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Round|Lab Grown|IGI

1.41ct J SI1 Round Lab Grown Diamond

EX • J/SI1 • IGI LG400942943

Shape and cutting style on the report: Round brilliant

Certificate IGI LG400942943

Diamond specifications and retailer prices

From £496 GBP
As of November 5, 2026
Save £1,925 GBP (80%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,420 GBP at MOH London · As of November 3, 2026
View at MOH London

About this 1.41ct lab-grown round diamond

This 1.41ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG400942943 or 400942943. Listed at 12 retailers as of November 3, 2026, with prices from £496 to £2,420, a £1,925 spread on the same certified stone. MOH London lists it at £2,420. 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

1.41
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400942943
Dimensions7.25 × 7.21 × 4.41 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.25 mm7.21 mm1.41 ctJ / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG400942943
Side View
Table 56.5%Crown 36.3°Girdle: THN-MEDPavilion 40.2°Culet: NoneDepth 61.0%

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: £2,420 GBP|Low: £476 GBP|High: £2,452 GBP|Avg: £980 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7£496 GBP
Retailer 10£554 GBP
Retailer 8£574 GBP
Retailer 11£574 GBP
Retailer 2£602 GBP
Retailer 12£655 GBP
Retailer 5£706 GBP
Retailer 3£929 GBP
Retailer 9£935 GBP
Retailer 6£1,467 GBP
Retailer 4£1,644 GBP
MOH London£2,420 GBP

22 data points across 12 retailers

12 retailers£496 GBP to £2,420 GBP

A
Cheapest Retailer
-
£496 GBP
A
Retailer 2
-
£539 GBP
View
B+
Retailer 3
-
£554 GBP
View
Final sale: no returns
B+
Retailer 4
-
£574 GBP
View
Retailer 5
-
£574 GBP
View
Price last confirmed 21 days ago
B+
Retailer 6
-
£602 GBP
View
B+
Retailer 7
-
£655 GBP
View
B+
Retailer 8
-
£706 GBP
View
B
Retailer 9
-
£935 GBP
View
B
Retailer 10
-
£1,467 GBP
View
B
Retailer 11
-
£1,615 GBP
View
Most Expensive
B
MOH London
LG400942943 · Nov 3
£2,420 GBP
View
11 more retailers have this diamond
Prices start from £496 GBPSave up to £1,925 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
1.41ct Round
£496 GBP