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Round|Lab Grown|IGI

1.31ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG496135573

Shape and cutting style on the report: Round brilliant

Certificate IGI LG496135573

Diamond specifications and retailer prices

From $944 AUD
As of November 5, 2026
Save $3,669 AUD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,613 AUD at MOH London · As of November 3, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG496135573 or 496135573. Listed at 10 retailers as of November 3, 2026, with prices from $944 to $4,613, a $3,669 spread on the same certified stone. MOH London lists it at $4,613. 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
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496135573
Dimensions7.07 × 7.12 × 4.30 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
7.07 mm7.12 mm1.31 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496135573
Side View
Table 56.0%Crown 33°Girdle: THN-MEDPavilion 40.7°Culet: NoneDepth 60.5%

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: $4,613 AUD|Low: $906 AUD|High: $4,668 AUD|Avg: $1,907 AUD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 4$944 AUD
Retailer 7$1,056 AUD
Retailer 2$1,086 AUD
Retailer 5$1,096 AUD
Retailer 8$1,096 AUD
Retailer 9$1,770 AUD
Retailer 6$1,787 AUD
Retailer 10$2,450 AUD
Retailer 3$2,797 AUD
MOH London$4,613 AUD

13 data points across 10 retailers

10 retailers$944 AUD to $4,613 AUD

A
Cheapest Retailer
-
$944 AUD
A
Retailer 2
-
$1,027 AUD
View
A
Retailer 3
-
$1,056 AUD
View
Final sale: no returns
A
Retailer 4
-
$1,086 AUD
View
A
Retailer 5
-
$1,096 AUD
View
Retailer 6
-
$1,096 AUD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$1,787 AUD
View
B
Retailer 8
-
$2,797 AUD
View
B
Retailer 9
-
$3,078 AUD
View
Most Expensive
B
MOH London
LG496135573 · Nov 3
$4,613 AUD
£2,543 GBP
View
9 more retailers have this diamond
Prices start from $944 AUDSave up to $3,669 AUD

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
$944 AUD