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Heart|Natural|HRD

1.03ct K SI1 Heart Natural Diamond

EX • K/SI1 • HRD 250000289418

Certificate HRD 250000289418

Diamond specifications and retailer prices

From $1,615 AUD
As of November 5, 2026
Save $2,409 AUD (60%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,024 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.03ct natural heart diamond

This 1.03ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by HRD 250000289418. Listed at 6 retailers as of November 3, 2026, with prices from $1,615 to $4,024, a $2,409 spread on the same certified stone. NZ Jewellers lists it at $4,024. 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

1.03
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.99°
Pavilion angle42.11°
OriginNatural
Grading LabHRD
CertificateHRD 250000289418
Dimensions6.04 × 6.69 × 4.28 mm
L/W Ratio1.11
Girdle conditionThick
Top View
6.04 mm6.69 mm1.03 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 250000289418
Side View
Table 64.0%Crown 38.99°GirdlePavilion 42.11°CuletDepth 64.0%

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 5
Current: $4,024 AUD|Low: $1,535 AUD|High: $4,088 AUD|Avg: $2,301 AUD|-1.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$1,615 AUD
Retailer 2$1,617 AUD
Retailer 6$1,650 AUD
Retailer 4$1,713 AUD
Retailer 3$3,021 AUD
NZ Jewellers$4,024 AUD

41 data points across 6 retailers

6 retailers$1,615 AUD to $4,024 AUD

A
Cheapest Retailer
-
$1,615 AUD
A
Retailer 2
-
$1,617 AUD
View
A
Retailer 3
-
$1,650 AUD
View
A
Retailer 4
-
$1,713 AUD
View
B
Retailer 5
-
$3,021 AUD
View
Most Expensive
B
NZ Jewellers
2c079ed0-89f1-42bb-b15c-d37b2b95e63d · Nov 3
$4,024 AUD
$2,765 USD
View
5 more retailers have this diamond
Prices start from $1,615 AUDSave up to $2,409 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
1.03ct Heart
$1,615 AUD