Heart|Lab Grown|IGI

1.51ct H SI1 Heart Lab Grown Diamond

ID • H/SI1 • IGI LG733547577

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG733547577

Diamond specifications and retailer prices

From $796 NZD
€427 EUR
As of October 31, 2026
Save $1,120 NZD (58%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,915 NZD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown heart diamond

This 1.51ct lab-grown heart sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG733547577 or 733547577. Listed at 5 retailers as of October 31, 2026, with prices from $796 to $1,915, a $1,120 spread on the same certified stone. MOH London lists it at $1,915. 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
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG733547577
Dimensions7.77 × 7.17 × 4.73 mm
L/W Ratio1.08
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.77 mm7.17 mm1.51 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG733547577
Side View
Table 54.0%Crown 35°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 60.9%

Caratlytics Score

How it works →
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: Oct 31
Current: $1,915 NZD|Low: $692 NZD|High: $1,936 NZD|Avg: $1,037 NZD|+1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 2$796 NZD
Retailer 4$820 NZD
Retailer 5$823 NZD
Retailer 3$1,061 NZD
MOH London$1,915 NZD

16 data points across 5 retailers

5 retailers$796 NZD to $1,915 NZD

A
Cheapest Retailer
-
$796 NZD
€427 EUR
A
Retailer 2
-
$820 NZD
$462 USD
View
A
Retailer 3
-
$823 NZD
$464 USD
View
B+
Retailer 4
-
$1,061 NZD
$598 USD
View
Most Expensive
B+
MOH London
LG733547577 · Nov 1
$1,915 NZD
£850 GBP
View
4 more retailers have this diamond
Prices start from $796 NZDSave up to $1,120 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 Heart
$796 NZD