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Cushion|Lab Grown|IGI

11.73ct G VS2 Cushion Lab Grown Diamond

ID • G/VS2 • IGI LG620435609

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG620435609

Diamond specifications and retailer prices

From $2,746 AUD
£1,519 GBP
As of October 30, 2026
Save $10,494 AUD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $13,239 AUD 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 LG620435609 or 620435609. Listed at 16 retailers as of October 29, 2026, with prices from $2,746 to $13,239, a $10,494 spread on the same certified stone. Brilliant Earth lists it at $13,239. 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 angle37.9°
Pavilion angle32°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620435609
Dimensions12.81 × 12.60 × 7.89 mm
L/W Ratio1.02
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
12.81 mm12.60 mm11.73 ctG / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620435609
Side View
Table 63.0%Crown 37.9°Girdle: STK-VTKPavilion 32°Culet: NoneDepth 62.6%

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 30
Current: $13,239 AUD|Low: $2,746 AUD|High: $13,652 AUD|Avg: $6,221 AUD|-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
Retailer 13
Retailer 14
October 31, 2026
Retailer 8$2,746 AUD
Retailer 14$3,290 AUD
Retailer 3$3,408 AUD
Retailer 11$3,644 AUD
Retailer 4$4,188 AUD
Retailer 7$4,690 AUD
Retailer 9$4,872 AUD
Retailer 10$4,968 AUD
Retailer 2$5,139 AUD
Retailer 5$6,465 AUD
Retailer 6$8,450 AUD
Retailer 13$9,182 AUD
Retailer 12$9,694 AUD
Brilliant Earth$13,239 AUD

41 data points across 14 retailers

16 retailers$2,746 AUD to $13,239 AUD

A
Cheapest Retailer
-
$2,746 AUD
£1,519 GBP
A
Retailer 2
-
$3,290 AUD
$2,311 USD
View
Final sale: no returns
Retailer 3
-
$3,408 AUD
$2,394 USD
View
Price last confirmed 20 days ago
A
Retailer 4
-
$3,644 AUD
$2,560 USD
View
A
Retailer 5
-
$4,188 AUD
$2,942 USD
View
A
Retailer 6
-
$4,690 AUD
£2,594 GBP
View
B+
Retailer 7
-
$4,872 AUD
$3,422 USD
View
A
Retailer 8
-
$4,968 AUD
$3,490 USD
View
A
Retailer 9
-
$5,139 AUD
€3,438 EUR
View
A
Retailer 10
-
$6,465 AUD
£3,576 GBP
View
B+
Retailer 11
-
$8,450 AUD
$5,935 USD
View
B+
Retailer 12
-
$9,182 AUD
$6,450 USD
View
B
Retailer 13
-
$9,694 AUD
$6,809 USD
View
B
Retailer 14
-
$11,222 AUD
$7,883 USD
View
B
Retailer 15
-
$11,922 AUD
$8,375 USD
View
Most Expensive
B
Brilliant Earth
10794619A · Oct 29
$13,239 AUD
$9,300 USD
View
15 more retailers have this diamond
Prices start from $2,746 AUDSave up to $10,494 AUD

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
$2,746 AUD