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Round|Lab Grown|IGI

1.31ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG436056961

Shape and cutting style on the report: Round brilliant

Certificate IGI LG436056961

Diamond specifications and retailer prices

From $468 SGD
£288 GBP
As of October 30, 2026
Save $203 SGD (30%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,250 SGD at MOH London · As of October 15, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436056961 or 436056961. Listed at 4 retailers as of October 29, 2026, with a 43% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436056961
Dimensions7.05 × 7.09 × 4.28 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post growth treatment. This Laboratory Grown Diamond was created by high pressure high temperature process (HPHT).
Top View
7.05 mm7.09 mm1.31 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436056961
Side View
Table 57.5%Crown 33.6°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $1,250 SGD|Low: $359 SGD|High: $1,252 SGD|Avg: $693 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
October 30, 2026
Retailer 2$468 SGD
Retailer 3$476 SGD
Retailer 4$672 SGD
MOH London$1,250 SGD

33 data points across 4 retailers

4 retailers$468 SGD to $672 SGD

A
Cheapest Retailer
-
$468 SGD
£288 GBP
B+
Retailer 2
-
$476 SGD
$371 USD
View
B+
Retailer 3
-
$672 SGD
$524 USD
View
Most Expensive
MOH London
LG436056961 · Oct 15
$1,250 SGD
£768 GBP
View
Price last confirmed 15 days ago
3 more retailers have this diamond
Prices start from $468 SGDSave up to $203 SGD

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
$468 SGD