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Cushion|Lab Grown|IGI

3.09ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG776656912

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG776656912

Diamond specifications and retailer prices

From $1,180 AUD
£649 GBP
As of November 2, 2026
Save $3,423 AUD (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,945 AUD at Brilliant Earth · As of October 26, 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 LG776656912 or 776656912. Listed at 15 retailers as of November 2, 2026, with a 290% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776656912
Dimensions8.73 × 8.42 × 5.49 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.73 mm8.42 mm3.09 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776656912
Side View
Table 61.0%Crown 34.7°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 65.2%

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: $6,945 AUD|Low: $1,180 AUD|High: $7,346 AUD|Avg: $2,975 AUD|-5.5%
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 9$1,180 AUD
Retailer 5$1,627 AUD
Retailer 15$1,628 AUD
Retailer 13$1,632 AUD
Retailer 2$1,658 AUD
Retailer 11$1,764 AUD
Retailer 7$1,820 AUD
Retailer 12$2,239 AUD
Retailer 8$2,301 AUD
Retailer 4$3,077 AUD
Retailer 14$3,382 AUD
Retailer 3$3,406 AUD
Retailer 6$4,098 AUD
Retailer 10$4,603 AUD
Brilliant Earth$6,945 AUD

42 data points across 15 retailers

15 retailers$1,180 AUD to $4,603 AUD

A
Cheapest Retailer
-
$1,180 AUD
£649 GBP
A
Retailer 2
-
$1,627 AUD
$1,136 USD
View
A
Retailer 3
-
$1,628 AUD
$1,137 USD
View
A
Retailer 4
-
$1,632 AUD
$1,140 USD
View
A
Retailer 5
-
$1,658 AUD
£912 GBP
View
A
Retailer 6
-
$1,764 AUD
€1,173 EUR
View
A
Retailer 7
-
$2,239 AUD
View
A
Retailer 8
-
$2,301 AUD
ZAR 25,965 ZAR
View
B+
Retailer 9
-
$2,978 AUD
$2,080 USD
View
Retailer 10
-
$3,077 AUD
£1,692 GBP
View
Price last confirmed 19 days ago
B+
Retailer 11
-
$3,382 AUD
$2,362 USD
View
B+
Retailer 12
-
$3,406 AUD
SGD 3,214 SGD
View
B
Retailer 13
-
$4,098 AUD
$2,862 USD
View
B
Retailer 14
-
$4,603 AUD
£2,531 GBP
View
Most Expensive
Brilliant Earth
18233605A · Oct 26
$6,945 AUD
$4,850 USD
View
Price last confirmed 8 days ago
14 more retailers have this diamond
Prices start from $1,180 AUDSave up to $3,423 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
$1,180 AUD