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Cushion|Lab Grown|IGI

4.02ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG846639568

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846639568

Diamond specifications and retailer prices

From $941 NZD
£417 GBP
As of November 2, 2026
Save $3,616 NZD (79%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $4,557 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 4.02ct lab-grown cushion diamond

This 4.02ct 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 LG846639568 or 846639568. Listed at 7 retailers as of November 1, 2026, with prices from $941 to $4,557, a $3,616 spread on the same certified stone. MOH London lists it at $4,557. 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

4.02
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846639568
Dimensions11.23 × 8.08 × 5.36 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.23 mm8.08 mm4.02 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846639568
Side View
Table 62.0%Crown 31.6°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
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 2
Current: $4,557 NZD|Low: $941 NZD|High: $4,580 NZD|Avg: $2,087 NZD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 2$941 NZD
Retailer 5$985 NZD
Retailer 4$1,342 NZD
Retailer 7$1,697 NZD
Retailer 3$1,815 NZD
Retailer 6$2,040 NZD
MOH London$4,557 NZD

8 data points across 7 retailers

7 retailers$941 NZD to $4,557 NZD

A
Cheapest Retailer
-
$941 NZD
£417 GBP
A
Retailer 2
-
$985 NZD
$554 USD
View
Final sale: no returns
A
Retailer 3
-
$1,342 NZD
$755 USD
View
B+
Retailer 4
-
$1,697 NZD
$955 USD
View
A
Retailer 5
-
$1,815 NZD
£804 GBP
View
A
Retailer 6
-
$2,040 NZD
$1,148 USD
View
Most Expensive
B
MOH London
LG846639568 · Nov 1
$4,557 NZD
£2,019 GBP
View
6 more retailers have this diamond
Prices start from $941 NZDSave up to $3,616 NZD

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
4.02ct Cushion
$941 NZD