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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 $5,227 AUD
$3,672 USD
As of November 1, 2026
Save $14,134 AUD (73%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $19,361 AUD 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 $5,227 to $19,361, a $14,134 spread on the same certified stone. Brilliant Earth lists it at $19,361. 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: Nov 1
Current: $19,361 AUD|Low: $5,227 AUD|High: $25,269 AUD|Avg: $9,698 AUD|-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$5,227 AUD
Retailer 12$5,415 AUD
Retailer 13$5,915 AUD
Retailer 10$6,829 AUD
Retailer 9$6,833 AUD
Retailer 4$8,266 AUD
Retailer 7$8,381 AUD
Retailer 11$8,405 AUD
Retailer 6$8,640 AUD
Retailer 2$10,079 AUD
Retailer 8$11,412 AUD
Retailer 5$15,022 AUD
Brilliant Earth$19,361 AUD

34 data points across 13 retailers

14 retailers$5,227 AUD to $19,361 AUD

A
Cheapest Retailer
-
$5,227 AUD
$3,672 USD
Final sale: no returns
Retailer 2
-
$5,415 AUD
$3,804 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
$5,915 AUD
$4,155 USD
View
A
Retailer 4
-
$6,829 AUD
$4,797 USD
View
A
Retailer 5
-
$6,833 AUD
$4,800 USD
View
A
Retailer 6
-
$8,266 AUD
£4,572 GBP
View
A
Retailer 7
-
$8,381 AUD
ZAR 95,106 ZAR
View
A
Retailer 8
-
$8,405 AUD
$5,904 USD
View
A
Retailer 9
-
$8,640 AUD
€5,780 EUR
View
B+
Retailer 10
-
$10,079 AUD
View
B+
Retailer 11
-
$11,412 AUD
$8,016 USD
View
B
Retailer 12
-
$15,022 AUD
$10,552 USD
View
B
Retailer 13
-
$18,964 AUD
$13,321 USD
View
Most Expensive
B
Brilliant Earth
20602204A · Oct 31
$19,361 AUD
$13,600 USD
View
13 more retailers have this diamond
Prices start from $5,227 AUDSave up to $14,134 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
12.72ct Cushion
$5,227 AUD