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Round|Lab Grown|IGI

1.23ct G VVS1 Round Lab Grown Diamond

ID • G/VVS1 • IGI LG592351769

Shape and cutting style on the report: Round brilliant

Certificate IGI LG592351769

Diamond specifications and retailer prices

From £280 GBP
As of November 1, 2026
Save £478 GBP (63%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £758 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG592351769 or 592351769. Listed at 10 retailers as of November 1, 2026, with prices from £280 to £758, a £478 spread on the same certified stone. MOH London lists it at £758. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
G
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG592351769
Dimensions6.85 × 6.84 × 4.23 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.85 mm6.84 mm1.23 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG592351769
Side View
Table 58.0%Crown 34.1°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £758 GBP|Low: £270 GBP|High: £770 GBP|Avg: £419 GBP|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 8£274 GBP
Retailer 5£280 GBP
Retailer 2£288 GBP
Retailer 9£290 GBP
Retailer 6£336 GBP
Retailer 4£396 GBP
Retailer 3£441 GBP
Retailer 7£552 GBP
Retailer 10£563 GBP
MOH London£758 GBP

33 data points across 10 retailers

10 retailers£280 GBP to £758 GBP

Retailer 1
-
£163 GBP
Price last confirmed 28 days ago
A
Retailer 2
-
£280 GBP
View
A
Retailer 3
-
£288 GBP
View
A
Retailer 4
-
£290 GBP
View
B+
Retailer 5
-
£336 GBP
View
B+
Retailer 6
-
£396 GBP
View
B+
Retailer 7
-
£441 GBP
View
B
Retailer 8
-
£552 GBP
View
B
Retailer 9
-
£563 GBP
View
Most Expensive
B
MOH London
LG592351769 · Nov 5
£758 GBP
View
9 more retailers have this diamond
Prices start from £280 GBPSave up to £478 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 Round
£280 GBP