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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 $5,087 AUD
As of November 6, 2026
Save $4,986 AUD (50%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,073 AUD 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 $5,087 to $10,073, a $4,986 spread on the same certified stone. NZ Jewellers lists it at $10,073. 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: $10,073 AUD|Low: $5,335 AUD|High: $10,073 AUD|Avg: $6,970 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 7, 2026
Retailer 8$5,335 AUD
Retailer 3$5,532 AUD
Retailer 9$5,781 AUD
Retailer 2$5,964 AUD
Retailer 4$6,530 AUD
Retailer 10$6,670 AUD
Retailer 7$6,856 AUD
Retailer 5$7,056 AUD
Retailer 6$9,668 AUD
NZ Jewellers$10,073 AUD

31 data points across 10 retailers

17 retailers$5,087 AUD to $10,073 AUD

B+
Cheapest Retailer
-
$5,087 AUD
B+
Retailer 2
-
$5,202 AUD
View
B+
Retailer 3
-
$5,335 AUD
View
Final sale: no returns
B+
Retailer 4
-
$5,516 AUD
View
B+
Retailer 5
-
$5,532 AUD
View
B+
Retailer 6
-
$5,692 AUD
View
B+
Retailer 7
-
$5,781 AUD
View
B+
Retailer 8
-
$5,781 AUD
View
Retailer 9
-
$5,781 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$5,964 AUD
View
B
Retailer 11
-
$5,995 AUD
View
B
Retailer 12
-
$6,530 AUD
View
B
Retailer 13
-
$6,670 AUD
View
B
Retailer 14
-
$7,056 AUD
View
B
Retailer 15
-
$8,585 AUD
View
B
Retailer 16
-
$9,668 AUD
View
Most Expensive
C
NZ Jewellers
0ada1b4f-21ab-4fcf-8be3-23a729e1c4a5 · Nov 5
$10,073 AUD
$6,921 USD
View
16 more retailers have this diamond
Prices start from $5,087 AUDSave up to $4,986 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.

B+
1.51ct Heart
$5,087 AUD