CaratHunter
Plans
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 $791 NZD
$445 USD
As of November 1, 2026
Save $2,638 NZD (77%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,429 NZD 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 $791 to $3,429, a $2,638 spread on the same certified stone. MOH London lists it at $3,429. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,429 NZD|Low: $773 NZD|High: $3,472 NZD|Avg: $1,500 NZD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 7$791 NZD
Retailer 4$878 NZD
Retailer 2$1,172 NZD
Retailer 3$1,324 NZD
Retailer 6$1,331 NZD
Retailer 5$1,393 NZD
MOH London$3,429 NZD

40 data points across 7 retailers

7 retailers$791 NZD to $3,429 NZD

A
Cheapest Retailer
-
$791 NZD
$445 USD
Final sale: no returns
Retailer 2
-
$878 NZD
$494 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$1,172 NZD
£519 GBP
View
A
Retailer 4
-
$1,324 NZD
$745 USD
View
B+
Retailer 5
-
$1,331 NZD
$749 USD
View
B+
Retailer 6
-
$1,393 NZD
$784 USD
View
Most Expensive
B
MOH London
LG436044981 · Nov 1
$3,429 NZD
£1,519 GBP
View
6 more retailers have this diamond
Prices start from $791 NZDSave up to $2,638 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
1.81ct Cushion
$791 NZD