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Cushion|Lab Grown|IGI

12.36ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG729591057

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG729591057

Diamond specifications and retailer prices

From £2,444 GBP
$3,280 USD
As of November 2, 2026
Save £12,512 GBP (84%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £14,956 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 12.36ct lab-grown cushion diamond

This 12.36ct 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 LG729591057 or 729591057. Listed at 13 retailers as of November 2, 2026, with prices from £2,444 to £14,956, a £12,512 spread on the same certified stone. Brilliant Earth lists it at £14,956. 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

12.36
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle30.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729591057
Dimensions13.38 × 12.46 × 7.99 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.38 mm12.46 mm12.36 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729591057
Side View
Table 63.0%Crown 34.2°Girdle: THK-VTKPavilion 30.2°Culet: NoneDepth 64.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: £14,956 GBP|Low: £2,443 GBP|High: £15,425 GBP|Avg: £5,136 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9£2,443 GBP
Retailer 8£2,444 GBP
Retailer 12£2,774 GBP
Retailer 5£3,273 GBP
Retailer 7£3,782 GBP
Retailer 11£3,800 GBP
Retailer 3£4,213 GBP
Retailer 2£4,288 GBP
Retailer 6£4,526 GBP
Retailer 10£6,137 GBP
Retailer 4£6,801 GBP
Brilliant Earth£14,956 GBP

36 data points across 12 retailers

13 retailers£2,444 GBP to £14,956 GBP

Retailer 1
-
£2,443 GBP
$3,278 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£2,444 GBP
$3,280 USD
View
A
Retailer 3
-
£2,774 GBP
$3,723 USD
View
A
Retailer 4
-
£3,273 GBP
View
A
Retailer 5
-
£3,782 GBP
ZAR 81,990 ZAR
View
A
Retailer 6
-
£3,800 GBP
$5,099 USD
View
B+
Retailer 7
-
£4,213 GBP
View
B+
Retailer 8
-
£4,288 GBP
€5,480 EUR
View
B+
Retailer 9
-
£4,526 GBP
A$9,345 AUD
View
B+
Retailer 10
-
£6,137 GBP
$8,235 USD
View
B
Retailer 11
-
£6,801 GBP
$9,126 USD
View
B
Retailer 12
-
£8,513 GBP
$11,424 USD
View
Most Expensive
B
Brilliant Earth
16273365A · Nov 2
£14,956 GBP
$20,070 USD
View
12 more retailers have this diamond
Prices start from £2,444 GBPSave up to £12,512 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
12.36ct Cushion
£2,444 GBP