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Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG492129101

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG492129101

Diamond specifications and retailer prices

From $568 NZD
As of November 6, 2026
Save $3,942 NZD (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $4,510 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG492129101 or 492129101. Listed at 13 retailers as of November 6, 2026, with prices from $568 to $4,510, a $3,942 spread on the same certified stone. Do Amore Diamonds lists it at $4,510. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.3°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG492129101
Dimensions7.22 × 6.40 × 4.20 mm
L/W Ratio1.13
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
7.22 mm6.40 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG492129101
Side View
Table 61.5%Crown 32.3°Girdle: Slightly ThickPavilion 39.4°Culet: NoneDepth 65.6%

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: Nov 6
Current: $4,510 NZD|Low: $491 NZD|High: $4,510 NZD|Avg: $1,719 NZD
Do Amore Diamonds
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 4$568 NZD
Retailer 11$664 NZD
Retailer 12$844 NZD
Retailer 13$911 NZD
Retailer 7$1,227 NZD
Retailer 10$1,236 NZD
Retailer 2$1,394 NZD
Retailer 9$1,946 NZD
Retailer 3$2,531 NZD
Retailer 6$2,720 NZD
Retailer 8$2,780 NZD
Retailer 5$3,139 NZD
Do Amore Diamonds$4,510 NZD

43 data points across 13 retailers

13 retailers$568 NZD to $4,510 NZD

A
Cheapest Retailer
-
$568 NZD
Final sale: no returns
A
Retailer 2
-
$664 NZD
View
A
Retailer 3
-
$844 NZD
View
A
Retailer 4
-
$911 NZD
View
B+
Retailer 5
-
$1,227 NZD
View
B+
Retailer 6
-
$1,236 NZD
View
B+
Retailer 7
-
$1,394 NZD
View
B
Retailer 8
-
$1,741 NZD
View
B
Retailer 9
-
$1,946 NZD
View
B
Retailer 10
-
$2,531 NZD
View
B
Retailer 11
-
$2,720 NZD
View
B
Retailer 12
-
$2,780 NZD
View
Most Expensive
B
Do Amore Diamonds
27-2F026FEA7 · Nov 6
$4,510 NZD
$2,500 USD
View
12 more retailers have this diamond
Prices start from $568 NZDSave up to $3,942 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
$568 NZD