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Heart|Natural|IGI

1.51ct J SI2 Heart Natural Diamond

VG • J/SI2 • IGI 737595032

Shape and cutting style on the report: Heart brilliant

Certificate IGI 737595032

Diamond specifications and retailer prices

From $3,371 AUD
$2,368 USD
As of October 31, 2026
Save $4,497 AUD (57%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,868 AUD at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 737595032. Listed at 12 retailers as of October 30, 2026, with prices from $3,371 to $7,868, a $4,497 spread on the same certified stone. NZ Jewellers lists it at $7,868. 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

1.51
Carat
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.6°
Pavilion angle42.4°
OriginNatural
Grading LabIGI
CertificateIGI 737595032
Dimensions6.83 × 8.02 × 4.89 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Top View
6.83 mm8.02 mm1.51 ctJ / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 737595032
Side View
Table 58.0%Crown 35.6°Girdle: STK-THKPavilion 42.4°Culet: NoneDepth 61.0%

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: Oct 31
Current: $7,868 AUD|Low: $3,281 AUD|High: $8,110 AUD|Avg: $4,500 AUD|-3.0%
NZ Jewellers
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 2, 2026
Retailer 9$3,371 AUD
Retailer 12$3,474 AUD
Retailer 8$3,657 AUD
Retailer 2$3,721 AUD
Retailer 4$3,879 AUD
Retailer 13$3,879 AUD
Retailer 6$3,964 AUD
Retailer 10$3,965 AUD
Retailer 3$4,029 AUD
Retailer 11$4,342 AUD
Retailer 5$4,616 AUD
Retailer 7$6,594 AUD
NZ Jewellers$7,868 AUD

46 data points across 13 retailers

12 retailers$3,371 AUD to $7,868 AUD

A
Cheapest Retailer
-
$3,371 AUD
$2,368 USD
A
Retailer 2
-
$3,474 AUD
$2,440 USD
View
Final sale: no returns
B+
Retailer 3
-
$3,657 AUD
$2,569 USD
View
A
Retailer 4
-
$3,721 AUD
£2,058 GBP
View
B+
Retailer 5
-
$3,879 AUD
$2,725 USD
View
B+
Retailer 6
-
$3,879 AUD
$2,725 USD
View
B+
Retailer 7
-
$3,964 AUD
$2,785 USD
View
B+
Retailer 8
-
$3,965 AUD
$2,785 USD
View
B+
Retailer 9
-
$4,029 AUD
$2,830 USD
View
B+
Retailer 10
-
$4,342 AUD
$3,050 USD
View
B
Retailer 11
-
$6,594 AUD
£3,647 GBP
View
Most Expensive
B
NZ Jewellers
c0fb1cf0-8e2f-4bab-8937-feac363ca609 · Oct 30
$7,868 AUD
$5,527 USD
View
11 more retailers have this diamond
Prices start from $3,371 AUDSave up to $4,497 AUD

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
$3,371 AUD