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Round|Lab Grown|IGI

1.23ct G VVS1 Round Lab Grown Diamond

ID • G/VVS1 • IGI LG845673735

Shape and cutting style on the report: Round brilliant

Certificate IGI LG845673735

Diamond specifications and retailer prices

From £130 GBP
As of November 3, 2026
Save £619 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £749 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 LG845673735 or 845673735. Listed at 20 retailers as of November 3, 2026, with prices from £130 to £749, a £619 spread on the same certified stone. MOH London lists it at £749. 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 angle35.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845673735
Dimensions6.85 × 6.89 × 4.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.85 mm6.89 mm1.23 ctG / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845673735
Side View
Table 58.0%Crown 35.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.1%

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 3
Current: £749 GBP|Low: £130 GBP|High: £754 GBP|Avg: £357 GBP|-0.7%
MOH London
Retailer 2
Retailer 3
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Retailer 12
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Retailer 20
November 5, 2026
Retailer 9£130 GBP
Retailer 20£150 GBP
Retailer 5£161 GBP
Retailer 19£161 GBP
Retailer 8£180 GBP
Retailer 7£216 GBP
Retailer 13£267 GBP
Retailer 15£272 GBP
Retailer 17£277 GBP
Retailer 2£284 GBP
Retailer 4£335 GBP
Retailer 3£345 GBP
Retailer 16£391 GBP
Retailer 18£400 GBP
Retailer 14£433 GBP
Retailer 6£516 GBP
Retailer 11£533 GBP
Retailer 12£541 GBP
Retailer 10£556 GBP
MOH London£749 GBP

18 data points across 20 retailers

20 retailers£130 GBP to £749 GBP

A
Cheapest Retailer
-
£130 GBP
A
Retailer 2
-
£150 GBP
View
A
Retailer 3
-
£161 GBP
View
Retailer 4
-
£161 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£180 GBP
View
B+
Retailer 6
-
£216 GBP
View
A
Retailer 7
-
£267 GBP
View
A
Retailer 8
-
£272 GBP
View
A
Retailer 9
-
£277 GBP
View
A
Retailer 10
-
£284 GBP
View
B+
Retailer 11
-
£335 GBP
View
B+
Retailer 12
-
£345 GBP
View
B+
Retailer 13
-
£391 GBP
View
B+
Retailer 14
-
£400 GBP
View
B+
Retailer 15
-
£433 GBP
View
B
Retailer 16
-
£516 GBP
View
B
Retailer 17
-
£533 GBP
View
B
Retailer 18
-
£541 GBP
View
B
Retailer 19
-
£556 GBP
View
Most Expensive
B
MOH London
LG845673735 · Nov 5
£749 GBP
View
19 more retailers have this diamond
Prices start from £130 GBPSave up to £619 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
£130 GBP