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Cushion|Lab Grown|IGI

3.50ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG852654640

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

Certificate IGI LG852654640

Diamond specifications and retailer prices

From $1,561 NZD
$880 USD
As of November 1, 2026
Save $3,306 NZD (68%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,867 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG852654640 or 852654640. Listed at 6 retailers as of November 1, 2026, with prices from $1,561 to $4,867, a $3,306 spread on the same certified stone. MOH London lists it at $4,867. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle41.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG852654640
Dimensions8.79 × 7.99 × 5.73 mm
L/W Ratio1.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.79 mm7.99 mm3.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG852654640
Side View
Table 74.0%Crown 43.2°Girdle: STK-THKPavilion 41.7°Culet: NoneDepth 71.7%

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: Nov 1
Current: $4,867 NZD|Low: $1,561 NZD|High: $4,867 NZD|Avg: $2,711 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 5$1,561 NZD
Retailer 2$1,809 NZD
Retailer 3$1,828 NZD
Retailer 4$3,087 NZD
Retailer 6$3,788 NZD
MOH London$4,867 NZD

3 data points across 6 retailers

6 retailers$1,561 NZD to $4,867 NZD

B+
Cheapest Retailer
-
$1,561 NZD
$880 USD
A
Retailer 2
-
$1,809 NZD
£803 GBP
View
A
Retailer 3
-
$1,828 NZD
$1,030 USD
View
B+
Retailer 4
-
$3,087 NZD
$1,740 USD
View
B
Retailer 5
-
$3,788 NZD
$2,135 USD
View
Most Expensive
B
MOH London
LG852654640 · Nov 1
$4,867 NZD
£2,160 GBP
View
5 more retailers have this diamond
Prices start from $1,561 NZDSave up to $3,306 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
$1,561 NZD