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Cushion|Lab Grown|IGI

12.36ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG729591057

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG729591057

Diamond specifications and retailer prices

From $4,680 AUD
$3,280 USD
As of November 2, 2026
Save $23,958 AUD (84%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $28,638 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 12.36ct lab-grown cushion diamond

This 12.36ct lab-grown cushion sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG729591057 or 729591057. Listed at 14 retailers as of November 2, 2026, with prices from $4,680 to $28,638, a $23,958 spread on the same certified stone. Brilliant Earth lists it at $28,638. 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

12.36
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle30.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG729591057
Dimensions13.38 × 12.46 × 7.99 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.38 mm12.46 mm12.36 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG729591057
Side View
Table 63.0%Crown 34.2°Girdle: THK-VTKPavilion 30.2°Culet: NoneDepth 64.1%

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 2
Current: $28,638 AUD|Low: $4,677 AUD|High: $29,537 AUD|Avg: $9,834 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
November 2, 2026
Retailer 9$4,677 AUD
Retailer 8$4,680 AUD
Retailer 12$5,312 AUD
Retailer 5$6,268 AUD
Retailer 7$7,242 AUD
Retailer 11$7,276 AUD
Retailer 3$8,068 AUD
Retailer 2$8,210 AUD
Retailer 6$8,667 AUD
Retailer 10$11,751 AUD
Retailer 4$13,022 AUD
Brilliant Earth$28,638 AUD

36 data points across 12 retailers

14 retailers$4,680 AUD to $28,638 AUD

Retailer 1
-
$4,677 AUD
$3,278 USD
Price last confirmed 21 days ago
A
Retailer 2
-
$4,680 AUD
$3,280 USD
View
A
Retailer 3
-
$5,312 AUD
$3,723 USD
View
A
Retailer 4
-
$6,268 AUD
£3,459 GBP
View
A
Retailer 5
-
$7,242 AUD
ZAR 81,990 ZAR
View
A
Retailer 6
-
$7,276 AUD
$5,099 USD
View
B+
Retailer 7
-
$8,068 AUD
£4,452 GBP
View
B+
Retailer 8
-
$8,210 AUD
€5,480 EUR
View
B+
Retailer 9
-
$8,667 AUD
View
Retailer 10
-
$9,175 AUD
$6,430 USD
View
B+
Retailer 11
-
$11,751 AUD
$8,235 USD
View
B
Retailer 12
-
$13,022 AUD
$9,126 USD
View
B
Retailer 13
-
$16,301 AUD
$11,424 USD
View
Most Expensive
B
Brilliant Earth
16273365A · Nov 2
$28,638 AUD
$20,070 USD
View
13 more retailers have this diamond
Prices start from $4,680 AUDSave up to $23,958 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
12.36ct Cushion
$4,680 AUD