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Round|Lab Grown|IGI

1.23ct K VS1 Round Lab Grown Diamond

EX • K/VS1 • IGI LG442067165

Shape and cutting style on the report: Round brilliant

Certificate IGI LG442067165

Diamond specifications and retailer prices

From £821 GBP
As of November 5, 2026
Save £1,111 GBP (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £3,065 GBP at MOH London · As of October 25, 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 LG442067165 or 442067165. Listed at 11 retailers as of November 4, 2026, with a 135% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG442067165
Dimensions6.93 × 6.94 × 4.15 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
6.93 mm6.94 mm1.23 ctK / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG442067165
Side View
Table 58.5%Crown 32.1°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.8%

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: £3,065 GBP|Low: £788 GBP|High: £3,097 GBP|Avg: £1,604 GBP|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 6£821 GBP
Retailer 7£953 GBP
Retailer 9£953 GBP
Retailer 5£1,081 GBP
Retailer 2£1,261 GBP
Retailer 10£1,356 GBP
Retailer 8£1,515 GBP
Retailer 4£1,752 GBP
Retailer 11£1,932 GBP
Retailer 3£2,131 GBP
MOH London£3,065 GBP

27 data points across 11 retailers

11 retailers£821 GBP to £1,932 GBP

B+
Cheapest Retailer
-
£821 GBP
B+
Retailer 2
-
£893 GBP
View
B+
Retailer 3
-
£953 GBP
View
Retailer 4
-
£953 GBP
View
Price last confirmed 25 days ago
B+
Retailer 5
-
£1,081 GBP
View
B+
Retailer 6
-
£1,261 GBP
View
B
Retailer 7
-
£1,515 GBP
View
B
Retailer 8
-
£1,752 GBP
View
B
Retailer 9
-
£1,785 GBP
View
B
Retailer 10
-
£1,932 GBP
View
Most Expensive
MOH London
LG442067165 · Oct 25
£3,065 GBP
View
Price last confirmed 11 days ago
10 more retailers have this diamond
Prices start from £821 GBPSave up to £1,111 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 Round
£821 GBP