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Cushion|Lab Grown|IGI

3.50ct G VS2 Cushion Lab Grown Diamond

EX • G/VS2 • IGI LG780615747

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780615747

Diamond specifications and retailer prices

From $1,312 NZD
£582 GBP
As of October 29, 2026
Save $4,366 NZD (77%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,678 NZD at Brilliant Earth · As of October 31, 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 G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG780615747 or 780615747. Listed at 10 retailers as of October 29, 2026, with prices from $1,312 to $5,678, a $4,366 spread on the same certified stone. Brilliant Earth lists it at $5,678. 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
G
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.1°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780615747
Dimensions8.78 × 8.27 × 5.23 mm
L/W Ratio1.06
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.78 mm8.27 mm3.50 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780615747
Side View
Table 66.0%Crown 32.1°Girdle: VTK-ETKPavilion 31.5°Culet: NoneDepth 63.2%

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 29
Current: $5,678 NZD|Low: $1,305 NZD|High: $5,873 NZD|Avg: $2,877 NZD|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 4$1,312 NZD
Retailer 5$1,393 NZD
Retailer 10$1,487 NZD
Retailer 3$1,784 NZD
Retailer 2$1,854 NZD
Retailer 7$2,010 NZD
Retailer 9$3,653 NZD
Retailer 8$4,281 NZD
Retailer 6$4,824 NZD
Brilliant Earth$5,678 NZD

18 data points across 10 retailers

10 retailers$1,312 NZD to $5,678 NZD

A
Cheapest Retailer
-
$1,312 NZD
£582 GBP
A
Retailer 2
-
$1,393 NZD
$785 USD
View
B+
Retailer 3
-
$1,487 NZD
$838 USD
View
A
Retailer 4
-
$1,784 NZD
£792 GBP
View
A
Retailer 5
-
$1,854 NZD
€995 EUR
View
A
Retailer 6
-
$2,010 NZD
$1,133 USD
View
B+
Retailer 7
-
$3,653 NZD
SGD 2,782 SGD
View
B
Retailer 8
-
$4,281 NZD
$2,413 USD
View
B
Retailer 9
-
$4,824 NZD
£2,141 GBP
View
Most Expensive
B
Brilliant Earth
20121743A · Oct 31
$5,678 NZD
$3,200 USD
View
9 more retailers have this diamond
Prices start from $1,312 NZDSave up to $4,366 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
$1,312 NZD