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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 $615 SGD
£379 GBP
As of November 1, 2026
Save $2,004 SGD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,620 SGD 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 $615 to $2,620, a $2,004 spread on the same certified stone. MOH London lists it at $2,620. 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
Colour
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

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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: Nov 1
Current: $2,620 SGD|Low: $546 SGD|High: $2,682 SGD|Avg: $1,379 SGD|+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$615 SGD
Retailer 8$643 SGD
Retailer 9$714 SGD
Retailer 4$895 SGD
Retailer 10$957 SGD
Retailer 3$1,170 SGD
Retailer 7$1,467 SGD
Retailer 5$2,334 SGD
Retailer 6$2,428 SGD
MOH London$2,620 SGD

30 data points across 10 retailers

10 retailers$615 SGD to $2,620 SGD

A
Cheapest Retailer
-
$615 SGD
£379 GBP
A
Retailer 2
-
$643 SGD
$503 USD
View
Final sale: no returns
Retailer 3
-
$714 SGD
$558 USD
View
Price last confirmed 17 days ago
A
Retailer 4
-
$895 SGD
$700 USD
View
B+
Retailer 5
-
$957 SGD
$748 USD
View
A
Retailer 6
-
$1,170 SGD
£721 GBP
View
A
Retailer 7
-
$1,467 SGD
$1,147 USD
View
B+
Retailer 8
-
$2,334 SGD
$1,825 USD
View
B
Retailer 9
-
$2,428 SGD
$1,898 USD
View
Most Expensive
B
MOH London
LG823613807 · Nov 1
$2,620 SGD
£1,613 GBP
View
9 more retailers have this diamond
Prices start from $615 SGDSave up to $2,004 SGD

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
$615 SGD