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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 $477 USD
£375 GBP
As of October 29, 2026
Save $1,015 USD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,492 USD 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 $477 to $1,492, a $1,015 spread on the same certified stone. MOH London lists it at $1,492. 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
Color
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 29
Current: $1,492 USD|Low: $474 USD|High: $1,502 USD|Avg: $805 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 29, 2026
Retailer 2$477 USD
Retailer 7$486 USD
Retailer 8$488 USD
Retailer 4$606 USD
Retailer 6$634 USD
Retailer 9$668 USD
Retailer 3$995 USD
Retailer 5$1,390 USD
MOH London$1,492 USD

33 data points across 9 retailers

8 retailers$477 USD to $1,492 USD

A
Cheapest Retailer
-
$477 USD
£375 GBP
Retailer 2
-
$486 USD
HK$3,800 HKD
View
Price last confirmed 24 days ago
A
Retailer 3
-
$488 USD
View
B+
Retailer 4
-
$606 USD
View
B+
Retailer 5
-
$634 USD
View
Retailer 6
-
$995 USD
View
Price last confirmed 8 days ago
Retailer 7
-
$1,390 USD
SGD 1,878 SGD
View
Price last confirmed 22 days ago
Most Expensive
B
MOH London
LG494175221 · Oct 29
$1,492 USD
£1,175 GBP
View
7 more retailers have this diamond
Prices start from $477 USDSave up to $1,015 USD

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
$477 USD