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Cushion|Lab Grown|IGI

11.50ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG809607876

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG809607876

Diamond specifications and retailer prices

From £2,499 GBP
$3,353 USD
As of November 2, 2026
Save £8,267 GBP (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £10,766 GBP at With Clarity · As of November 2, 2026
View at With Clarity

About this 11.5ct lab-grown cushion diamond

This 11.5ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG809607876 or 809607876. Listed at 10 retailers as of November 2, 2026, with prices from £2,499 to £10,766, a £8,267 spread on the same certified stone. With Clarity lists it at £10,766. 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

11.50
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809607876
Dimensions16.86 × 11.37 × 7.63 mm
L/W Ratio1.48
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.86 mm11.37 mm11.50 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809607876
Side View
Table 67.0%Crown 33.6°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 67.1%

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: Nov 2
Current: £2,883 GBP|Low: £2,398 GBP|High: £10,766 GBP|Avg: £4,789 GBP|-6.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 3, 2026
Retailer 8£2,499 GBP
Retailer 7£2,547 GBP
Retailer 1£2,883 GBP
Retailer 5£3,359 GBP
Retailer 2£3,416 GBP
Retailer 4£4,691 GBP
Retailer 6£6,464 GBP
Retailer 3£6,527 GBP
Retailer 9£7,524 GBP
With Clarity£10,766 GBP

41 data points across 10 retailers

10 retailers£2,499 GBP to £10,766 GBP

A
Cheapest Retailer
-
£2,499 GBP
$3,353 USD
A
Retailer 2
-
£2,547 GBP
HK$26,700 HKD
View
A
Retailer 3
-
£2,883 GBP
View
A
Retailer 4
-
£3,359 GBP
$4,508 USD
View
A
Retailer 5
-
£3,416 GBP
€4,366 EUR
View
Retailer 6
-
£4,691 GBP
$6,295 USD
View
Price last confirmed 12 days ago
B
Retailer 7
-
£6,464 GBP
$8,674 USD
View
B
Retailer 8
-
£6,527 GBP
A$13,475 AUD
View
B
Retailer 9
-
£7,524 GBP
$10,097 USD
View
Most Expensive
B
With Clarity
809607876 · Nov 2
£10,766 GBP
$14,447 USD
View
9 more retailers have this diamond
Prices start from £2,499 GBPSave up to £8,267 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
11.50ct Cushion
£2,499 GBP