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Cushion|Lab Grown|IGI

1.81ct D SI2 Cushion Lab Grown Diamond

ID • D/SI2 • IGI LG719519152

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG719519152

Diamond specifications and retailer prices

From $428 NZD
As of November 7, 2026
Save $2,233 NZD (84%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,660 NZD at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG719519152 or 719519152. Listed at 12 retailers as of November 5, 2026, with prices from $428 to $2,660, a $2,233 spread on the same certified stone. Diamond Quarter lists it at $2,660. 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
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle28.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG719519152
Dimensions6.71 × 6.54 × 4.40 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.71 mm6.54 mm1.81 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG719519152
Side View
Table 66.0%Crown 36.7°Girdle: MED-VTKPavilion 28.3°Culet: NoneDepth 67.3%

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 7
Current: $428 NZD|Low: $386 NZD|High: $3,644 NZD|Avg: $1,208 NZD|-3.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 1$428 NZD
Retailer 11$429 NZD
Retailer 3$581 NZD
Retailer 6$714 NZD
Retailer 5$774 NZD
Retailer 2$1,050 NZD
Retailer 10$1,052 NZD
Retailer 7$1,117 NZD
Retailer 4$1,997 NZD
Retailer 9$2,093 NZD
Retailer 8$2,543 NZD

44 data points across 11 retailers

12 retailers$428 NZD to $2,660 NZD

A
Cheapest Retailer
-
$428 NZD
Final sale: no returns
A
Retailer 2
-
$429 NZD
View
B+
Retailer 3
-
$581 NZD
View
A
Retailer 4
-
$714 NZD
View
A
Retailer 5
-
$774 NZD
View
A
Retailer 6
-
$1,050 NZD
View
A
Retailer 7
-
$1,052 NZD
View
B+
Retailer 8
-
$1,117 NZD
View
B+
Retailer 9
-
$1,997 NZD
View
B
Retailer 10
-
$2,093 NZD
View
B
Retailer 11
-
$2,543 NZD
View
Most Expensive
B
Diamond Quarter
1.81SI2DLG595B42N · Nov 5
$2,660 NZD
£1,161 GBP
View
11 more retailers have this diamond
Prices start from $428 NZDSave up to $2,233 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
$428 NZD