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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 $489 AUD
As of November 6, 2026
Save $1,679 AUD (77%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $2,168 AUD 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 $489 to $2,168, a $1,679 spread on the same certified stone. MOH London lists it at $2,168. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,168 AUD|Low: $349 AUD|High: $2,194 AUD|Avg: $1,024 AUD|-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$489 AUD
Retailer 10$541 AUD
Retailer 6$693 AUD
Retailer 4$706 AUD
Retailer 3$707 AUD
Retailer 7$771 AUD
Retailer 9$885 AUD
Retailer 13$918 AUD
Retailer 5$975 AUD
Retailer 2$1,147 AUD
Retailer 8$1,354 AUD
Retailer 11$2,030 AUD
MOH London$2,168 AUD

41 data points across 13 retailers

12 retailers$489 AUD to $2,168 AUD

A
Cheapest Retailer
-
$489 AUD
Final sale: no returns
A
Retailer 2
-
$541 AUD
View
A
Retailer 3
-
$693 AUD
View
B+
Retailer 4
-
$706 AUD
View
Retailer 5
-
$707 AUD
View
Price last confirmed 32 days ago
B+
Retailer 6
-
$771 AUD
View
B+
Retailer 7
-
$885 AUD
View
B+
Retailer 8
-
$918 AUD
View
B
Retailer 9
-
$1,147 AUD
View
B
Retailer 10
-
$1,354 AUD
View
Retailer 11
-
$2,030 AUD
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
LG499105432 · Nov 1
$2,168 AUD
£1,173 GBP
View
11 more retailers have this diamond
Prices start from $489 AUDSave up to $1,679 AUD

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
$489 AUD