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Cushion|Lab Grown|IGI

3.51ct E VVS1 Cushion Lab Grown Diamond

VG • E/VVS1 • IGI LG657420515

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG657420515

Diamond specifications and retailer prices

From $1,813 NZD
$1,022 USD
As of October 31, 2026
Save $9,276 NZD (84%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $11,089 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG657420515 or 657420515. Listed at 22 retailers as of October 31, 2026, with prices from $1,813 to $11,089, a $9,276 spread on the same certified stone. Brilliant Earth lists it at $11,089. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

3.51
Carat
E
Colour
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG657420515
Dimensions10.66 × 7.12 × 5.01 mm
L/W Ratio1.50
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.66 mm7.12 mm3.51 ctE / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG657420515
Side View
Table 69.0%Crown 45°Girdle: MED-THKPavilion 35.5°Culet: NoneDepth 70.4%

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: Oct 31
Current: $11,089 NZD|Low: $1,813 NZD|High: $15,969 NZD|Avg: $4,905 NZD|-30.6%
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
Retailer 21
October 31, 2026
Retailer 5$1,813 NZD
Retailer 4$1,879 NZD
Retailer 20$2,180 NZD
Retailer 3$2,262 NZD
Retailer 7$2,394 NZD
Retailer 18$2,688 NZD
Retailer 15$2,893 NZD
Retailer 2$2,988 NZD
Retailer 16$3,714 NZD
Retailer 11$4,290 NZD
Retailer 17$4,362 NZD
Retailer 9$4,576 NZD
Retailer 14$5,192 NZD
Retailer 19$5,577 NZD
Retailer 6$6,153 NZD
Retailer 8$6,305 NZD
Retailer 21$6,404 NZD
Retailer 10$6,529 NZD
Retailer 12$6,767 NZD
Retailer 13$7,434 NZD
Brilliant Earth$11,089 NZD

33 data points across 21 retailers

22 retailers$1,813 NZD to $11,089 NZD

A
Cheapest Retailer
-
$1,813 NZD
$1,022 USD
Final sale: no returns
Retailer 2
-
$1,879 NZD
$1,059 USD
View
Price last confirmed 14 days ago
A
Retailer 3
-
$2,180 NZD
HK$9,600 HKD
View
A
Retailer 4
-
$2,262 NZD
$1,275 USD
View
A
Retailer 5
-
$2,394 NZD
$1,349 USD
View
A
Retailer 6
-
$2,688 NZD
$1,515 USD
View
A
Retailer 7
-
$2,893 NZD
£1,284 GBP
View
A
Retailer 8
-
$2,988 NZD
€1,604 EUR
View
B+
Retailer 9
-
$3,714 NZD
$2,093 USD
View
B+
Retailer 10
-
$4,290 NZD
$2,418 USD
View
B+
Retailer 11
-
$4,362 NZD
ZAR 39,715 ZAR
View
B+
Retailer 12
-
$4,576 NZD
$2,579 USD
View
B+
Retailer 13
-
$5,192 NZD
£2,304 GBP
View
B+
Retailer 14
-
$5,577 NZD
$3,143 USD
View
B+
Retailer 15
-
$5,876 NZD
$3,312 USD
View
B
Retailer 16
-
$6,153 NZD
$3,468 USD
View
B
Retailer 17
-
$6,305 NZD
SGD 4,802 SGD
View
B+
Retailer 18
-
$6,404 NZD
£2,842 GBP
View
B
Retailer 19
-
$6,529 NZD
$3,680 USD
View
B
Retailer 20
-
$6,758 NZD
$3,809 USD
View
B
Retailer 21
-
$7,434 NZD
A$6,446 AUD
View
Most Expensive
B
Brilliant Earth
11858242A · Oct 31
$11,089 NZD
$6,250 USD
View
21 more retailers have this diamond
Prices start from $1,813 NZDSave up to $9,276 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
3.51ct Cushion
$1,813 NZD