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Heart|Natural|HRD

1.51ct E SI2 Heart Natural Diamond

ID • E/SI2 • HRD 250000277812

Certificate HRD 250000277812

Diamond specifications and retailer prices

From $4,849 AUD
SGD 4,603 SGD
As of October 29, 2026
Save $5,278 AUD (52%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $10,127 AUD at NZ Jewellers · As of October 27, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 250000277812. Listed at 10 retailers as of October 27, 2026, with prices from $4,849 to $10,127, a $5,278 spread on the same certified stone. NZ Jewellers lists it at $10,127. 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
E
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.4°
Pavilion angle38.3°
OriginNatural
Grading LabHRD
CertificateHRD 250000277812
Dimensions7.17 × 7.91 × 4.48 mm
L/W Ratio1.10
Culet sizePointed
Top View
7.17 mm7.91 mm1.51 ctE / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 250000277812
Side View
Table 57.0%Crown 37.4°Girdle: MediumPavilion 38.3°Culet: NoneDepth 56.6%

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 29
Current: $9,774 AUD|Low: $4,849 AUD|High: $9,839 AUD|Avg: $6,095 AUD|+0.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2$4,849 AUD
Retailer 5$5,115 AUD
Retailer 6$5,192 AUD
Retailer 3$5,364 AUD
Retailer 4$5,813 AUD
Retailer 7$6,023 AUD
Retailer 8$6,669 AUD
Retailer 1$9,774 AUD

15 data points across 8 retailers

10 retailers$4,849 AUD to $10,127 AUD

A
Cheapest Retailer
-
$4,849 AUD
SGD 4,603 SGD
A
Retailer 2
-
$5,115 AUD
$3,593 USD
View
A
Retailer 3
-
$5,364 AUD
$3,768 USD
View
Final sale: no returns
A
Retailer 4
-
$5,813 AUD
$4,083 USD
View
A
Retailer 5
-
$5,813 AUD
$4,083 USD
View
A
Retailer 6
-
$5,813 AUD
$4,083 USD
View
A
Retailer 7
-
$6,023 AUD
$4,231 USD
View
A
Retailer 8
-
$6,707 AUD
$4,711 USD
View
B+
Retailer 9
-
$9,774 AUD
£5,406 GBP
View
Most Expensive
B+
NZ Jewellers
cce9ac9e-a0f4-4a85-a553-45cdb7beb607 · Oct 27
$10,127 AUD
$7,114 USD
View
9 more retailers have this diamond
Prices start from $4,849 AUDSave up to $5,278 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
$4,849 AUD