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Heart|Natural|HRD

3.12ct J SI2 Heart Natural Diamond

EX • J/SI2 • HRD 260000124029

Certificate HRD 260000124029

Diamond specifications and retailer prices

From $17,210 AUD
As of November 1, 2026
Save $6,778 AUD (28%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $23,988 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 3.12ct natural heart diamond

This 3.12ct natural heart sits in the three to five carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 260000124029. Listed at 4 retailers as of November 1, 2026, with prices from $17,210 to $23,988, a $6,778 spread on the same certified stone. NZ Jewellers lists it at $23,988. 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

3.12
Carat
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.87°
Pavilion angle41.27°
OriginNatural
Grading LabHRD
CertificateHRD 260000124029
Dimensions9.25 × 10.33 × 5.89 mm
L/W Ratio1.12
Girdle conditionMedium
Top View
9.25 mm10.33 mm3.12 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000124029
Side View
Table 60.0%Crown 33.87°GirdlePavilion 41.27°Culet: NoneDepth 57.1%

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: Nov 1
Current: $23,988 AUD|Low: $15,202 AUD|High: $24,385 AUD|Avg: $19,504 AUD|-1.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 5$15,202 AUD
Retailer 3$17,210 AUD
Retailer 4$17,475 AUD
Retailer 2$22,477 AUD
NZ Jewellers$23,988 AUD

17 data points across 5 retailers

4 retailers$17,210 AUD to $23,988 AUD

A
Cheapest Retailer
-
$17,210 AUD
A
Retailer 2
-
$17,475 AUD
View
B+
Retailer 3
-
$22,477 AUD
View
Most Expensive
B+
NZ Jewellers
e36d095d-af91-436e-8e9e-6040ff55f08a · Nov 3
$23,988 AUD
$16,482 USD
View
3 more retailers have this diamond
Prices start from $17,210 AUDSave up to $6,778 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
3.12ct Heart
$17,210 AUD