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Heart|Natural|IGI

1.51ct J SI1 Heart Natural Diamond

VG • J/SI1 • IGI 749558441

Shape and cutting style on the report: Heart brilliant

Certificate IGI 749558441

Diamond specifications and retailer prices

From $6,305 NZD
As of November 6, 2026
Save $6,180 NZD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $12,485 NZD at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 749558441. Listed at 17 retailers as of November 5, 2026, with prices from $6,305 to $12,485, a $6,180 spread on the same certified stone. NZ Jewellers lists it at $12,485. 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle38.9°
OriginNatural
Grading LabIGI
CertificateIGI 749558441
Dimensions7.12 × 7.87 × 4.47 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Top View
7.12 mm7.87 mm1.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 749558441
Side View
Table 60.0%Crown 34°Girdle: MED-THKPavilion 38.9°Culet: NoneDepth 56.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $12,485 NZD|Low: $6,613 NZD|High: $12,485 NZD|Avg: $8,636 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8$6,613 NZD
Retailer 2$6,857 NZD
Retailer 9$7,165 NZD
Retailer 4$7,392 NZD
Retailer 3$8,094 NZD
Retailer 10$8,267 NZD
Retailer 7$8,498 NZD
Retailer 5$8,745 NZD
Retailer 6$11,983 NZD
NZ Jewellers$12,485 NZD

30 data points across 10 retailers

17 retailers$6,305 NZD to $12,485 NZD

B+
Cheapest Retailer
-
$6,305 NZD
B+
Retailer 2
-
$6,447 NZD
View
B+
Retailer 3
-
$6,613 NZD
View
Final sale: no returns
B+
Retailer 4
-
$6,837 NZD
View
B+
Retailer 5
-
$6,857 NZD
View
B+
Retailer 6
-
$7,055 NZD
View
B+
Retailer 7
-
$7,165 NZD
View
B+
Retailer 8
-
$7,165 NZD
View
Retailer 9
-
$7,165 NZD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$7,392 NZD
View
B
Retailer 11
-
$7,430 NZD
View
B
Retailer 12
-
$8,094 NZD
View
B
Retailer 13
-
$8,267 NZD
View
B
Retailer 14
-
$8,745 NZD
View
B
Retailer 15
-
$10,641 NZD
View
B
Retailer 16
-
$11,983 NZD
View
Most Expensive
C
NZ Jewellers
0ada1b4f-21ab-4fcf-8be3-23a729e1c4a5 · Nov 5
$12,485 NZD
$6,921 USD
View
16 more retailers have this diamond
Prices start from $6,305 NZDSave up to $6,180 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+
1.51ct Heart
$6,305 NZD