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Cushion|Lab Grown|IGI

3.15ct G VS1 Cushion Lab Grown Diamond

ID • G/VS1 • IGI LG668409650

Shape and cutting style on the report: Cushion modified brilliant cut

Certificate IGI LG668409650

Diamond specifications and retailer prices

From $606 AUD
$425 USD
As of November 1, 2026
Save $3,389 AUD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,995 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 3.15ct lab-grown cushion diamond

This 3.15ct 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 LG668409650 or 668409650. Listed at 14 retailers as of November 1, 2026, with prices from $606 to $3,995, a $3,389 spread on the same certified stone. Brilliant Earth lists it at $3,995. 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

3.15
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.6°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668409650
Dimensions9.20 × 7.49 × 5.34 mm
L/W Ratio1.23
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.20 mm7.49 mm3.15 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG668409650
Side View
Table 58.0%Crown 37.6°Girdle: STK-VTKPavilion 34.2°Culet: NoneDepth 71.3%

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: $3,995 AUD|Low: $606 AUD|High: $4,138 AUD|Avg: $1,698 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
November 2, 2026
Retailer 6$606 AUD
Retailer 5$681 AUD
Retailer 10$1,049 AUD
Retailer 14$1,072 AUD
Retailer 12$1,114 AUD
Retailer 9$1,175 AUD
Retailer 7$1,206 AUD
Retailer 2$1,464 AUD
Retailer 11$1,565 AUD
Retailer 3$2,215 AUD
Retailer 13$2,516 AUD
Retailer 4$2,610 AUD
Retailer 8$2,626 AUD
Brilliant Earth$3,995 AUD

44 data points across 14 retailers

14 retailers$606 AUD to $3,995 AUD

A
Cheapest Retailer
-
$606 AUD
$425 USD
Final sale: no returns
Retailer 2
-
$681 AUD
$477 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$1,049 AUD
$735 USD
View
B+
Retailer 4
-
$1,072 AUD
$751 USD
View
A
Retailer 5
-
$1,114 AUD
$781 USD
View
A
Retailer 6
-
$1,175 AUD
€784 EUR
View
A
Retailer 7
-
$1,206 AUD
£665 GBP
View
A
Retailer 8
-
$1,464 AUD
ZAR 16,577 ZAR
View
A
Retailer 9
-
$1,565 AUD
$1,097 USD
View
B+
Retailer 10
-
$2,215 AUD
$1,553 USD
View
B+
Retailer 11
-
$2,516 AUD
$1,763 USD
View
B+
Retailer 12
-
$2,610 AUD
£1,440 GBP
View
B+
Retailer 13
-
$2,626 AUD
£1,449 GBP
View
Most Expensive
B
Brilliant Earth
13160590A · Nov 2
$3,995 AUD
$2,800 USD
View
13 more retailers have this diamond
Prices start from $606 AUDSave up to $3,389 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
3.15ct Cushion
$606 AUD