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Cushion|Lab Grown|IGI

1.50ct G SI1 Cushion Lab Grown Diamond

VG • G/SI1 • IGI LG557236083

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG557236083

Diamond specifications and retailer prices

From $680 NZD
As of November 6, 2026
Save $3,523 NZD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,203 NZD at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG557236083 or 557236083. Listed at 11 retailers as of November 6, 2026, with prices from $680 to $4,203, a $3,523 spread on the same certified stone. Do Amore Diamonds lists it at $4,203. 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
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG557236083
Dimensions6.50 × 6.44 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.50 mm6.44 mm1.50 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG557236083
Side View
Table 60.5%Crown 33°Girdle: THK-VTKPavilion 40.2°Culet: NoneDepth 70.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,203 NZD|Low: $429 NZD|High: $4,203 NZD|Avg: $1,489 NZD
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$543 NZD
Retailer 6$680 NZD
Retailer 2$763 NZD
Retailer 10$913 NZD
Retailer 7$1,129 NZD
Retailer 4$1,135 NZD
Retailer 11$1,488 NZD
Retailer 3$1,905 NZD
Retailer 8$2,230 NZD
Retailer 5$2,396 NZD
Do Amore Diamonds$4,203 NZD

35 data points across 11 retailers

11 retailers$680 NZD to $4,203 NZD

Retailer 1
-
$543 NZD
Price last confirmed 12 days ago
B+
Retailer 2
-
$680 NZD
View
B+
Retailer 3
-
$763 NZD
View
B+
Retailer 4
-
$913 NZD
View
B+
Retailer 5
-
$1,129 NZD
View
B+
Retailer 6
-
$1,135 NZD
View
B
Retailer 7
-
$1,488 NZD
View
B
Retailer 8
-
$1,905 NZD
View
B
Retailer 9
-
$2,230 NZD
View
C
Retailer 10
-
$2,396 NZD
View
Most Expensive
C
Do Amore Diamonds
27-8685E21B7 · Nov 6
$4,203 NZD
$2,330 USD
View
10 more retailers have this diamond
Prices start from $680 NZDSave up to $3,523 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.

B+
1.50ct Cushion
$680 NZD