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Round|Lab Grown|IGI

1.41ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG500151240

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500151240

Diamond specifications and retailer prices

From £464 GBP
As of November 5, 2026
Save £1,795 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,259 GBP at MOH London · As of November 5, 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 LG500151240 or 500151240. Listed at 12 retailers as of November 5, 2026, with prices from £464 to £2,259, a £1,795 spread on the same certified stone. MOH London lists it at £2,259. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500151240
Dimensions7.18 × 7.16 × 4.47 mm
L/W Ratio1.00
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
7.18 mm7.16 mm1.41 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500151240
Side View
Table 54.0%Crown 35.5°GirdlePavilion 40.2°Culet: NoneDepth 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 5
Current: £2,259 GBP|Low: £371 GBP|High: £2,289 GBP|Avg: £900 GBP|-0.3%
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 5£464 GBP
Retailer 10£519 GBP
Retailer 7£575 GBP
Retailer 9£575 GBP
Retailer 11£644 GBP
Retailer 2£669 GBP
Retailer 6£743 GBP
Retailer 8£880 GBP
Retailer 3£909 GBP
Retailer 4£1,374 GBP
MOH London£2,259 GBP

20 data points across 11 retailers

12 retailers£464 GBP to £2,259 GBP

A
Cheapest Retailer
-
£464 GBP
A
Retailer 2
-
£519 GBP
View
Final sale: no returns
A
Retailer 3
-
£519 GBP
View
Retailer 4
-
£575 GBP
View
Price last confirmed 21 days ago
B+
Retailer 5
-
£575 GBP
View
B+
Retailer 6
-
£644 GBP
View
B+
Retailer 7
-
£669 GBP
View
B
Retailer 8
-
£743 GBP
View
B
Retailer 9
-
£880 GBP
View
B
Retailer 10
-
£1,374 GBP
View
B
Retailer 11
-
£1,512 GBP
View
Most Expensive
B
MOH London
LG500151240 · Nov 5
£2,259 GBP
View
11 more retailers have this diamond
Prices start from £464 GBPSave up to £1,795 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
£464 GBP