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Cushion|Lab Grown|IGI

4.01ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG821643513

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG821643513

Diamond specifications and retailer prices

From £1,036 GBP
$1,388 USD
As of October 30, 2026
Save £3,681 GBP (78%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £4,717 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.01ct lab-grown cushion diamond

This 4.01ct 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 LG821643513 or 821643513. Listed at 4 retailers as of October 30, 2026, with prices from £1,036 to £4,717, a £3,681 spread on the same certified stone. Do Amore Diamonds lists it at £4,717. 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

4.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.2°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821643513
Dimensions11.51 × 8.07 × 5.00 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.51 mm8.07 mm4.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821643513
Side View
Table 60.0%Crown 39.2°Girdle: STK-THKPavilion 37.5°Culet: LargeDepth 62.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £4,717 GBP|Low: £772 GBP|High: £4,896 GBP|Avg: £2,725 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
October 28, 2026
Retailer 4£1,036 GBP
Retailer 2£1,037 GBP
Retailer 3£2,648 GBP
Do Amore Diamonds£4,717 GBP

14 data points across 4 retailers

4 retailers£1,036 GBP to £4,717 GBP

B+
Cheapest Retailer
-
£1,036 GBP
$1,388 USD
B+
Retailer 2
-
£1,037 GBP
$1,390 USD
View
B
Retailer 3
-
£2,648 GBP
View
Most Expensive
B
Do Amore Diamonds
7-1786122 · Oct 31
£4,717 GBP
$6,320 USD
View
3 more retailers have this diamond
Prices start from £1,036 GBPSave up to £3,681 GBP

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.

B+
4.01ct Cushion
£1,036 GBP