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Cushion|Lab Grown|IGI

3.09ct D VVS1 Cushion Lab Grown Diamond

ID • D/VVS1 • IGI LG677521457

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG677521457

Diamond specifications and retailer prices

From $1,638 NZD
$923 USD
As of October 31, 2026
Save $14,650 NZD (90%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $16,288 NZD 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 D colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG677521457 or 677521457. Listed at 20 retailers as of October 26, 2026, with prices from $1,638 to $16,288, a $14,650 spread on the same certified stone. Brilliant Earth lists it at $16,288. 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
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677521457
Dimensions9.92 × 7.79 × 5.17 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.92 mm7.79 mm3.09 ctD / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677521457
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 66.4%

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 31
Current: $16,288 NZD|Low: $1,638 NZD|High: $16,288 NZD|Avg: $4,811 NZD
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
October 31, 2026
Retailer 15$1,638 NZD
Retailer 17$2,058 NZD
Retailer 9$2,221 NZD
Retailer 11$2,407 NZD
Retailer 3$2,409 NZD
Retailer 5$2,830 NZD
Retailer 6$2,878 NZD
Retailer 16$2,885 NZD
Retailer 2$3,003 NZD
Retailer 14$4,231 NZD
Retailer 18$4,351 NZD
Retailer 4$4,825 NZD
Retailer 8$5,605 NZD
Retailer 20$6,388 NZD
Retailer 12$6,680 NZD
Retailer 10$6,997 NZD
Retailer 19$7,071 NZD
Retailer 13$7,142 NZD
Retailer 7$12,988 NZD
Brilliant Earth$16,288 NZD

33 data points across 20 retailers

20 retailers$1,638 NZD to $16,288 NZD

A
Cheapest Retailer
-
$1,638 NZD
$923 USD
Final sale: no returns
A
Retailer 2
-
$2,058 NZD
$1,160 USD
View
A
Retailer 3
-
$2,221 NZD
$1,252 USD
View
A
Retailer 4
-
$2,407 NZD
HK$10,600 HKD
View
Retailer 5
-
$2,409 NZD
£1,069 GBP
View
Price last confirmed 15 days ago
A
Retailer 6
-
$2,830 NZD
$1,595 USD
View
A
Retailer 7
-
$2,878 NZD
$1,622 USD
View
A
Retailer 8
-
$2,885 NZD
£1,280 GBP
View
A
Retailer 9
-
$3,003 NZD
€1,612 EUR
View
B+
Retailer 10
-
$4,231 NZD
A$3,669 AUD
View
B+
Retailer 11
-
$4,351 NZD
ZAR 39,614 ZAR
View
B+
Retailer 12
-
$4,825 NZD
$2,719 USD
View
B+
Retailer 13
-
$5,605 NZD
$3,159 USD
View
B+
Retailer 14
-
$6,388 NZD
£2,835 GBP
View
B
Retailer 15
-
$6,680 NZD
$3,765 USD
View
B
Retailer 16
-
$6,997 NZD
SGD 5,329 SGD
View
Retailer 17
-
$7,071 NZD
$3,985 USD
View
Price last confirmed 11 days ago
B+
Retailer 18
-
$7,142 NZD
A$6,193 AUD
View
B
Retailer 19
-
$12,988 NZD
$7,320 USD
View
Most Expensive
B
Brilliant Earth
13509142Y · Oct 26
$16,288 NZD
$9,180 USD
View
19 more retailers have this diamond
Prices start from $1,638 NZDSave up to $14,650 NZD

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
$1,638 NZD