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Princess|Lab Grown|IGI

1.51ct F SI1 Princess Lab Grown Diamond

ID • F/SI1 • IGI LG523263406

Shape and cutting style on the report: Princess cut

Certificate IGI LG523263406

Diamond specifications and retailer prices

From £217 GBP
As of November 6, 2026
Save £861 GBP (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,079 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown princess diamond

This 1.51ct lab-grown princess sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG523263406 or 523263406. Listed at 15 retailers as of November 1, 2026, with prices from £217 to £1,079, a £861 spread on the same certified stone. MOH London lists it at £1,079. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG523263406
Dimensions6.35 × 6.26 × 4.57 mm
L/W Ratio1.01
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.35 mm6.26 mm1.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG523263406
Side View
Table 68.5%Crown 41.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 73.0%

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: Nov 6
Current: £1,079 GBP|Low: £208 GBP|High: £1,248 GBP|Avg: £567 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 8£217 GBP
Retailer 3£269 GBP
Retailer 9£269 GBP
Retailer 2£342 GBP
Retailer 6£385 GBP
Retailer 10£442 GBP
Retailer 4£471 GBP
Retailer 5£799 GBP
Retailer 7£827 GBP
Retailer 11£865 GBP
MOH London£1,079 GBP

43 data points across 11 retailers

15 retailers£217 GBP to £1,079 GBP

A
Cheapest Retailer
-
£217 GBP
A
Retailer 2
-
£243 GBP
View
Final sale: no returns
A
Retailer 3
-
£252 GBP
View
A
Retailer 4
-
£269 GBP
View
Retailer 5
-
£269 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£342 GBP
View
B+
Retailer 7
-
£385 GBP
View
B+
Retailer 8
-
£442 GBP
View
B+
Retailer 9
-
£463 GBP
View
B+
Retailer 10
-
£471 GBP
View
B
Retailer 11
-
£612 GBP
View
B
Retailer 12
-
£799 GBP
View
B
Retailer 13
-
£827 GBP
View
B
Retailer 14
-
£865 GBP
View
Most Expensive
B
MOH London
LG523263406 · Nov 1
£1,079 GBP
View
14 more retailers have this diamond
Prices start from £217 GBPSave up to £861 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
1.51ct Princess
£217 GBP