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Princess|Lab Grown|IGI

0.51ct F SI1 Princess Lab Grown Diamond

ID • F/SI1 • IGI LG841687947

Shape and cutting style on the report: Princess cut

Certificate IGI LG841687947

Diamond specifications and retailer prices

From £113 GBP
As of November 6, 2026
Save £492 GBP (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £605 GBP at MOH London · As of November 4, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG841687947 or 841687947. Listed at 7 retailers as of November 4, 2026, with prices from £113 to £605, a £492 spread on the same certified stone. MOH London lists it at £605. 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

0.51
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle42.7°
Pavilion angle37.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841687947
Dimensions4.43 × 4.36 × 2.99 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.43 mm4.36 mm0.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG841687947
Side View
Table 70.0%Crown 42.7°Girdle: ThinPavilion 37.3°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: Nov 6
Current: £605 GBP|Low: £113 GBP|High: £611 GBP|Avg: £242 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7£113 GBP
Retailer 5£126 GBP
Retailer 2£152 GBP
Retailer 4£199 GBP
Retailer 3£208 GBP
Retailer 6£309 GBP
MOH London£605 GBP

24 data points across 7 retailers

7 retailers£113 GBP to £605 GBP

B+
Cheapest Retailer
-
£113 GBP
A
Retailer 2
-
£126 GBP
View
B+
Retailer 3
-
£152 GBP
View
B+
Retailer 4
-
£199 GBP
View
B+
Retailer 5
-
£208 GBP
View
B
Retailer 6
-
£309 GBP
View
Most Expensive
B
MOH London
LG841687947 · Nov 4
£605 GBP
View
6 more retailers have this diamond
Prices start from £113 GBPSave up to £492 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
£113 GBP