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Cushion|Lab Grown|IGI

15.05ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG807658774

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG807658774

Diamond specifications and retailer prices

From £2,644 GBP
As of November 1, 2026
Save £10,198 GBP (79%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £12,842 GBP at With Clarity · As of November 2, 2026
View at With Clarity

About this 15.05ct lab-grown cushion diamond

This 15.05ct 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 LG807658774 or 807658774. Listed at 15 retailers as of November 1, 2026, with prices from £2,644 to £12,842, a £10,198 spread on the same certified stone. With Clarity lists it at £12,842. 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

15.05
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807658774
Dimensions18.62 × 12.38 × 8.05 mm
L/W Ratio1.50
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.62 mm12.38 mm15.05 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807658774
Side View
Table 65.0%Crown 34.8°Girdle: MED-THKPavilion 34.5°Culet: NoneDepth 65.0%

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 1
Current: £2,644 GBP|Low: £2,643 GBP|High: £17,636 GBP|Avg: £7,270 GBP|-1.2%
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
November 1, 2026
Retailer 1£2,644 GBP
Retailer 9£3,214 GBP
Retailer 14£3,879 GBP
Retailer 13£4,021 GBP
Retailer 10£4,023 GBP
Retailer 7£4,311 GBP
Retailer 8£5,059 GBP
Retailer 12£5,153 GBP
Retailer 11£8,696 GBP
Retailer 4£9,140 GBP
Retailer 3£11,027 GBP
Retailer 5£11,452 GBP
Retailer 2£11,643 GBP
Retailer 6£17,636 GBP

40 data points across 14 retailers

15 retailers£2,644 GBP to £12,842 GBP

A
Cheapest Retailer
-
£2,644 GBP
A
Retailer 2
-
£3,214 GBP
$4,306 USD
View
Final sale: no returns
A
Retailer 3
-
£3,879 GBP
HK$40,600 HKD
View
A
Retailer 4
-
£4,021 GBP
$5,388 USD
View
A
Retailer 5
-
£4,023 GBP
$5,390 USD
View
A
Retailer 6
-
£4,311 GBP
View
B+
Retailer 7
-
£4,978 GBP
$6,670 USD
View
B+
Retailer 8
-
£5,059 GBP
€6,456 EUR
View
Retailer 9
-
£5,153 GBP
$6,905 USD
View
Price last confirmed 11 days ago
B
Retailer 10
-
£8,696 GBP
$11,651 USD
View
B
Retailer 11
-
£9,140 GBP
$12,246 USD
View
B
Retailer 12
-
£11,027 GBP
$14,775 USD
View
B
Retailer 13
-
£11,452 GBP
$15,344 USD
View
B
Retailer 14
-
£11,643 GBP
$15,601 USD
View
Most Expensive
B
With Clarity
807658774 · Nov 2
£12,842 GBP
$17,207 USD
View
14 more retailers have this diamond
Prices start from £2,644 GBPSave up to £10,198 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
15.05ct Cushion
£2,644 GBP