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Cushion|Lab Grown|IGI

1.09ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG802610151

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG802610151

Diamond specifications and retailer prices

From £370 GBP
$496 USD
As of October 30, 2026
Save £1,143 GBP (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,626 GBP at Flawless Fine Jewelry · As of October 8, 2026
View at Flawless Fine Jewelry

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG802610151 or 802610151. Listed at 11 retailers as of October 29, 2026, with a 309% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG802610151
Dimensions8.08 × 5.14 × 2.94 mm
L/W Ratio1.57
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.08 mm5.14 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG802610151
Side View
Table 59.0%Crown 37.5°Girdle: MED-STKPavilion 37.9°Culet: LargeDepth 57.2%

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: Oct 30
Current: £1,626 GBP|Low: £370 GBP|High: £2,793 GBP|Avg: £1,188 GBP|-13.9%
Flawless Fine Jewelry
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 3£370 GBP
Retailer 10£410 GBP
Retailer 6£619 GBP
Retailer 11£631 GBP
Retailer 7£643 GBP
Retailer 2£677 GBP
Retailer 4£998 GBP
Retailer 8£1,341 GBP
Retailer 9£1,469 GBP
Retailer 5£1,513 GBP
Flawless Fine Jewelry£1,626 GBP

43 data points across 11 retailers

11 retailers£370 GBP to £1,513 GBP

A
Cheapest Retailer
-
£370 GBP
$496 USD
Final sale: no returns
Retailer 2
-
£410 GBP
$549 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
£619 GBP
$830 USD
View
A
Retailer 4
-
£631 GBP
$845 USD
View
A
Retailer 5
-
£643 GBP
$862 USD
View
B+
Retailer 6
-
£677 GBP
View
B+
Retailer 7
-
£998 GBP
A$2,058 AUD
View
B
Retailer 8
-
£1,341 GBP
$1,797 USD
View
B
Retailer 9
-
£1,469 GBP
$1,968 USD
View
B
Retailer 10
-
£1,513 GBP
View
Most Expensive
Flawless Fine Jewelry
2EB9FEDC1 · Oct 8
£1,626 GBP
View
Price last confirmed 23 days ago
10 more retailers have this diamond
Prices start from £370 GBPSave up to £1,143 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
£370 GBP