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 $541 USD
£426 GBP
As of November 1, 2026
Save $2,209 USD (80%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,750 USD at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from $541 to $2,750, a $2,209 spread on the same certified stone. Brilliant Earth lists it at $2,750. 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
Color
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

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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: $2,750 USD|Low: $503 USD|High: $2,750 USD|Avg: $1,293 USD
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 1, 2026
Retailer 6$503 USD
Retailer 8$541 USD
Retailer 15$635 USD
Retailer 12$652 USD
Retailer 9$791 USD
Retailer 10$794 USD
Retailer 3$1,024 USD
Retailer 13$1,065 USD
Retailer 4$1,092 USD
Retailer 14$1,600 USD
Retailer 11$1,701 USD
Retailer 2$1,900 USD
Retailer 7$2,012 USD
Retailer 5$2,100 USD
Brilliant Earth$2,750 USD

26 data points across 15 retailers

15 retailers$541 USD to $2,750 USD

Retailer 1
-
$503 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$541 USD
£426 GBP
View
A
Retailer 3
-
$635 USD
View
B+
Retailer 4
-
$652 USD
View
A
Retailer 5
-
$791 USD
£623 GBP
View
A
Retailer 6
-
$794 USD
€756 EUR
View
A
Retailer 7
-
$1,024 USD
A$1,575 AUD
View
A
Retailer 8
-
$1,065 USD
View
A
Retailer 9
-
$1,092 USD
ZAR 17,647 ZAR
View
B+
Retailer 10
-
$1,600 USD
View
B+
Retailer 11
-
$1,701 USD
View
B+
Retailer 12
-
$1,900 USD
£1,496 GBP
View
Retailer 13
-
$2,012 USD
SGD 2,719 SGD
View
Price last confirmed 24 days ago
Retailer 14
-
$2,100 USD
View
Price last confirmed 13 days ago
Most Expensive
B
Brilliant Earth
21721451A · Oct 31
$2,750 USD
View
14 more retailers have this diamond
Prices start from $541 USDSave up to $2,209 USD

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
$541 USD