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Princess|Lab Grown|IGI

0.51ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG840637303

Shape and cutting style on the report: Princess cut

Certificate IGI LG840637303

Diamond specifications and retailer prices

From £197 GBP
As of October 28, 2026
Save £226 GBP (53%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £990 GBP at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown princess diamond

This 0.51ct lab-grown princess sits in the half to three-quarter carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840637303 or 840637303. Listed at 9 retailers as of October 28, 2026, with a 115% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840637303
Dimensions4.40 × 4.40 × 3.02 mm
L/W Ratio1.00
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
4.40 mm4.40 mm0.51 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840637303
Side View
Table 74.0%Crown 42.6°Girdle: MED-STKPavilion 37.9°CuletDepth 68.6%

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 28
Current: £990 GBP|Low: £171 GBP|High: £1,000 GBP|Avg: £360 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 28, 2026
Retailer 2£197 GBP
Retailer 5£197 GBP
Retailer 6£227 GBP
Retailer 4£235 GBP
Retailer 3£286 GBP
Retailer 7£364 GBP
Retailer 8£423 GBP
MOH London£990 GBP

27 data points across 8 retailers

9 retailers£197 GBP to £423 GBP

A
Cheapest Retailer
-
£197 GBP
Retailer 2
-
£197 GBP
A$407 AUD
View
Price last confirmed 26 days ago
B+
Retailer 3
-
£227 GBP
$304 USD
View
Retailer 4
-
£235 GBP
$315 USD
View
Price last confirmed 13 days ago
B+
Retailer 5
-
£283 GBP
$380 USD
View
B+
Retailer 6
-
£286 GBP
View
Retailer 7
-
£364 GBP
$489 USD
View
Price last confirmed 7 days ago
B
Retailer 8
-
£423 GBP
$567 USD
View
Most Expensive
MOH London
LG840637303 · Oct 26
£990 GBP
View
Price under review
8 more retailers have this diamond
Prices start from £197 GBPSave up to £226 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
0.51ct Princess
£197 GBP