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Cushion|Lab Grown|IGI

1.63ct E SI2 Cushion Lab Grown Diamond

EX • E/SI2 • IGI LG494175221

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG494175221

Diamond specifications and retailer prices

From $844 NZD
£374 GBP
As of October 30, 2026
Save $1,804 NZD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,648 NZD at MOH London · As of October 29, 2026
View at MOH London

About this 1.63ct lab-grown cushion diamond

This 1.63ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494175221 or 494175221. Listed at 8 retailers as of October 29, 2026, with prices from $844 to $2,648, a $1,804 spread on the same certified stone. MOH London lists it at $2,648. 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

1.63
Carat
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle35.4°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494175221
Dimensions6.80 × 6.47 × 4.74 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.80 mm6.47 mm1.63 ctE / SI2
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG494175221
Side View
Table 59.0%Crown 35.4°Girdle: STK-VTKPavilion 40.1°Culet: NoneDepth 73.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: $2,648 NZD|Low: $841 NZD|High: $2,666 NZD|Avg: $1,428 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2$844 NZD
Retailer 7$863 NZD
Retailer 8$866 NZD
Retailer 4$1,075 NZD
Retailer 6$1,125 NZD
Retailer 9$1,186 NZD
Retailer 3$1,765 NZD
Retailer 5$2,466 NZD
MOH London$2,648 NZD

34 data points across 9 retailers

8 retailers$844 NZD to $2,648 NZD

A
Cheapest Retailer
-
$844 NZD
£374 GBP
Retailer 2
-
$863 NZD
HK$3,800 HKD
View
Price last confirmed 24 days ago
A
Retailer 3
-
$866 NZD
$488 USD
View
B+
Retailer 4
-
$1,075 NZD
$606 USD
View
B+
Retailer 5
-
$1,125 NZD
$634 USD
View
Retailer 6
-
$1,765 NZD
$995 USD
View
Price last confirmed 9 days ago
Retailer 7
-
$2,466 NZD
SGD 1,878 SGD
View
Price last confirmed 23 days ago
Most Expensive
B
MOH London
LG494175221 · Oct 29
$2,648 NZD
£1,175 GBP
View
7 more retailers have this diamond
Prices start from $844 NZDSave up to $1,804 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
1.63ct Cushion
$844 NZD