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Cushion|Lab Grown|IGI

3.09ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG828654239

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG828654239

Diamond specifications and retailer prices

From $775 AUD
£426 GBP
As of November 2, 2026
Save $3,163 AUD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,938 AUD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 3.09ct lab-grown cushion diamond

This 3.09ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828654239 or 828654239. Listed at 15 retailers as of November 2, 2026, with prices from $775 to $3,938, a $3,163 spread on the same certified stone. Brilliant Earth lists it at $3,938. 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

3.09
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828654239
Dimensions9.16 × 8.85 × 5.46 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.16 mm8.85 mm3.09 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828654239
Side View
Table 66.0%Crown 35.1°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

How it works →
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: $3,938 AUD|Low: $720 AUD|High: $3,938 AUD|Avg: $1,849 AUD
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
Retailer 15
November 3, 2026
Retailer 6$720 AUD
Retailer 9$775 AUD
Retailer 3$909 AUD
Retailer 13$934 AUD
Retailer 11$1,137 AUD
Retailer 2$1,142 AUD
Retailer 4$1,466 AUD
Retailer 8$1,517 AUD
Retailer 14$1,525 AUD
Retailer 15$2,291 AUD
Retailer 12$2,436 AUD
Retailer 10$2,720 AUD
Retailer 7$2,881 AUD
Retailer 5$3,007 AUD
Brilliant Earth$3,938 AUD

28 data points across 15 retailers

15 retailers$775 AUD to $3,938 AUD

Retailer 1
-
$720 AUD
$503 USD
Price last confirmed 9 days ago
A
Retailer 2
-
$775 AUD
£426 GBP
View
A
Retailer 3
-
$909 AUD
$635 USD
View
B+
Retailer 4
-
$934 AUD
$652 USD
View
A
Retailer 5
-
$1,137 AUD
€756 EUR
View
A
Retailer 6
-
$1,142 AUD
£628 GBP
View
A
Retailer 7
-
$1,466 AUD
View
A
Retailer 8
-
$1,517 AUD
ZAR 17,113 ZAR
View
A
Retailer 9
-
$1,525 AUD
$1,065 USD
View
B+
Retailer 10
-
$2,291 AUD
$1,600 USD
View
B+
Retailer 11
-
$2,436 AUD
$1,701 USD
View
B+
Retailer 12
-
$2,720 AUD
£1,496 GBP
View
Retailer 13
-
$2,881 AUD
SGD 2,719 SGD
View
Price last confirmed 26 days ago
B+
Retailer 14
-
$3,007 AUD
$2,100 USD
View
Most Expensive
B
Brilliant Earth
21721451A · Nov 3
$3,938 AUD
$2,750 USD
View
14 more retailers have this diamond
Prices start from $775 AUDSave up to $3,163 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
3.09ct Cushion
$775 AUD