CaratHunter
Plans
Princess|Lab Grown|IGI

4.00ct D FL Princess Lab Grown Diamond

ID • D/FL • IGI LG780662873

Shape and cutting style on the report: Princess cut

Certificate IGI LG780662873

Diamond specifications and retailer prices

From £4,707 GBP
$6,268 USD
As of October 30, 2026
Save £15,057 GBP (76%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £19,764 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4ct lab-grown princess diamond

This 4ct 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 LG780662873 or 780662873. Listed at 13 retailers as of October 30, 2026, with prices from £4,707 to £19,764, a £15,057 spread on the same certified stone. Taylor and Hart lists it at £19,764. 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

4.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662873
Dimensions8.79 × 8.58 × 6.35 mm
L/W Ratio1.02
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
8.79 mm8.58 mm4.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662873
Side View
Table 60.0%Crown 38.4°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 74.0%

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: Oct 30
Current: £9,777 GBP|Low: £4,707 GBP|High: £22,187 GBP|Avg: £10,790 GBP|-39.9%
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 2£4,707 GBP
Retailer 5£4,998 GBP
Retailer 12£5,423 GBP
Retailer 3£7,046 GBP
Retailer 7£7,218 GBP
Retailer 11£7,367 GBP
Retailer 6£7,382 GBP
Retailer 1£9,777 GBP
Retailer 4£11,167 GBP
Retailer 9£11,285 GBP
Retailer 8£12,228 GBP
Retailer 10£12,576 GBP
Retailer 13£18,503 GBP
Taylor and Hart£19,764 GBP

36 data points across 14 retailers

13 retailers£4,707 GBP to £19,764 GBP

A
Cheapest Retailer
-
£4,707 GBP
$6,268 USD
A
Retailer 2
-
£5,423 GBP
$7,222 USD
View
A
Retailer 3
-
£7,046 GBP
$9,383 USD
View
A
Retailer 4
-
£7,218 GBP
View
A
Retailer 5
-
£7,367 GBP
$9,810 USD
View
A
Retailer 6
-
£7,382 GBP
HK$76,800 HKD
View
B
Retailer 7
-
£9,777 GBP
$13,020 USD
View
B+
Retailer 8
-
£11,167 GBP
$14,871 USD
View
B+
Retailer 9
-
£11,285 GBP
€14,313 EUR
View
B+
Retailer 10
-
£12,228 GBP
ZAR 263,073 ZAR
View
B+
Retailer 11
-
£12,576 GBP
View
B
Retailer 12
-
£18,503 GBP
$24,640 USD
View
Most Expensive
B
Taylor and Hart
RA4U6E2 · Oct 30
£19,764 GBP
$26,320 USD
View
12 more retailers have this diamond
Prices start from £4,707 GBPSave up to £15,057 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
4.00ct Princess
£4,707 GBP