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Cushion|Lab Grown|IGI

1.50ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG529245314

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG529245314

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)
12 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 top-tier cut grade and certified by IGI LG529245314 or 529245314. Listed at 12 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. 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

1.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529245314
Dimensions6.77 × 6.56 × 4.45 mm
L/W Ratio1.03
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
6.77 mm6.56 mm1.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529245314
Side View
Table 62.0%Crown 36.7°Girdle: MED-THKPavilion 40.5°Culet: NoneDepth 67.8%

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 30
Current: $1,765 AUD|Low: $282 AUD|High: $1,780 AUD|Avg: $906 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
October 31, 2026
Retailer 11$396 AUD
Retailer 9$438 AUD
Retailer 6$489 AUD
Retailer 10$591 AUD
Retailer 3$717 AUD
Retailer 7$792 AUD
Retailer 12$793 AUD
Retailer 2$826 AUD
Retailer 8$1,100 AUD
Retailer 4$1,482 AUD
Retailer 5$1,609 AUD
MOH London$1,765 AUD

42 data points across 12 retailers

12 retailers$396 AUD to $1,765 AUD

A
Cheapest Retailer
-
$396 AUD
$278 USD
Final sale: no returns
A
Retailer 2
-
$438 AUD
$308 USD
View
A
Retailer 3
-
$489 AUD
£270 GBP
View
B+
Retailer 4
-
$591 AUD
$415 USD
View
A
Retailer 5
-
$717 AUD
$504 USD
View
B+
Retailer 6
-
$792 AUD
€530 EUR
View
B+
Retailer 7
-
$793 AUD
$557 USD
View
A
Retailer 8
-
$826 AUD
£457 GBP
View
B+
Retailer 9
-
$1,100 AUD
$773 USD
View
B
Retailer 10
-
$1,482 AUD
$1,041 USD
View
B
Retailer 11
-
$1,609 AUD
$1,130 USD
View
Most Expensive
B
MOH London
LG529245314 · Oct 29
$1,765 AUD
£976 GBP
View
11 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