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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 $493 NZD
$278 USD
As of November 1, 2026
Save $1,695 NZD (77%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $2,188 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 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 November 1, 2026, with prices from $493 to $2,188, a $1,695 spread on the same certified stone. MOH London lists it at $2,188. 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

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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 1
Current: $2,188 NZD|Low: $351 NZD|High: $2,289 NZD|Avg: $1,235 NZD
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 1, 2026
Retailer 3$493 NZD
Retailer 10$546 NZD
Retailer 2$608 NZD
Retailer 12$736 NZD
Retailer 4$894 NZD
Retailer 7$980 NZD
Retailer 13$988 NZD
Retailer 6$1,029 NZD
Retailer 9$1,372 NZD
Retailer 11$1,828 NZD
Retailer 5$1,847 NZD
Retailer 8$2,005 NZD
MOH London$2,188 NZD

43 data points across 13 retailers

13 retailers$493 NZD to $2,188 NZD

A
Cheapest Retailer
-
$493 NZD
$278 USD
Final sale: no returns
Retailer 2
-
$546 NZD
$308 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$608 NZD
£270 GBP
View
B
Retailer 4
-
$736 NZD
$415 USD
View
B+
Retailer 5
-
$894 NZD
$504 USD
View
B+
Retailer 6
-
$980 NZD
€526 EUR
View
B+
Retailer 7
-
$988 NZD
$557 USD
View
B+
Retailer 8
-
$1,029 NZD
£457 GBP
View
B
Retailer 9
-
$1,372 NZD
$773 USD
View
B
Retailer 10
-
$1,828 NZD
$1,030 USD
View
B
Retailer 11
-
$1,847 NZD
$1,041 USD
View
B
Retailer 12
-
$2,005 NZD
$1,130 USD
View
Most Expensive
B
MOH London
LG529262305 · Nov 1
$2,188 NZD
£971 GBP
View
12 more retailers have this diamond
Prices start from $493 NZDSave up to $1,695 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
$493 NZD