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Cushion|Lab Grown|IGI

4.13ct E SI1 Cushion Lab Grown Diamond

FR • E/SI1 • IGI LG619453241

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG619453241

Diamond specifications and retailer prices

From £335 GBP
$449 USD
As of October 31, 2026
Save £4,270 GBP (93%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £4,605 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.13ct lab-grown cushion diamond

This 4.13ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG619453241 or 619453241. Listed at 14 retailers as of October 29, 2026, with prices from £335 to £4,605, a £4,270 spread on the same certified stone. Brilliant Earth lists it at £4,605. 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

4.13
Carat
E
Colour
SI1
Clarity
Fair
Cut

Specifications

CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle45.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG619453241
Dimensions9.66 × 9.26 × 5.66 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.66 mm9.26 mm4.13 ctE / SI1
OriginLab Grown
CutFair
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG619453241
Side View
Table 62.0%Crown 36.2°Girdle: MED-STKPavilion 45.8°Culet: LargeDepth 61.1%

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 31
Current: £4,605 GBP|Low: £335 GBP|High: £4,747 GBP|Avg: £1,153 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 4£335 GBP
Retailer 12£372 GBP
Retailer 7£481 GBP
Retailer 2£611 GBP
Retailer 11£623 GBP
Retailer 6£677 GBP
Retailer 13£846 GBP
Retailer 8£935 GBP
Retailer 10£1,085 GBP
Retailer 5£1,223 GBP
Retailer 3£1,308 GBP
Retailer 9£1,456 GBP
Brilliant Earth£4,605 GBP

42 data points across 13 retailers

14 retailers£335 GBP to £4,605 GBP

B+
Cheapest Retailer
-
£335 GBP
$449 USD
Final sale: no returns
B+
Retailer 2
-
£372 GBP
$499 USD
View
B+
Retailer 3
-
£481 GBP
$645 USD
View
B+
Retailer 4
-
£611 GBP
View
B
Retailer 5
-
£623 GBP
$835 USD
View
B+
Retailer 6
-
£677 GBP
€864 EUR
View
B+
Retailer 7
-
£846 GBP
$1,133 USD
View
B+
Retailer 8
-
£935 GBP
A$1,928 AUD
View
B+
Retailer 9
-
£1,085 GBP
$1,454 USD
View
B
Retailer 10
-
£1,223 GBP
$1,638 USD
View
B
Retailer 11
-
£1,308 GBP
$1,753 USD
View
B
Retailer 12
-
£1,456 GBP
View
C
Retailer 13
-
£4,605 GBP
$6,170 USD
View
Most Expensive
C
Brilliant Earth
12388835A · Oct 29
£4,605 GBP
$6,170 USD
View
13 more retailers have this diamond
Prices start from £335 GBPSave up to £4,270 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+
4.13ct Cushion
£335 GBP