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Princess|Lab Grown|IGI

4.09ct D FL Princess Lab Grown Diamond

ID • D/FL • IGI LG754508404

Shape and cutting style on the report: Princess cut

Certificate IGI LG754508404

Diamond specifications and retailer prices

From £4,813 GBP
$6,409 USD
As of October 30, 2026
Save £15,320 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £20,132 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.09ct lab-grown princess diamond

This 4.09ct 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 LG754508404 or 754508404. Listed at 13 retailers as of October 30, 2026, with prices from £4,813 to £20,132, a £15,320 spread on the same certified stone. Taylor and Hart lists it at £20,132. 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

4.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754508404
Dimensions8.74 × 8.72 × 6.33 mm
L/W Ratio1.00
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 mm8.72 mm4.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754508404
Side View
Table 68.0%Crown 42°Girdle: MediumPavilion 39.5°Culet: NoneDepth 72.6%

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 30
Current: £7,545 GBP|Low: £4,813 GBP|High: £22,488 GBP|Avg: £11,029 GBP|+0.1%
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
Taylor and Hart
October 30, 2026
Retailer 13£4,813 GBP
Retailer 5£5,111 GBP
Retailer 11£5,539 GBP
Retailer 2£7,204 GBP
Retailer 6£7,380 GBP
Retailer 10£7,472 GBP
Retailer 1£7,545 GBP
Retailer 3£11,411 GBP
Retailer 8£11,540 GBP
Retailer 7£12,495 GBP
Retailer 9£12,852 GBP
Retailer 4£16,122 GBP
Retailer 12£18,919 GBP
Taylor and Hart£20,132 GBP

36 data points across 14 retailers

13 retailers£4,813 GBP to £20,132 GBP

A
Cheapest Retailer
-
£4,813 GBP
$6,409 USD
A
Retailer 2
-
£5,539 GBP
$7,376 USD
View
A
Retailer 3
-
£7,204 GBP
$9,593 USD
View
A
Retailer 4
-
£7,380 GBP
View
A
Retailer 5
-
£7,472 GBP
$9,950 USD
View
A
Retailer 6
-
£7,545 GBP
HK$78,500 HKD
View
B+
Retailer 7
-
£11,411 GBP
$15,196 USD
View
B+
Retailer 8
-
£11,540 GBP
€14,636 EUR
View
B+
Retailer 9
-
£12,495 GBP
ZAR 268,805 ZAR
View
B+
Retailer 10
-
£12,852 GBP
View
B
Retailer 11
-
£16,122 GBP
$21,470 USD
View
B
Retailer 12
-
£18,919 GBP
$25,194 USD
View
Most Expensive
B
Taylor and Hart
ULKMLX8 · Oct 30
£20,132 GBP
$26,810 USD
View
12 more retailers have this diamond
Prices start from £4,813 GBPSave up to £15,320 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
4.09ct Princess
£4,813 GBP