Princess|Lab Grown|IGI

0.77ct F SI2 Princess Lab Grown Diamond

ID • F/SI2 • IGI LG591375545

Shape and cutting style on the report: Princess cut

Certificate IGI LG591375545

Diamond specifications and retailer prices

From £104 GBP
$139 USD
As of October 30, 2026
Save £353 GBP (77%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £668 GBP at MOH London · As of October 21, 2026
View at MOH London

About this 0.77ct lab-grown princess diamond

This 0.77ct lab-grown princess sits in the just-under-one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG591375545 or 591375545. Listed at 8 retailers as of October 30, 2026, with a 340% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.77
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591375545
Dimensions4.94 × 4.92 × 3.56 mm
L/W Ratio1.00
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
4.94 mm4.92 mm0.77 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591375545
Side View
Table 69.0%Crown 45.5°Girdle: MediumPavilion 39.3°Culet: NoneDepth 72.4%

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: £668 GBP|Low: £100 GBP|High: £673 GBP|Avg: £336 GBP|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 18, 2026
Retailer 4£104 GBP
Retailer 7£120 GBP
Retailer 2£194 GBP
Retailer 6£240 GBP
Retailer 3£437 GBP
Retailer 5£457 GBP
Retailer 8£496 GBP
MOH London£668 GBP

11 data points across 8 retailers

8 retailers£104 GBP to £457 GBP

A
Cheapest Retailer
-
£104 GBP
$139 USD
A
Retailer 2
-
£120 GBP
$161 USD
View
A
Retailer 3
-
£194 GBP
$260 USD
View
B+
Retailer 4
-
£240 GBP
$322 USD
View
B
Retailer 5
-
£326 GBP
View
B
Retailer 6
-
£437 GBP
$586 USD
View
B
Retailer 7
-
£457 GBP
$612 USD
View
Most Expensive
MOH London
LG591375545 · Oct 21
£668 GBP
View
Price last confirmed 11 days ago
7 more retailers have this diamond
Prices start from £104 GBPSave up to £353 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
0.77ct Princess
£104 GBP