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Princess|Lab Grown|IGI

1.23ct G VS1 Princess Lab Grown Diamond

GD • G/VS1 • IGI LG605341016

Shape and cutting style on the report: Princess cut

Certificate IGI LG605341016

Diamond specifications and retailer prices

From £156 GBP
As of November 4, 2026
Save £608 GBP (80%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £764 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 G colour (near-colourless) and VS1 clarity (very-slightly-included), with a standard cut grade and certified by IGI LG605341016 or 605341016. Listed at 9 retailers as of November 4, 2026, with prices from £156 to £764, a £608 spread on the same certified stone. MOH London lists it at £764. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
G
Colour
VS1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605341016
Dimensions5.91 × 5.81 × 4.18 mm
L/W Ratio1.02
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
5.91 mm5.81 mm1.23 ctG / VS1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605341016
Side View
Table 71.0%Crown 44.4°Girdle: MED-STKPavilion 38.4°Culet: NoneDepth 71.9%

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 4
Current: £764 GBP|Low: £156 GBP|High: £775 GBP|Avg: £411 GBP|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 5£156 GBP
Retailer 7£259 GBP
Retailer 4£304 GBP
Retailer 3£330 GBP
Retailer 2£349 GBP
Retailer 6£356 GBP
Retailer 9£430 GBP
Retailer 8£742 GBP
MOH London£764 GBP

43 data points across 9 retailers

9 retailers£156 GBP to £764 GBP

A
Cheapest Retailer
-
£156 GBP
Final sale: no returns
B+
Retailer 2
-
£259 GBP
View
B+
Retailer 3
-
£304 GBP
View
B+
Retailer 4
-
£330 GBP
View
B+
Retailer 5
-
£349 GBP
View
B+
Retailer 6
-
£356 GBP
View
Retailer 7
-
£459 GBP
View
Price last confirmed 88 days ago
B
Retailer 8
-
£742 GBP
View
Most Expensive
B
MOH London
LG605341016 · Nov 5
£764 GBP
View
8 more retailers have this diamond
Prices start from £156 GBPSave up to £608 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
1.23ct Princess
£156 GBP