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Cushion|Lab Grown|IGI

15.12ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG791634382

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG791634382

Diamond specifications and retailer prices

From £5,295 GBP
$7,106 USD
As of November 1, 2026
Save £5,386 GBP (50%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £10,681 GBP at Frank Darling · As of November 2, 2026
View at Frank Darling

About this 15.12ct lab-grown cushion diamond

This 15.12ct 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 LG791634382 or 791634382. Listed at 3 retailers as of November 1, 2026, with prices from £5,295 to £10,681, a £5,386 spread on the same certified stone. Frank Darling lists it at £10,681. 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

15.12
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG791634382
Dimensions18.55 × 12.90 × 8.47 mm
L/W Ratio1.44
Girdle conditionFaceted
Culet sizeLarge
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
18.55 mm12.90 mm15.12 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG791634382
Side View
Table 37.0%Crown 32.6°Girdle: STK-THKPavilion 35.7°Culet: LargeDepth 65.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 1
Current: £10,681 GBP|Low: £5,295 GBP|High: £15,605 GBP|Avg: £9,087 GBP|-31.6%
Frank Darling
Retailer 2
Retailer 3
November 1, 2026
Retailer 2£5,295 GBP
Retailer 3£7,008 GBP
Frank Darling£10,681 GBP

11 data points across 3 retailers

3 retailers£5,295 GBP to £10,681 GBP

B+
Cheapest Retailer
-
£5,295 GBP
$7,106 USD
Retailer 2
-
£7,008 GBP
$9,405 USD
View
Price last confirmed 9 days ago
Most Expensive
B
Frank Darling
913564BD · Nov 2
£10,681 GBP
$14,333 USD
View
2 more retailers have this diamond
Prices start from £5,295 GBPSave up to £5,386 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.

B+
15.12ct Cushion
£5,295 GBP