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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 $1,176 NZD
As of November 5, 2026
Save $4,569 NZD (80%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,745 NZD 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 $1,176 to $5,745, a $4,569 spread on the same certified stone. MOH London lists it at $5,745. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $5,745 NZD|Low: $1,128 NZD|High: $5,813 NZD|Avg: $2,375 NZD|-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$1,176 NZD
Retailer 7$1,315 NZD
Retailer 2$1,352 NZD
Retailer 5$1,364 NZD
Retailer 8$1,364 NZD
Retailer 9$2,204 NZD
Retailer 6$2,225 NZD
Retailer 10$3,051 NZD
Retailer 3$3,483 NZD
MOH London$5,745 NZD

13 data points across 10 retailers

10 retailers$1,176 NZD to $5,745 NZD

A
Cheapest Retailer
-
$1,176 NZD
A
Retailer 2
-
$1,279 NZD
View
A
Retailer 3
-
$1,315 NZD
View
Final sale: no returns
A
Retailer 4
-
$1,352 NZD
View
A
Retailer 5
-
$1,364 NZD
View
Retailer 6
-
$1,364 NZD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$2,225 NZD
View
B
Retailer 8
-
$3,483 NZD
View
B
Retailer 9
-
$3,834 NZD
View
Most Expensive
B
MOH London
LG496135573 · Nov 3
$5,745 NZD
£2,543 GBP
View
9 more retailers have this diamond
Prices start from $1,176 NZDSave up to $4,569 NZD

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
$1,176 NZD