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Oval|Natural|HRD

1.51ct I SI2 Oval Natural Diamond

ID • I/SI2 • HRD 260000139598

Certificate HRD 260000139598

Diamond specifications and retailer prices

From $3,148 AUD
As of November 6, 2026
Save $5,269 AUD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,417 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded I 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 260000139598. Listed at 14 retailers as of November 5, 2026, with prices from $3,148 to $8,417, a $5,269 spread on the same certified stone. NZ Jewellers lists it at $8,417. 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
I
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000139598
Dimensions9.09 × 6.30 × 4.02 mm
L/W Ratio1.44
Top View
9.09 mm6.30 mm1.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateHRD 260000139598
Side View
Table 57.0%CrownGirdle: MediumPavilionCulet: NoneDepth 63.9%

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 6
Current: $8,417 AUD|Low: $3,148 AUD|High: $8,417 AUD|Avg: $4,568 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
Retailer 14
November 6, 2026
Retailer 7$3,148 AUD
Retailer 11$3,660 AUD
Retailer 13$3,711 AUD
Retailer 5$3,717 AUD
Retailer 12$3,931 AUD
Retailer 9$4,026 AUD
Retailer 14$4,026 AUD
Retailer 3$4,181 AUD
Retailer 6$4,231 AUD
Retailer 2$4,308 AUD
Retailer 4$4,646 AUD
Retailer 8$4,688 AUD
Retailer 10$7,034 AUD
NZ Jewellers$8,417 AUD

38 data points across 14 retailers

14 retailers$3,148 AUD to $8,417 AUD

A
Cheapest Retailer
-
$3,148 AUD
A
Retailer 2
-
$3,660 AUD
View
A
Retailer 3
-
$3,711 AUD
View
A
Retailer 4
-
$3,717 AUD
View
Final sale: no returns
A
Retailer 5
-
$3,931 AUD
View
Retailer 6
-
$4,026 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$4,026 AUD
View
A
Retailer 8
-
$4,181 AUD
View
A
Retailer 9
-
$4,231 AUD
View
A
Retailer 10
-
$4,308 AUD
View
A
Retailer 11
-
$4,646 AUD
View
A
Retailer 12
-
$4,688 AUD
View
A
Retailer 13
-
$7,034 AUD
View
Most Expensive
B+
NZ Jewellers
b02110e8-cfc0-4c39-b929-5c38352b10bf · Nov 5
$8,417 AUD
$5,783 USD
View
13 more retailers have this diamond
Prices start from $3,148 AUDSave up to $5,269 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 Oval
$3,148 AUD