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Cushion|Lab Grown|IGI

1.09ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG604304627

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG604304627

Diamond specifications and retailer prices

From £202 GBP
As of November 5, 2026
Save £815 GBP (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £1,017 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG604304627 or 604304627. Listed at 8 retailers as of November 5, 2026, with prices from £202 to £1,017, a £815 spread on the same certified stone. MOH London lists it at £1,017. 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

1.09
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30.5°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG604304627
Dimensions7.03 × 5.54 × 3.68 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
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
7.03 mm5.54 mm1.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG604304627
Side View
Table 66.0%Crown 30.5°Girdle: MED-THKPavilion 40.1°Culet: NoneDepth 66.4%

Caratlytics Score

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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 5
Current: £1,017 GBP|Low: £159 GBP|High: £1,030 GBP|Avg: £352 GBP|-0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 6£159 GBP
Retailer 2£202 GBP
Retailer 3£227 GBP
Retailer 8£230 GBP
Retailer 4£232 GBP
Retailer 5£250 GBP
Retailer 7£365 GBP
Retailer 9£448 GBP
MOH London£1,017 GBP

35 data points across 9 retailers

8 retailers£202 GBP to £1,017 GBP

A
Cheapest Retailer
-
£202 GBP
A
Retailer 2
-
£227 GBP
View
B+
Retailer 3
-
£230 GBP
View
A
Retailer 4
-
£232 GBP
View
A
Retailer 5
-
£250 GBP
View
B+
Retailer 6
-
£365 GBP
View
B
Retailer 7
-
£448 GBP
View
Most Expensive
B
MOH London
LG604304627 · Nov 5
£1,017 GBP
View
7 more retailers have this diamond
Prices start from £202 GBPSave up to £815 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
1.09ct Cushion
£202 GBP