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Round|Lab Grown|IGI

1.26ct J SI2 Round Lab Grown Diamond

EX • J/SI2 • IGI LG480168608

Shape and cutting style on the report: Round brilliant

Certificate IGI LG480168608

Diamond specifications and retailer prices

From £417 GBP
As of November 5, 2026
Save £1,820 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,237 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG480168608 or 480168608. Listed at 10 retailers as of November 5, 2026, with prices from £417 to £2,237, a £1,820 spread on the same certified stone. MOH London lists it at £2,237. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.26
Carat
J
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle31.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG480168608
Dimensions7.01 × 6.97 × 4.21 mm
L/W Ratio1.01
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
7.01 mm6.97 mm1.26 ctJ / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG480168608
Side View
Table 61.0%Crown 31.9°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 60.2%

Caratlytics Score

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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 5
Current: £2,237 GBP|Low: £334 GBP|High: £2,270 GBP|Avg: £888 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 4£417 GBP
Retailer 7£467 GBP
Retailer 5£516 GBP
Retailer 8£516 GBP
Retailer 2£535 GBP
Retailer 6£797 GBP
Retailer 9£834 GBP
Retailer 10£1,081 GBP
Retailer 3£1,334 GBP
MOH London£2,237 GBP

18 data points across 10 retailers

10 retailers£417 GBP to £2,237 GBP

A
Cheapest Retailer
-
£417 GBP
B+
Retailer 2
-
£467 GBP
View
B+
Retailer 3
-
£467 GBP
View
Final sale: no returns
Retailer 4
-
£516 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£516 GBP
View
B+
Retailer 6
-
£535 GBP
View
B
Retailer 7
-
£797 GBP
View
B
Retailer 8
-
£1,334 GBP
View
B
Retailer 9
-
£1,359 GBP
View
Most Expensive
B
MOH London
LG480168608 · Nov 5
£2,237 GBP
View
9 more retailers have this diamond
Prices start from £417 GBPSave up to £1,820 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
1.26ct Round
£417 GBP