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Cushion|Lab Grown|IGI

1.51ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG537240878

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG537240878

Diamond specifications and retailer prices

From $373 NZD
As of November 6, 2026
Save $1,697 NZD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,071 NZD at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG537240878 or 537240878. Listed at 16 retailers as of November 6, 2026, with prices from $373 to $2,071, a $1,697 spread on the same certified stone. Reve Diamonds lists it at $2,071. 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

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle31.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG537240878
Dimensions7.72 × 5.99 × 3.75 mm
L/W Ratio1.29
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
7.72 mm5.99 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG537240878
Side View
Table 60.5%Crown 37.4°Girdle: MED-STKPavilion 31.3°Culet: NoneDepth 62.6%

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 6
Current: $954 NZD|Low: $373 NZD|High: $1,964 NZD|Avg: $936 NZD
Retailer 1
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$373 NZD
Retailer 2$415 NZD
Retailer 13$559 NZD
Retailer 9$684 NZD
Retailer 8$741 NZD
Retailer 5$826 NZD
Retailer 11$911 NZD
Retailer 1$954 NZD
Retailer 10$989 NZD
Retailer 3$1,017 NZD
Retailer 6$1,533 NZD
Retailer 12$1,642 NZD
Retailer 7$1,930 NZD

44 data points across 13 retailers

16 retailers$373 NZD to $2,071 NZD

A
Cheapest Retailer
-
$373 NZD
Final sale: no returns
A
Retailer 2
-
$415 NZD
View
B+
Retailer 3
-
$559 NZD
View
A
Retailer 4
-
$684 NZD
View
A
Retailer 5
-
$741 NZD
View
A
Retailer 6
-
$810 NZD
View
A
Retailer 7
-
$826 NZD
View
A
Retailer 8
-
$911 NZD
View
A
Retailer 9
-
$954 NZD
View
A
Retailer 10
-
$989 NZD
View
B+
Retailer 11
-
$1,017 NZD
View
B
Retailer 12
-
$1,432 NZD
View
B+
Retailer 13
-
$1,533 NZD
View
B
Retailer 14
-
$1,642 NZD
View
B
Retailer 15
-
$1,930 NZD
View
Most Expensive
B
Reve Diamonds
DD937C927 · Nov 6
$2,071 NZD
$1,148 USD
View
15 more retailers have this diamond
Prices start from $373 NZDSave up to $1,697 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
1.51ct Cushion
$373 NZD