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Cushion|Lab Grown|IGI

1.63ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG494183935

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG494183935

Diamond specifications and retailer prices

From $314 CAD
$224 USD
As of October 28, 2026
Save $1,744 CAD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,057 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG494183935 or 494183935. Listed at 13 retailers as of October 28, 2026, with prices from $314 to $2,057, a $1,744 spread on the same certified stone. Brilliant Earth lists it at $2,057. 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
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG494183935
Dimensions6.72 × 6.52 × 4.41 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Top View
6.72 mm6.52 mm1.63 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG494183935
Side View
Table 59.0%Crown 32.1°Girdle: THN-STKPavilion 34.9°Culet: NoneDepth 67.6%

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: Oct 28
Current: $2,057 CAD|Low: $184 CAD|High: $2,197 CAD|Avg: $956 CAD|-6.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 5$184 CAD
Retailer 13$314 CAD
Retailer 11$347 CAD
Retailer 7$469 CAD
Retailer 2$572 CAD
Retailer 14$703 CAD
Retailer 3$782 CAD
Retailer 12$819 CAD
Retailer 10$889 CAD
Retailer 6$1,192 CAD
Retailer 9$1,463 CAD
Retailer 8$1,628 CAD
Retailer 4$1,672 CAD
Brilliant Earth$2,057 CAD

26 data points across 14 retailers

13 retailers$314 CAD to $2,057 CAD

A
Cheapest Retailer
-
$314 CAD
$224 USD
Final sale: no returns
A
Retailer 2
-
$347 CAD
$248 USD
View
B+
Retailer 3
-
$469 CAD
$335 USD
View
A
Retailer 4
-
$572 CAD
€389 EUR
View
A
Retailer 5
-
$703 CAD
$502 USD
View
A
Retailer 6
-
$782 CAD
$559 USD
View
A
Retailer 7
-
$819 CAD
$585 USD
View
B+
Retailer 8
-
$889 CAD
$635 USD
View
B+
Retailer 9
-
$1,192 CAD
$852 USD
View
Retailer 10
-
$1,463 CAD
$1,045 USD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$1,628 CAD
£916 GBP
View
B
Retailer 12
-
$1,672 CAD
$1,195 USD
View
Most Expensive
B
Brilliant Earth
9518221A · Oct 29
$2,057 CAD
$1,470 USD
View
12 more retailers have this diamond
Prices start from $314 CADSave up to $1,744 CAD

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
$314 CAD