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Round|Lab Grown|IGI

1.31ct J SI2 Round Lab Grown Diamond

ID • J/SI2 • IGI LG407930537

Shape and cutting style on the report: Round brilliant

Certificate IGI LG407930537

Diamond specifications and retailer prices

From $813 CAD
As of November 5, 2026
Save $3,550 CAD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,363 CAD at MOH London · As of November 5, 2026
View at MOH London

About this 1.31ct lab-grown round diamond

This 1.31ct 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 LG407930537 or 407930537. Listed at 10 retailers as of November 5, 2026, with prices from $813 to $4,363, a $3,550 spread on the same certified stone. MOH London lists it at $4,363. 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

1.31
Carat
J
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG407930537
Dimensions7.08 × 7.05 × 4.31 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
7.08 mm7.05 mm1.31 ctJ / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG407930537
Side View
Table 55.5%Crown 36°Girdle: MediumPavilion 40.2°Culet: NoneDepth 61.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,363 CAD|Low: $781 CAD|High: $4,429 CAD|Avg: $1,785 CAD|-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$813 CAD
Retailer 10$909 CAD
Retailer 8$911 CAD
Retailer 6$1,008 CAD
Retailer 2$1,033 CAD
Retailer 7$1,552 CAD
Retailer 11$1,614 CAD
Retailer 3$2,107 CAD
Retailer 4$2,501 CAD
Retailer 9$2,651 CAD
MOH London$4,363 CAD

15 data points across 11 retailers

10 retailers$813 CAD to $4,363 CAD

A
Cheapest Retailer
-
$813 CAD
A
Retailer 2
-
$909 CAD
View
Final sale: no returns
A
Retailer 3
-
$911 CAD
View
B+
Retailer 4
-
$1,008 CAD
View
Retailer 5
-
$1,008 CAD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$1,033 CAD
View
B
Retailer 7
-
$1,552 CAD
View
B
Retailer 8
-
$2,501 CAD
View
B
Retailer 9
-
$2,651 CAD
View
Most Expensive
B
MOH London
LG407930537 · Nov 5
$4,363 CAD
£2,460 GBP
View
9 more retailers have this diamond
Prices start from $813 CADSave up to $3,550 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
1.31ct Round
$813 CAD