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Cushion|Lab Grown|IGI

3.50ct E VVS1 Cushion Lab Grown Diamond

ID • E/VVS1 • IGI LG718501507

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG718501507

Diamond specifications and retailer prices

From $1,930 NZD
HK$8,500 HKD
As of October 30, 2026
Save $13,985 NZD (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $15,915 NZD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG718501507 or 718501507. Listed at 19 retailers as of October 26, 2026, with prices from $1,930 to $15,915, a $13,985 spread on the same certified stone. Brilliant Earth lists it at $15,915. 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

3.50
Carat
E
Colour
VVS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle29.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG718501507
Dimensions10.12 × 7.53 × 4.85 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.12 mm7.53 mm3.50 ctE / VVS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG718501507
Side View
Table 68.0%Crown 39.8°Girdle: STK-VTKPavilion 29.7°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $15,915 NZD|Low: $1,608 NZD|High: $15,915 NZD|Avg: $4,522 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 27, 2026
Retailer 6$1,666 NZD
Retailer 18$1,719 NZD
Retailer 16$1,930 NZD
Retailer 4$2,005 NZD
Retailer 9$2,223 NZD
Retailer 5$2,386 NZD
Retailer 13$2,543 NZD
Retailer 2$2,610 NZD
Retailer 20$3,481 NZD
Retailer 19$3,761 NZD
Retailer 15$3,834 NZD
Retailer 8$4,207 NZD
Retailer 7$4,597 NZD
Retailer 17$5,216 NZD
Retailer 10$5,571 NZD
Retailer 11$5,602 NZD
Retailer 12$5,768 NZD
Retailer 14$6,258 NZD
Retailer 3$7,301 NZD
Brilliant Earth$15,915 NZD

30 data points across 20 retailers

19 retailers$1,930 NZD to $15,915 NZD

Retailer 1
-
$1,666 NZD
$939 USD
Price last confirmed 19 days ago
A
Retailer 2
-
$1,930 NZD
HK$8,500 HKD
View
A
Retailer 3
-
$2,005 NZD
$1,130 USD
View
A
Retailer 4
-
$2,223 NZD
$1,253 USD
View
A
Retailer 5
-
$2,386 NZD
$1,345 USD
View
A
Retailer 6
-
$2,543 NZD
£1,129 GBP
View
Retailer 7
-
$2,607 NZD
£1,157 GBP
View
Price last confirmed 17 days ago
A
Retailer 8
-
$2,610 NZD
€1,401 EUR
View
A
Retailer 9
-
$3,481 NZD
$1,962 USD
View
Retailer 10
-
$3,761 NZD
A$3,261 AUD
View
Price last confirmed 10 days ago
Retailer 11
-
$3,834 NZD
ZAR 34,911 ZAR
View
Price last confirmed 7 days ago
B+
Retailer 12
-
$4,207 NZD
$2,371 USD
View
Retailer 13
-
$4,597 NZD
£2,040 GBP
View
Price last confirmed 18 days ago
B+
Retailer 14
-
$5,216 NZD
$2,940 USD
View
B+
Retailer 15
-
$5,571 NZD
$3,140 USD
View
B+
Retailer 16
-
$5,602 NZD
SGD 4,267 SGD
View
B+
Retailer 17
-
$5,768 NZD
$3,251 USD
View
B+
Retailer 18
-
$6,258 NZD
£2,777 GBP
View
Most Expensive
B
Brilliant Earth
15239275A · Oct 26
$15,915 NZD
$8,970 USD
View
18 more retailers have this diamond
Prices start from $1,930 NZDSave up to $13,985 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
3.50ct Cushion
$1,930 NZD