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Round|Lab Grown|IGI

1.23ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG782626897

Shape and cutting style on the report: Round brilliant

Certificate IGI LG782626897

Diamond specifications and retailer prices

From £131 GBP
As of November 3, 2026
Save £625 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £756 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG782626897 or 782626897. Listed at 16 retailers as of November 3, 2026, with prices from £131 to £756, a £625 spread on the same certified stone. MOH London lists it at £756. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782626897
Dimensions6.89 × 6.84 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.89 mm6.84 mm1.23 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG782626897
Side View
Table 60.0%Crown 34.9°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 61.5%

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: £756 GBP|Low: £126 GBP|High: £768 GBP|Avg: £386 GBP|-0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 10£131 GBP
Retailer 12£162 GBP
Retailer 11£219 GBP
Retailer 7£280 GBP
Retailer 8£301 GBP
Retailer 5£307 GBP
Retailer 2£378 GBP
Retailer 6£395 GBP
Retailer 13£402 GBP
Retailer 3£529 GBP
Retailer 9£551 GBP
Retailer 4£561 GBP
MOH London£756 GBP

29 data points across 13 retailers

16 retailers£131 GBP to £756 GBP

A
Cheapest Retailer
-
£131 GBP
A
Retailer 2
-
£152 GBP
View
A
Retailer 3
-
£162 GBP
View
Retailer 4
-
£162 GBP
View
Price last confirmed 11 days ago
B+
Retailer 5
-
£219 GBP
View
A
Retailer 6
-
£280 GBP
View
A
Retailer 7
-
£301 GBP
View
A
Retailer 8
-
£307 GBP
View
B+
Retailer 9
-
£378 GBP
View
B+
Retailer 10
-
£395 GBP
View
B+
Retailer 11
-
£402 GBP
View
B+
Retailer 12
-
£521 GBP
View
B+
Retailer 13
-
£529 GBP
View
B
Retailer 14
-
£551 GBP
View
B
Retailer 15
-
£561 GBP
View
Most Expensive
B
MOH London
LG782626897 · Nov 5
£756 GBP
View
15 more retailers have this diamond
Prices start from £131 GBPSave up to £625 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
£131 GBP