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Cushion|Lab Grown|IGI

4.08ct F SI1 Cushion Lab Grown Diamond

VG • F/SI1 • IGI LG830689146

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG830689146

Diamond specifications and retailer prices

From $1,488 CAD
$1,065 USD
As of November 2, 2026
Save $3,171 CAD (68%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,659 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 4.08ct lab-grown cushion diamond

This 4.08ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG830689146 or 830689146. Listed at 8 retailers as of November 1, 2026, with prices from $1,488 to $4,659, a $3,171 spread on the same certified stone. MOH London lists it at $4,659. 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

4.08
Carat
F
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.6°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG830689146
Dimensions11.91 × 8.45 × 5.51 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.91 mm8.45 mm4.08 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG830689146
Side View
Table 53.0%Crown 40.6°Girdle: MED-STKPavilion 36.3°Culet: LargeDepth 65.2%

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: Nov 2
Current: $4,659 CAD|Low: $1,243 CAD|High: $4,721 CAD|Avg: $2,793 CAD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 4$1,243 CAD
Retailer 3$1,488 CAD
Retailer 8$1,773 CAD
Retailer 2$1,905 CAD
Retailer 5$2,010 CAD
Retailer 6$4,183 CAD
Retailer 7$4,291 CAD
MOH London$4,659 CAD

41 data points across 8 retailers

8 retailers$1,488 CAD to $4,659 CAD

Retailer 1
-
$1,243 CAD
$890 USD
Price last confirmed 20 days ago
A
Retailer 2
-
$1,488 CAD
$1,065 USD
View
B+
Retailer 3
-
$1,773 CAD
$1,269 USD
View
B+
Retailer 4
-
$1,905 CAD
£1,074 GBP
View
B+
Retailer 5
-
$2,010 CAD
$1,439 USD
View
B
Retailer 6
-
$4,183 CAD
SGD 4,047 SGD
View
B
Retailer 7
-
$4,291 CAD
$3,072 USD
View
Most Expensive
B
MOH London
LG830689146 · Nov 1
$4,659 CAD
£2,626 GBP
View
7 more retailers have this diamond
Prices start from $1,488 CADSave up to $3,171 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
4.08ct Cushion
$1,488 CAD