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Heart|Lab Grown|IGI

1.50ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG837669781

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG837669781

Diamond specifications and retailer prices

From $828 NZD
As of November 6, 2026
Save $1,108 NZD (57%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $1,936 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart 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 LG837669781 or 837669781. Listed at 4 retailers as of November 1, 2026, with prices from $828 to $1,936, a $1,108 spread on the same certified stone. MOH London lists it at $1,936. 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 angle38.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837669781
Dimensions7.92 × 6.93 × 4.75 mm
L/W Ratio1.14
Girdle conditionFaceted
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
7.92 mm6.93 mm1.50 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837669781
Side View
Table 62.0%Crown 38.3°Girdle: MediumPavilion 40.4°CuletDepth 60.0%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $1,936 NZD|Low: $828 NZD|High: $1,947 NZD|Avg: $1,392 NZD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 4$828 NZD
Retailer 3$1,310 NZD
Retailer 2$1,930 NZD
MOH London$1,936 NZD

9 data points across 4 retailers

4 retailers$828 NZD to $1,936 NZD

B+
Cheapest Retailer
-
$828 NZD
B
Retailer 2
-
$1,310 NZD
View
B
Retailer 3
-
$1,930 NZD
View
Most Expensive
B
MOH London
LG837669781 · Nov 1
$1,936 NZD
£845 GBP
View
3 more retailers have this diamond
Prices start from $828 NZDSave up to $1,108 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 Heart
$828 NZD