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Cushion|Lab Grown|IGI

5.41ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG594342964

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG594342964

Diamond specifications and retailer prices

From £531 GBP
As of November 1, 2026
Save £1,921 GBP (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £2,452 GBP at Rare Carat · As of November 1, 2026
View at Rare Carat

About this 5.41ct lab-grown cushion diamond

This 5.41ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG594342964 or 594342964. Listed at 10 retailers as of November 1, 2026, with prices from £531 to £2,452, a £1,921 spread on the same certified stone. Rare Carat lists it at £2,452. 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

5.41
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG594342964
Dimensions11.62 × 9.60 × 6.43 mm
L/W Ratio1.21
Girdle conditionFaceted
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
11.62 mm9.60 mm5.41 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG594342964
Side View
Table 63.0%Crown 33.5°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £791 GBP|Low: £531 GBP|High: £6,441 GBP|Avg: £1,928 GBP|+0.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6£531 GBP
Retailer 10£564 GBP
Retailer 8£608 GBP
Retailer 7£774 GBP
Retailer 12£784 GBP
Retailer 1£791 GBP
Retailer 9£793 GBP
Retailer 11£1,090 GBP
Retailer 5£2,117 GBP
Retailer 3£3,288 GBP
Retailer 2£4,724 GBP
Retailer 4£6,441 GBP

6 data points across 12 retailers

10 retailers£531 GBP to £2,452 GBP

A
Cheapest Retailer
-
£531 GBP
A
Retailer 2
-
£564 GBP
HK$5,900 HKD
View
A
Retailer 3
-
£608 GBP
$815 USD
View
A
Retailer 4
-
£774 GBP
€988 EUR
View
B+
Retailer 5
-
£784 GBP
$1,051 USD
View
A
Retailer 6
-
£791 GBP
View
A
Retailer 7
-
£793 GBP
$1,063 USD
View
B+
Retailer 8
-
£1,090 GBP
$1,461 USD
View
B
Retailer 9
-
£2,117 GBP
View
Most Expensive
B
Rare Carat
KI9643429KF594 · Nov 1
£2,452 GBP
$3,285 USD
View
9 more retailers have this diamond
Prices start from £531 GBPSave up to £1,921 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
5.41ct Cushion
£531 GBP