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Cushion|Lab Grown|IGI

4.06ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG602366583

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG602366583

Diamond specifications and retailer prices

From £510 GBP
$685 USD
As of November 2, 2026
Save £1,844 GBP (78%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £2,355 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.06ct lab-grown cushion diamond

This 4.06ct 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 LG602366583 or 602366583. Listed at 8 retailers as of November 2, 2026, with prices from £510 to £2,355, a £1,844 spread on the same certified stone. Brilliant Earth lists it at £2,355. 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

4.06
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle29°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG602366583
Dimensions10.72 × 8.59 × 5.75 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Top View
10.72 mm8.59 mm4.06 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG602366583
Side View
Table 66.0%Crown 29°Girdle: MED-THKPavilion 39.3°Culet: NoneDepth 66.9%

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: £2,355 GBP|Low: £351 GBP|High: £4,449 GBP|Avg: £1,047 GBP|-47.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 7£351 GBP
Retailer 10£405 GBP
Retailer 5£510 GBP
Retailer 9£637 GBP
Retailer 4£657 GBP
Retailer 2£663 GBP
Retailer 8£715 GBP
Retailer 6£855 GBP
Retailer 3£1,488 GBP
Brilliant Earth£2,355 GBP

35 data points across 10 retailers

8 retailers£510 GBP to £2,355 GBP

A
Cheapest Retailer
-
£510 GBP
$685 USD
B+
Retailer 2
-
£637 GBP
$855 USD
View
A
Retailer 3
-
£657 GBP
€840 EUR
View
A
Retailer 4
-
£663 GBP
View
A
Retailer 5
-
£715 GBP
$959 USD
View
A
Retailer 6
-
£855 GBP
$1,148 USD
View
B+
Retailer 7
-
£1,488 GBP
View
Most Expensive
B
Brilliant Earth
8386158A · Nov 2
£2,355 GBP
$3,160 USD
View
7 more retailers have this diamond
Prices start from £510 GBPSave up to £1,844 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.

A
4.06ct Cushion
£510 GBP