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Cushion|Lab Grown|IGI

11.73ct G VS2 Cushion Lab Grown Diamond

ID • G/VS2 • IGI LG578328940

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG578328940

Diamond specifications and retailer prices

From £1,488 GBP
$1,994 USD
As of October 29, 2026
Save £5,505 GBP (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,993 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 11.73ct lab-grown cushion diamond

This 11.73ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG578328940 or 578328940. Listed at 11 retailers as of October 29, 2026, with prices from £1,488 to £6,993, a £5,505 spread on the same certified stone. Brilliant Earth lists it at £6,993. 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

11.73
Carat
G
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG578328940
Dimensions15.55 × 12.00 × 8.24 mm
L/W Ratio1.30
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
15.55 mm12.00 mm11.73 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG578328940
Side View
Table 64.0%Crown 35.6°Girdle: THN-MEDPavilion 40.8°Culet: NoneDepth 68.7%

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 29
Current: £6,993 GBP|Low: £1,064 GBP|High: £6,993 GBP|Avg: £3,194 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 7£1,488 GBP
Retailer 5£1,542 GBP
Retailer 2£2,186 GBP
Retailer 6£2,377 GBP
Retailer 4£2,420 GBP
Retailer 3£2,450 GBP
Retailer 8£3,196 GBP
Retailer 9£4,700 GBP
Retailer 10£5,813 GBP
Brilliant Earth£6,993 GBP

40 data points across 10 retailers

11 retailers£1,488 GBP to £6,993 GBP

A
Cheapest Retailer
-
£1,488 GBP
$1,994 USD
Final sale: no returns
Retailer 2
-
£1,542 GBP
$2,066 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
£2,186 GBP
View
A
Retailer 4
-
£2,377 GBP
$3,185 USD
View
B+
Retailer 5
-
£2,420 GBP
$3,242 USD
View
A
Retailer 6
-
£2,450 GBP
€3,126 EUR
View
A
Retailer 7
-
£3,196 GBP
View
Retailer 8
-
£4,700 GBP
$6,298 USD
View
Price last confirmed 52 days ago
B+
Retailer 9
-
£5,405 GBP
$7,242 USD
View
B+
Retailer 10
-
£5,813 GBP
$7,789 USD
View
Most Expensive
B
Brilliant Earth
21584506A · Oct 29
£6,993 GBP
$9,370 USD
View
10 more retailers have this diamond
Prices start from £1,488 GBPSave up to £5,505 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
11.73ct Cushion
£1,488 GBP