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Cushion|Lab Grown|IGI

1.50ct D SI1 Cushion Lab Grown Diamond

GD • D/SI1 • IGI LG529262305

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG529262305

Diamond specifications and retailer prices

From $396 AUD
$278 USD
As of October 30, 2026
Save $1,369 AUD (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $1,765 AUD at MOH London · As of October 29, 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG529262305 or 529262305. Listed at 13 retailers as of October 29, 2026, with prices from $396 to $1,765, a $1,369 spread on the same certified stone. MOH London lists it at $1,765. 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
D
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529262305
Dimensions7.40 × 6.19 × 4.19 mm
L/W Ratio1.20
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
7.40 mm6.19 mm1.50 ctD / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529262305
Side View
Table 58.0%Crown 37.4°Girdle: MED-STKPavilion 37.8°Culet: NoneDepth 67.7%

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: Oct 30
Current: $1,765 AUD|Low: $282 AUD|High: $1,836 AUD|Avg: $981 AUD|+0.5%
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
October 31, 2026
Retailer 3$396 AUD
Retailer 10$438 AUD
Retailer 8$489 AUD
Retailer 12$591 AUD
Retailer 4$717 AUD
Retailer 2$786 AUD
Retailer 13$793 AUD
Retailer 6$826 AUD
Retailer 9$1,100 AUD
Retailer 11$1,466 AUD
Retailer 5$1,482 AUD
Retailer 7$1,609 AUD
MOH London$1,765 AUD

43 data points across 13 retailers

13 retailers$396 AUD to $1,765 AUD

A
Cheapest Retailer
-
$396 AUD
$278 USD
Final sale: no returns
B+
Retailer 2
-
$438 AUD
$308 USD
View
A
Retailer 3
-
$489 AUD
£270 GBP
View
B
Retailer 4
-
$591 AUD
$415 USD
View
B+
Retailer 5
-
$717 AUD
$504 USD
View
B+
Retailer 6
-
$786 AUD
€526 EUR
View
B+
Retailer 7
-
$793 AUD
$557 USD
View
B+
Retailer 8
-
$826 AUD
£457 GBP
View
B
Retailer 9
-
$1,100 AUD
$773 USD
View
Retailer 10
-
$1,466 AUD
$1,030 USD
View
Price last confirmed 10 days ago
B
Retailer 11
-
$1,482 AUD
$1,041 USD
View
B
Retailer 12
-
$1,609 AUD
$1,130 USD
View
Most Expensive
B
MOH London
LG529262305 · Oct 29
$1,765 AUD
£976 GBP
View
12 more retailers have this diamond
Prices start from $396 AUDSave up to $1,369 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
$396 AUD