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Cushion|Lab Grown|IGI

12.72ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG605389037

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG605389037

Diamond specifications and retailer prices

From £2,741 GBP
$3,672 USD
As of October 31, 2026
Save £7,410 GBP (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £10,150 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 12.72ct lab-grown cushion diamond

This 12.72ct lab-grown cushion sits in the over five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG605389037 or 605389037. Listed at 14 retailers as of October 31, 2026, with prices from £2,741 to £10,150, a £7,410 spread on the same certified stone. Brilliant Earth lists it at £10,150. 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

12.72
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle30.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG605389037
Dimensions13.49 × 12.81 × 7.99 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
13.49 mm12.81 mm12.72 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG605389037
Side View
Table 64.0%Crown 34°Girdle: STK-VTKPavilion 30.5°Culet: NoneDepth 62.4%

Caratlytics Score

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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: £10,150 GBP|Low: £1,957 GBP|High: £13,247 GBP|Avg: £5,087 GBP|-23.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 3£2,741 GBP
Retailer 12£2,839 GBP
Retailer 13£3,101 GBP
Retailer 10£3,580 GBP
Retailer 9£3,582 GBP
Retailer 4£4,334 GBP
Retailer 7£4,394 GBP
Retailer 11£4,406 GBP
Retailer 6£4,529 GBP
Retailer 2£5,284 GBP
Retailer 8£5,983 GBP
Retailer 5£7,876 GBP
Brilliant Earth£10,150 GBP

35 data points across 13 retailers

14 retailers£2,741 GBP to £10,150 GBP

A
Cheapest Retailer
-
£2,741 GBP
$3,672 USD
Final sale: no returns
Retailer 2
-
£2,839 GBP
$3,804 USD
View
Price last confirmed 19 days ago
A
Retailer 3
-
£3,101 GBP
$4,155 USD
View
A
Retailer 4
-
£3,580 GBP
$4,797 USD
View
A
Retailer 5
-
£3,582 GBP
$4,800 USD
View
A
Retailer 6
-
£4,334 GBP
View
A
Retailer 7
-
£4,394 GBP
ZAR 95,106 ZAR
View
A
Retailer 8
-
£4,406 GBP
$5,904 USD
View
A
Retailer 9
-
£4,529 GBP
€5,780 EUR
View
B+
Retailer 10
-
£5,284 GBP
A$10,892 AUD
View
B+
Retailer 11
-
£5,983 GBP
$8,016 USD
View
B
Retailer 12
-
£7,876 GBP
$10,552 USD
View
B
Retailer 13
-
£9,942 GBP
$13,321 USD
View
Most Expensive
B
Brilliant Earth
20602204A · Oct 31
£10,150 GBP
$13,600 USD
View
13 more retailers have this diamond
Prices start from £2,741 GBPSave up to £7,410 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
12.72ct Cushion
£2,741 GBP