CaratHunter
Plans
Cushion|Lab Grown|IGI

4.05ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1 • IGI LG823613807

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG823613807

Diamond specifications and retailer prices

From $672 CAD
£379 GBP
As of November 1, 2026
Save $2,189 CAD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,862 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG823613807 or 823613807. Listed at 10 retailers as of November 1, 2026, with prices from $672 to $2,862, a $2,189 spread on the same certified stone. MOH London lists it at $2,862. 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

4.05
Carat
F
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823613807
Dimensions10.04 × 9.05 × 5.70 mm
L/W Ratio1.11
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.04 mm9.05 mm4.05 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823613807
Side View
Table 64.0%Crown 34.2°Girdle: MED-THKPavilion 37.9°Culet: NoneDepth 63.0%

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 1
Current: $2,862 CAD|Low: $597 CAD|High: $2,929 CAD|Avg: $1,507 CAD|+4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2$672 CAD
Retailer 8$703 CAD
Retailer 9$779 CAD
Retailer 4$978 CAD
Retailer 10$1,045 CAD
Retailer 3$1,278 CAD
Retailer 7$1,602 CAD
Retailer 5$2,550 CAD
Retailer 6$2,652 CAD
MOH London$2,862 CAD

30 data points across 10 retailers

10 retailers$672 CAD to $2,862 CAD

A
Cheapest Retailer
-
$672 CAD
£379 GBP
A
Retailer 2
-
$703 CAD
$503 USD
View
Final sale: no returns
Retailer 3
-
$779 CAD
$558 USD
View
Price last confirmed 16 days ago
A
Retailer 4
-
$978 CAD
$700 USD
View
B+
Retailer 5
-
$1,045 CAD
$748 USD
View
A
Retailer 6
-
$1,278 CAD
£721 GBP
View
A
Retailer 7
-
$1,602 CAD
$1,147 USD
View
B+
Retailer 8
-
$2,550 CAD
$1,825 USD
View
B
Retailer 9
-
$2,652 CAD
$1,898 USD
View
Most Expensive
B
MOH London
LG823613807 · Nov 1
$2,862 CAD
£1,613 GBP
View
9 more retailers have this diamond
Prices start from $672 CADSave up to $2,189 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
4.05ct Cushion
$672 CAD