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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 $677 AUD
£374 GBP
As of October 30, 2026
Save $1,447 AUD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,124 AUD 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 $677 to $2,124, a $1,447 spread on the same certified stone. MOH London lists it at $2,124. 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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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,124 AUD|Low: $675 AUD|High: $2,139 AUD|Avg: $1,145 AUD|-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$677 AUD
Retailer 7$692 AUD
Retailer 8$695 AUD
Retailer 4$863 AUD
Retailer 6$902 AUD
Retailer 9$951 AUD
Retailer 3$1,416 AUD
Retailer 5$1,978 AUD
MOH London$2,124 AUD

34 data points across 9 retailers

8 retailers$677 AUD to $2,124 AUD

A
Cheapest Retailer
-
$677 AUD
£374 GBP
Retailer 2
-
$692 AUD
HK$3,800 HKD
View
Price last confirmed 24 days ago
A
Retailer 3
-
$695 AUD
$488 USD
View
B+
Retailer 4
-
$863 AUD
$606 USD
View
B+
Retailer 5
-
$902 AUD
$634 USD
View
Retailer 6
-
$1,416 AUD
$995 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,978 AUD
SGD 1,878 SGD
View
Price last confirmed 23 days ago
Most Expensive
B
MOH London
LG494175221 · Oct 29
$2,124 AUD
£1,175 GBP
View
7 more retailers have this diamond
Prices start from $677 AUDSave up to $1,447 AUD

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
$677 AUD