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Cushion|Lab Grown|IGI

11.09ct G VS1 Cushion Lab Grown Diamond

EX • G/VS1 • IGI LG678596589

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG678596589

Diamond specifications and retailer prices

From £2,045 GBP
$2,740 USD
As of October 31, 2026
Save £4,673 GBP (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,718 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 11.09ct lab-grown cushion diamond

This 11.09ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG678596589 or 678596589. Listed at 11 retailers as of October 31, 2026, with prices from £2,045 to £6,718, a £4,673 spread on the same certified stone. Taylor and Hart lists it at £6,718. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

11.09
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle33.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678596589
Dimensions15.34 × 11.73 × 7.57 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.34 mm11.73 mm11.09 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678596589
Side View
Table 60.0%Crown 35.6°Girdle: STK-THKPavilion 33.8°Culet: NoneDepth 64.5%

Caratlytics Score

How it works →
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: £3,562 GBP|Low: £1,552 GBP|High: £6,915 GBP|Avg: £3,775 GBP|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 1, 2026
Retailer 6£1,552 GBP
Retailer 7£1,923 GBP
Retailer 5£2,045 GBP
Retailer 3£2,647 GBP
Retailer 4£2,976 GBP
Retailer 10£3,002 GBP
Retailer 1£3,562 GBP
Retailer 8£3,651 GBP
Retailer 2£5,133 GBP
Retailer 9£5,474 GBP
Taylor and Hart£6,718 GBP

42 data points across 11 retailers

11 retailers£2,045 GBP to £6,718 GBP

Retailer 1
-
£1,552 GBP
Price last confirmed 15 days ago
Retailer 2
-
£1,923 GBP
$2,576 USD
View
Price last confirmed 21 days ago
A
Retailer 3
-
£2,045 GBP
$2,740 USD
View
A
Retailer 4
-
£2,647 GBP
View
A
Retailer 5
-
£2,976 GBP
ZAR 64,423 ZAR
View
A
Retailer 6
-
£3,002 GBP
$4,022 USD
View
Retailer 7
-
£3,562 GBP
A$7,343 AUD
View
B+
Retailer 8
-
£3,651 GBP
View
B+
Retailer 9
-
£5,133 GBP
$6,878 USD
View
B+
Retailer 10
-
£5,474 GBP
$7,334 USD
View
Most Expensive
B
Taylor and Hart
BUENFQE · Oct 31
£6,718 GBP
$9,002 USD
View
10 more retailers have this diamond
Prices start from £2,045 GBPSave up to £4,673 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
11.09ct Cushion
£2,045 GBP