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Heart|Natural|HRD

1.51ct J SI1 Heart Natural Diamond

EX • J/SI1 • HRD 260000002109

Certificate HRD 260000002109

Diamond specifications and retailer prices

From $5,226 AUD
As of November 6, 2026
Save $5,123 AUD (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $10,349 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 top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000002109. Listed at 13 retailers as of November 5, 2026, with prices from $5,226 to $10,349, a $5,123 spread on the same certified stone. NZ Jewellers lists it at $10,349. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.25°
Pavilion angle40.11°
OriginNatural
Grading LabHRD
CertificateHRD 260000002109
Dimensions7.27 × 8.09 × 4.57 mm
L/W Ratio1.11
Girdle conditionThin
Top View
7.27 mm8.09 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateHRD 260000002109
Side View
Table 60.0%Crown 37.25°Girdle: ThinPavilion 40.11°Culet: NoneDepth 56.5%

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: $10,349 AUD|Low: $5,025 AUD|High: $10,349 AUD|Avg: $6,962 AUD
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 7, 2026
Retailer 11$5,226 AUD
Retailer 3$5,335 AUD
Retailer 9$5,482 AUD
Retailer 4$5,941 AUD
Retailer 5$5,941 AUD
Retailer 10$5,941 AUD
Retailer 2$6,092 AUD
Retailer 6$6,487 AUD
Retailer 12$6,855 AUD
Retailer 8$7,043 AUD
Retailer 13$8,818 AUD
Retailer 7$9,908 AUD
NZ Jewellers$10,349 AUD

39 data points across 13 retailers

13 retailers$5,226 AUD to $10,349 AUD

B+
Cheapest Retailer
-
$5,226 AUD
B+
Retailer 2
-
$5,335 AUD
View
B+
Retailer 3
-
$5,482 AUD
View
Final sale: no returns
B+
Retailer 4
-
$5,941 AUD
View
B+
Retailer 5
-
$5,941 AUD
View
Retailer 6
-
$5,941 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$6,092 AUD
View
B+
Retailer 8
-
$6,155 AUD
View
B
Retailer 9
-
$6,487 AUD
View
B
Retailer 10
-
$6,855 AUD
View
B
Retailer 11
-
$8,818 AUD
View
B
Retailer 12
-
$9,908 AUD
View
Most Expensive
B
NZ Jewellers
905d1090-dd03-421e-8b5a-6a57d51b2cb1 · Nov 5
$10,349 AUD
$7,111 USD
View
12 more retailers have this diamond
Prices start from $5,226 AUDSave up to $5,123 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
$5,226 AUD