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Cushion|Lab Grown|IGI

3.09ct D VS1 Cushion Lab Grown Diamond

EX • D/VS1 • IGI LG689542466

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

Certificate IGI LG689542466

Diamond specifications and retailer prices

From $580 USD
As of October 29, 2026
Save $5,930 USD (91%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $6,510 USD at Brilliant Earth · As of October 28, 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 D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG689542466 or 689542466. Listed at 20 retailers as of October 28, 2026, with prices from $580 to $6,510, a $5,930 spread on the same certified stone. Brilliant Earth lists it at $6,510. 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
D
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG689542466
Dimensions8.24 × 8.24 × 5.65 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.24 mm8.24 mm3.09 ctD / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG689542466
Side View
Table 65.0%Crown 37.4°Girdle: MED-THKPavilion 40.8°Culet: NoneDepth 68.6%

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: Oct 29
Current: $6,510 USD|Low: $568 USD|High: $6,510 USD|Avg: $1,705 USD
Brilliant Earth
Retailer 2
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Retailer 20
October 29, 2026
Retailer 20$580 USD
Retailer 11$630 USD
Retailer 9$704 USD
Retailer 4$838 USD
Retailer 14$840 USD
Retailer 19$926 USD
Retailer 13$967 USD
Retailer 2$992 USD
Retailer 17$1,367 USD
Retailer 15$1,382 USD
Retailer 16$1,457 USD
Retailer 18$1,505 USD
Retailer 12$1,844 USD
Retailer 8$2,036 USD
Retailer 3$2,089 USD
Retailer 6$2,208 USD
Retailer 5$2,301 USD
Retailer 10$2,467 USD
Retailer 7$2,696 USD
Brilliant Earth$6,510 USD

35 data points across 20 retailers

20 retailers$580 USD to $6,510 USD

A
Cheapest Retailer
-
$580 USD
Final sale: no returns
A
Retailer 2
-
$630 USD
View
Price last confirmed 18 days ago
A
Retailer 3
-
$704 USD
HK$5,500 HKD
View
B+
Retailer 4
-
$838 USD
View
A
Retailer 5
-
$840 USD
View
A
Retailer 6
-
$926 USD
View
A
Retailer 7
-
$967 USD
€921 EUR
View
A
Retailer 8
-
$992 USD
£781 GBP
View
A
Retailer 9
-
$1,367 USD
A$2,103 AUD
View
Price last confirmed 9 days ago
A
Retailer 10
-
$1,382 USD
ZAR 22,328 ZAR
View
A
Retailer 11
-
$1,457 USD
View
A
Retailer 12
-
$1,505 USD
View
B+
Retailer 13
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$1,844 USD
£1,452 GBP
View
Price last confirmed 16 days ago
B+
Retailer 14
-
$2,036 USD
SGD 2,751 SGD
View
B+
Retailer 15
-
$2,089 USD
View
B+
Retailer 16
-
$2,208 USD
View
B+
Retailer 17
-
$2,301 USD
View
B+
Retailer 18
-
$2,467 USD
A$3,795 AUD
View
Price last confirmed 21 days ago
B+
Retailer 19
-
$2,696 USD
£2,123 GBP
View
Most Expensive
B
Brilliant Earth
20259914A · Oct 28
$6,510 USD
View
19 more retailers have this diamond
Prices start from $580 USDSave up to $5,930 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
$580 USD