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Cushion|Lab Grown|IGI

1.64ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG611385678

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG611385678

Diamond specifications and retailer prices

From $332 CAD
$237 USD
As of October 28, 2026
Save $2,481 CAD (88%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $2,813 CAD at Do Amore Diamonds · As of October 27, 2026
View at Do Amore Diamonds

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 E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG611385678 or 611385678. Listed at 7 retailers as of October 27, 2026, with prices from $332 to $2,813, a $2,481 spread on the same certified stone. Do Amore Diamonds lists it at $2,813. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.64
Carat
E
Color
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG611385678
Dimensions6.90 × 6.85 × 4.54 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.90 mm6.85 mm1.64 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG611385678
Side View
Table 61.0%Crown 34.8°Girdle: MED-STKPavilion 39.9°Culet: NoneDepth 66.3%

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: $2,813 CAD|Low: $210 CAD|High: $2,841 CAD|Avg: $1,172 CAD|+6.9%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 27, 2026
Retailer 7$332 CAD
Retailer 2$515 CAD
Retailer 5$624 CAD
Retailer 10$652 CAD
Retailer 8$767 CAD
Retailer 11$782 CAD
Retailer 3$1,017 CAD
Retailer 4$1,609 CAD
Retailer 6$1,791 CAD
Retailer 9$2,015 CAD
Do Amore Diamonds$2,813 CAD

30 data points across 11 retailers

7 retailers$332 CAD to $2,813 CAD

A
Cheapest Retailer
-
$332 CAD
$237 USD
Final sale: no returns
A
Retailer 2
-
$515 CAD
£290 GBP
View
B
Retailer 3
-
$624 CAD
$446 USD
View
B
Retailer 4
-
$1,609 CAD
£905 GBP
View
B
Retailer 5
-
$1,791 CAD
$1,280 USD
View
B
Retailer 6
-
$2,015 CAD
$1,440 USD
View
Most Expensive
C
Do Amore Diamonds
27-974BF901B · Oct 27
$2,813 CAD
$2,010 USD
View
6 more retailers have this diamond
Prices start from $332 CADSave up to $2,481 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
$332 CAD