CaratHunter
Plans
Princess|Lab Grown|IGI

1.23ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG851685943

Shape and cutting style on the report: Princess cut

Certificate IGI LG851685943

Diamond specifications and retailer prices

From £576 GBP
As of November 5, 2026
Save £199 GBP (26%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £775 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown princess diamond

This 1.23ct lab-grown princess sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851685943 or 851685943. Listed at 3 retailers as of November 5, 2026, with prices from £576 to £775, a £199 spread on the same certified stone. MOH London lists it at £775. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851685943
Dimensions5.98 × 5.77 × 4.19 mm
L/W Ratio1.04
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.98 mm5.77 mm1.23 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851685943
Side View
Table 66.0%Crown 43.3°Girdle: MediumPavilion 38.3°Culet: NoneDepth 72.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £775 GBP|Low: £576 GBP|High: £775 GBP|Avg: £642 GBP
MOH London
Retailer 2
November 5, 2026
Retailer 2£576 GBP
MOH London£775 GBP

2 data points across 2 retailers

3 retailers£576 GBP to £775 GBP

B+
Cheapest Retailer
-
£576 GBP
B+
Retailer 2
-
£580 GBP
View
Most Expensive
B
MOH London
LG851685943 · Nov 5
£775 GBP
View
2 more retailers have this diamond
Prices start from £576 GBPSave up to £199 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.

B+
1.23ct Princess
£576 GBP