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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 €243 EUR
£215 GBP
As of October 31, 2026
Save €979 EUR (80%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: €1,223 EUR at MOH London · As of October 29, 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 9 retailers as of October 29, 2026, with prices from €243 to €1,223, a €979 spread on the same certified stone. MOH London lists it at €1,223. 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
Color
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: Oct 31
Current: €1,223 EUR|Low: €190 EUR|High: €1,230 EUR|Avg: €416 EUR|+0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 6€190 EUR
Retailer 3€243 EUR
Retailer 2€271 EUR
Retailer 8€275 EUR
Retailer 4€277 EUR
Retailer 5€298 EUR
Retailer 7€435 EUR
Retailer 9€535 EUR
MOH London€1,223 EUR

34 data points across 9 retailers

9 retailers€243 EUR to €1,223 EUR

Retailer 1
-
€190 EUR
£168 GBP
Price last confirmed 16 days ago
A
Retailer 2
-
€243 EUR
£215 GBP
View
A
Retailer 3
-
€271 EUR
View
B+
Retailer 4
-
€275 EUR
$308 USD
View
A
Retailer 5
-
€277 EUR
£244 GBP
View
A
Retailer 6
-
€298 EUR
$334 USD
View
B+
Retailer 7
-
€435 EUR
$488 USD
View
B
Retailer 8
-
€535 EUR
$600 USD
View
Most Expensive
B
MOH London
LG604304627 · Oct 29
€1,223 EUR
£1,080 GBP
View
8 more retailers have this diamond
Prices start from €243 EURSave up to €979 EUR

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
€243 EUR