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Cushion|Lab Grown|IGI

1.09ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG683592970

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG683592970

Diamond specifications and retailer prices

From £241 GBP
$323 USD
As of October 30, 2026
Save £1,010 GBP (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,251 GBP at Queensmith · As of October 27, 2026
View at Queensmith

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 LG683592970 or 683592970. Listed at 14 retailers as of October 27, 2026, with prices from £241 to £1,251, a £1,010 spread on the same certified stone. Queensmith lists it at £1,251. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG683592970
Dimensions7.45 × 5.37 × 3.27 mm
L/W Ratio1.39
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.45 mm5.37 mm1.09 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG683592970
Side View
Table 64.0%Crown 34.8°Girdle: THK-VTKPavilion 35.4°Culet: NoneDepth 60.9%

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 30
Current: £432 GBP|Low: £241 GBP|High: £1,619 GBP|Avg: £653 GBP|-29.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 14£241 GBP
Retailer 11£268 GBP
Retailer 4£360 GBP
Retailer 10£362 GBP
Retailer 1£432 GBP
Retailer 3£449 GBP
Retailer 9£461 GBP
Retailer 7£470 GBP
Retailer 2£501 GBP
Retailer 8£654 GBP
Retailer 6£898 GBP
Retailer 12£1,015 GBP
Retailer 13£1,080 GBP
Retailer 5£1,104 GBP

40 data points across 14 retailers

14 retailers£241 GBP to £1,251 GBP

A
Cheapest Retailer
-
£241 GBP
$323 USD
Final sale: no returns
A
Retailer 2
-
£360 GBP
$482 USD
View
A
Retailer 3
-
£362 GBP
$485 USD
View
A
Retailer 4
-
£432 GBP
€551 EUR
View
A
Retailer 5
-
£449 GBP
$602 USD
View
A
Retailer 6
-
£461 GBP
ZAR 9,970 ZAR
View
A
Retailer 7
-
£470 GBP
View
A
Retailer 8
-
£501 GBP
$671 USD
View
A
Retailer 9
-
£654 GBP
A$1,348 AUD
View
B+
Retailer 10
-
£898 GBP
$1,203 USD
View
Retailer 11
-
£1,015 GBP
$1,360 USD
View
Price last confirmed 13 days ago
B+
Retailer 12
-
£1,080 GBP
View
B+
Retailer 13
-
£1,104 GBP
$1,480 USD
View
Most Expensive
B
Queensmith
LG683592970 · Oct 27
£1,251 GBP
View
13 more retailers have this diamond
Prices start from £241 GBPSave up to £1,010 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
£241 GBP