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Cushion|Lab Grown|IGI

1.64ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG526288476

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG526288476

Diamond specifications and retailer prices

From $315 CAD
$225 USD
As of October 30, 2026
Save $1,756 CAD (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,071 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.64ct lab-grown cushion diamond

This 1.64ct 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 LG526288476 or 526288476. Listed at 13 retailers as of October 29, 2026, with prices from $315 to $2,071, a $1,756 spread on the same certified stone. Brilliant Earth lists it at $2,071. 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

1.64
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle29.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526288476
Dimensions7.64 × 6.14 × 4.03 mm
L/W Ratio1.24
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
7.64 mm6.14 mm1.64 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526288476
Side View
Table 61.5%Crown 34.9°Girdle: MED-STKPavilion 29.2°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
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: $2,071 CAD|Low: $315 CAD|High: $2,197 CAD|Avg: $952 CAD|-5.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 9$315 CAD
Retailer 5$473 CAD
Retailer 3$576 CAD
Retailer 2$641 CAD
Retailer 10$707 CAD
Retailer 8$820 CAD
Retailer 7$894 CAD
Retailer 6$1,463 CAD
Retailer 4$1,642 CAD
Brilliant Earth$2,071 CAD

44 data points across 10 retailers

13 retailers$315 CAD to $2,071 CAD

A
Cheapest Retailer
-
$315 CAD
$225 USD
Final sale: no returns
B+
Retailer 2
-
$473 CAD
$338 USD
View
A
Retailer 3
-
$576 CAD
€392 EUR
View
A
Retailer 4
-
$641 CAD
£361 GBP
View
A
Retailer 5
-
$707 CAD
$505 USD
View
A
Retailer 6
-
$792 CAD
$566 USD
View
A
Retailer 7
-
$820 CAD
$586 USD
View
B+
Retailer 8
-
$894 CAD
$639 USD
View
B+
Retailer 9
-
$1,198 CAD
$856 USD
View
Retailer 10
-
$1,463 CAD
$1,045 USD
View
Price last confirmed 8 days ago
B
Retailer 11
-
$1,642 CAD
£924 GBP
View
B
Retailer 12
-
$1,677 CAD
$1,198 USD
View
Most Expensive
B
Brilliant Earth
10788641A · Oct 29
$2,071 CAD
$1,480 USD
View
12 more retailers have this diamond
Prices start from $315 CADSave up to $1,756 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
1.64ct Cushion
$315 CAD