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Cushion|Lab Grown|IGI

4.06ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG645465199

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG645465199

Diamond specifications and retailer prices

From $1,502 CAD
$1,075 USD
As of October 30, 2026
Save $6,908 CAD (82%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $8,409 CAD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.06ct lab-grown cushion diamond

This 4.06ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG645465199 or 645465199. Listed at 4 retailers as of October 29, 2026, with prices from $1,502 to $8,409, a $6,908 spread on the same certified stone. Brilliant Earth lists it at $8,409. 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

4.06
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645465199
Dimensions10.26 × 8.22 × 5.79 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.26 mm8.22 mm4.06 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645465199
Side View
Table 64.0%Crown 39.2°Girdle: MED-THKPavilion 37.5°Culet: NoneDepth 70.4%

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 30
Current: $8,409 CAD|Low: $1,502 CAD|High: $9,681 CAD|Avg: $4,596 CAD|-4.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 31, 2026
Retailer 3$1,502 CAD
Retailer 4$1,556 CAD
Retailer 2$1,611 CAD
Retailer 6$4,741 CAD
Brilliant Earth$8,409 CAD
Retailer 5$9,681 CAD

13 data points across 6 retailers

4 retailers$1,502 CAD to $8,409 CAD

A
Cheapest Retailer
-
$1,502 CAD
$1,075 USD
B+
Retailer 2
-
$1,556 CAD
$1,114 USD
View
A
Retailer 3
-
$1,611 CAD
$1,153 USD
View
Most Expensive
B
Brilliant Earth
18831122A · Oct 29
$8,409 CAD
$6,020 USD
View
3 more retailers have this diamond
Prices start from $1,502 CADSave up to $6,908 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
4.06ct Cushion
$1,502 CAD