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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 $3,412 NZD
£1,514 GBP
As of November 1, 2026
Save $13,089 NZD (79%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $16,501 NZD at Brilliant Earth · As of October 31, 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 31, 2026, with prices from $3,412 to $16,501, a $13,089 spread on the same certified stone. Brilliant Earth lists it at $16,501. 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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $16,501 NZD|Low: $3,412 NZD|High: $17,016 NZD|Avg: $7,745 NZD|-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
November 1, 2026
Retailer 2$3,412 NZD
Retailer 14$4,100 NZD
Retailer 3$4,248 NZD
Retailer 11$4,542 NZD
Retailer 4$5,220 NZD
Retailer 7$5,845 NZD
Retailer 9$6,072 NZD
Retailer 10$6,192 NZD
Retailer 8$6,405 NZD
Retailer 5$8,058 NZD
Retailer 6$10,531 NZD
Retailer 13$11,444 NZD
Retailer 12$12,082 NZD
Brilliant Earth$16,501 NZD

42 data points across 14 retailers

16 retailers$3,412 NZD to $16,501 NZD

A
Cheapest Retailer
-
$3,412 NZD
£1,514 GBP
A
Retailer 2
-
$4,100 NZD
$2,311 USD
View
Final sale: no returns
Retailer 3
-
$4,248 NZD
$2,394 USD
View
Price last confirmed 21 days ago
A
Retailer 4
-
$4,542 NZD
$2,560 USD
View
A
Retailer 5
-
$5,220 NZD
$2,942 USD
View
A
Retailer 6
-
$5,845 NZD
£2,594 GBP
View
B+
Retailer 7
-
$6,072 NZD
$3,422 USD
View
A
Retailer 8
-
$6,192 NZD
$3,490 USD
View
A
Retailer 9
-
$6,405 NZD
€3,438 EUR
View
A
Retailer 10
-
$8,058 NZD
£3,576 GBP
View
B+
Retailer 11
-
$10,531 NZD
$5,935 USD
View
B+
Retailer 12
-
$11,444 NZD
$6,450 USD
View
B
Retailer 13
-
$12,082 NZD
$6,809 USD
View
B
Retailer 14
-
$13,987 NZD
$7,883 USD
View
B
Retailer 15
-
$14,859 NZD
$8,375 USD
View
Most Expensive
B
Brilliant Earth
10794619A · Oct 31
$16,501 NZD
$9,300 USD
View
15 more retailers have this diamond
Prices start from $3,412 NZDSave up to $13,089 NZD

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
$3,412 NZD