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Round|Lab Grown|IGI

1.40ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG451055673

Shape and cutting style on the report: Round brilliant

Certificate IGI LG451055673

Diamond specifications and retailer prices

From $925 CAD
As of November 5, 2026
Save $3,581 CAD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,505 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 1.4ct lab-grown round diamond

This 1.4ct 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 LG451055673 or 451055673. Listed at 11 retailers as of November 5, 2026, with prices from $925 to $4,505, a $3,581 spread on the same certified stone. MOH London lists it at $4,505. 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

1.40
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG451055673
Dimensions7.26 × 7.21 × 4.36 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
7.26 mm7.21 mm1.40 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG451055673
Side View
Table 58.5%Crown 35.3°Girdle: THN-MEDPavilion 40.3°Culet: NoneDepth 60.2%

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: $4,505 CAD|Low: $925 CAD|High: $4,573 CAD|Avg: $1,895 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 4$925 CAD
Retailer 8$1,035 CAD
Retailer 6$1,073 CAD
Retailer 2$1,320 CAD
Retailer 5$1,383 CAD
Retailer 9$1,737 CAD
Retailer 7$1,750 CAD
Retailer 3$2,740 CAD
MOH London$4,505 CAD

17 data points across 9 retailers

11 retailers$925 CAD to $4,505 CAD

A
Cheapest Retailer
-
$925 CAD
A
Retailer 2
-
$1,006 CAD
View
B+
Retailer 3
-
$1,035 CAD
View
Final sale: no returns
Retailer 4
-
$1,073 CAD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$1,073 CAD
View
B+
Retailer 6
-
$1,320 CAD
View
B
Retailer 7
-
$1,383 CAD
View
B
Retailer 8
-
$1,750 CAD
View
B
Retailer 9
-
$2,740 CAD
View
B
Retailer 10
-
$3,015 CAD
View
Most Expensive
B
MOH London
LG451055673 · Nov 5
$4,505 CAD
£2,540 GBP
View
10 more retailers have this diamond
Prices start from $925 CADSave up to $3,581 CAD

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
1.40ct Round
$925 CAD