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Round|Lab Grown|IGI

1.23ct K VS1 Round Lab Grown Diamond

ID • K/VS1 • IGI LG846648238

Shape and cutting style on the report: Round brilliant

Certificate IGI LG846648238

Diamond specifications and retailer prices

From £327 GBP
As of November 4, 2026
Save £1,114 GBP (77%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £1,441 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 K colour (faint-tinted) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG846648238 or 846648238. Listed at 7 retailers as of November 4, 2026, with prices from £327 to £1,441, a £1,114 spread on the same certified stone. MOH London lists it at £1,441. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
K
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846648238
Dimensions6.84 × 6.82 × 4.26 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.84 mm6.82 mm1.23 ctK / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846648238
Side View
Table 58.0%Crown 34.7°Girdle: MED-STKPavilion 41.4°CuletDepth 62.4%

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: Nov 4
Current: £1,441 GBP|Low: £327 GBP|High: £1,452 GBP|Avg: £688 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7£327 GBP
Retailer 2£458 GBP
Retailer 6£479 GBP
Retailer 4£496 GBP
Retailer 3£637 GBP
Retailer 5£1,036 GBP
MOH London£1,441 GBP

8 data points across 7 retailers

7 retailers£327 GBP to £1,441 GBP

A
Cheapest Retailer
-
£327 GBP
A
Retailer 2
-
£458 GBP
View
A
Retailer 3
-
£479 GBP
View
A
Retailer 4
-
£496 GBP
View
B+
Retailer 5
-
£637 GBP
View
B+
Retailer 6
-
£1,036 GBP
View
Most Expensive
B
MOH London
LG846648238 · Nov 5
£1,441 GBP
View
6 more retailers have this diamond
Prices start from £327 GBPSave up to £1,114 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
£327 GBP