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Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

VG • E/SI1 • IGI LG499105432

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG499105432

Diamond specifications and retailer prices

From $606 NZD
As of November 6, 2026
Save $2,081 NZD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,687 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown cushion diamond

This 1.5ct lab-grown cushion sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG499105432 or 499105432. Listed at 12 retailers as of November 1, 2026, with prices from $606 to $2,687, a $2,081 spread on the same certified stone. MOH London lists it at $2,687. 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

1.50
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499105432
Dimensions6.43 × 6.36 × 4.46 mm
L/W Ratio1.01
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
6.43 mm6.36 mm1.50 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499105432
Side View
Table 64.5%Crown 33°Girdle: Very ThickPavilion 39.5°Culet: NoneDepth 70.1%

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 6
Current: $2,687 NZD|Low: $433 NZD|High: $2,719 NZD|Avg: $1,269 NZD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 12$606 NZD
Retailer 10$671 NZD
Retailer 6$859 NZD
Retailer 4$875 NZD
Retailer 3$877 NZD
Retailer 7$956 NZD
Retailer 9$1,097 NZD
Retailer 13$1,138 NZD
Retailer 5$1,209 NZD
Retailer 2$1,421 NZD
Retailer 8$1,678 NZD
Retailer 11$2,516 NZD
MOH London$2,687 NZD

41 data points across 13 retailers

12 retailers$606 NZD to $2,687 NZD

A
Cheapest Retailer
-
$606 NZD
Final sale: no returns
A
Retailer 2
-
$671 NZD
View
A
Retailer 3
-
$859 NZD
View
B+
Retailer 4
-
$875 NZD
View
Retailer 5
-
$877 NZD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$956 NZD
View
B+
Retailer 7
-
$1,097 NZD
View
B+
Retailer 8
-
$1,138 NZD
View
B
Retailer 9
-
$1,421 NZD
View
B
Retailer 10
-
$1,678 NZD
View
Retailer 11
-
$2,516 NZD
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
LG499105432 · Nov 1
$2,687 NZD
£1,173 GBP
View
11 more retailers have this diamond
Prices start from $606 NZDSave up to $2,081 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
1.50ct Cushion
$606 NZD