

4.25
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790611623
Dimensions8.74 × 8.64 × 6.28 mm
L/W Ratio1.01
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
8.74 mm8.64 mm4.25 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790611623
Side View
Table 67.0%Crown 43.3°Girdle: MED-STKPavilion 38.1°Culet: NoneDepth 72.7%

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: Nov 1
Current: £12,920 GBP|Low: £7,605 GBP|High: £38,938 GBP|Avg: £16,610 GBP|-1.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Taylor and Hart
October 31, 2026
Retailer 10£7,605 GBP
Retailer 6£9,381 GBP
Retailer 19£9,517 GBP
Retailer 7£9,746 GBP
Retailer 11£10,131 GBP
Retailer 17£10,346 GBP
Retailer 8£10,658 GBP
Retailer 3£10,933 GBP
Retailer 2£11,040 GBP
Retailer 4£11,040 GBP
Retailer 18£11,536 GBP
Retailer 1£12,920 GBP
Retailer 9£15,821 GBP
Retailer 15£16,246 GBP
Retailer 16£16,815 GBP
Retailer 14£18,580 GBP
Retailer 12£23,500 GBP
Retailer 20£26,908 GBP
Retailer 13£30,772 GBP
Taylor and Hart£31,609 GBP
Retailer 5£38,938 GBP

33 data points across 21 retailers

21 retailers£9,381 GBP to £31,609 GBP

B+
Cheapest Retailer
-
£9,381 GBP
$12,569 USD
A
Retailer 2
-
£9,517 GBP
$12,752 USD
View
B+
Retailer 3
-
£9,746 GBP
$13,058 USD
View
B+
Retailer 4
-
£10,131 GBP
$13,575 USD
View
B+
Retailer 5
-
£10,346 GBP
$13,863 USD
View
B+
Retailer 6
-
£10,658 GBP
$14,281 USD
View
Final sale: no returns
B+
Retailer 7
-
£10,933 GBP
$14,649 USD
View
B+
Retailer 8
-
£11,040 GBP
$14,793 USD
View
Retailer 9
-
£11,040 GBP
$14,793 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
£11,536 GBP
$15,457 USD
View
B+
Retailer 11
-
£12,920 GBP
View
B
Retailer 12
-
£15,821 GBP
View
B+
Retailer 13
-
£16,246 GBP
View
B+
Retailer 14
-
£16,815 GBP
$22,530 USD
View
B
Retailer 15
-
£18,580 GBP
€23,710 EUR
View
B
Retailer 16
-
£23,500 GBP
ZAR 508,679 ZAR
View
B
Retailer 17
-
£26,908 GBP
$36,054 USD
View
B
Retailer 18
-
£28,269 GBP
$37,878 USD
View
B
Retailer 19
-
£30,772 GBP
$41,231 USD
View
Most Expensive
B
Taylor and Hart
9DWO0FL · Oct 31
£31,609 GBP
$42,352 USD
View
19 more retailers have this diamond
Prices start from £9,381 GBPSave up to £22,228 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
4.25ct Princess
£9,381 GBP