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Cushion|Lab Grown|IGI

1.81ct I SI1 Cushion Lab Grown Diamond

ID • I/SI1 • IGI LG436044981

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG436044981

Diamond specifications and retailer prices

From $569 SGD
$445 USD
As of November 1, 2026
Save $1,897 SGD (77%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,466 SGD at MOH London · As of November 1, 2026
View at MOH London

About this 1.81ct lab-grown cushion diamond

This 1.81ct lab-grown cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436044981 or 436044981. Listed at 7 retailers as of November 1, 2026, with prices from $569 to $2,466, a $1,897 spread on the same certified stone. MOH London lists it at $2,466. 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

1.81
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle41.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436044981
Dimensions7.10 × 6.95 × 4.74 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Top View
7.10 mm6.95 mm1.81 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG436044981
Side View
Table 61.0%Crown 34.2°Girdle: THK-VTKPavilion 41.6°Culet: NoneDepth 68.2%

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 1
Current: $2,466 SGD|Low: $556 SGD|High: $2,497 SGD|Avg: $1,079 SGD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 7$569 SGD
Retailer 4$632 SGD
Retailer 2$843 SGD
Retailer 3$952 SGD
Retailer 6$958 SGD
Retailer 5$1,002 SGD
MOH London$2,466 SGD

40 data points across 7 retailers

7 retailers$569 SGD to $2,466 SGD

A
Cheapest Retailer
-
$569 SGD
$445 USD
Final sale: no returns
Retailer 2
-
$632 SGD
$494 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$843 SGD
£519 GBP
View
A
Retailer 4
-
$952 SGD
$745 USD
View
B+
Retailer 5
-
$958 SGD
$749 USD
View
B+
Retailer 6
-
$1,002 SGD
$784 USD
View
Most Expensive
B
MOH London
LG436044981 · Nov 1
$2,466 SGD
£1,519 GBP
View
6 more retailers have this diamond
Prices start from $569 SGDSave up to $1,897 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
1.81ct Cushion
$569 SGD