CaratHunter
Plans
Oval|Natural|HRD

0.51ct H SI2 Oval Natural Diamond

VG • H/SI2 • HRD 260000137700

Certificate HRD 260000137700

Diamond specifications and retailer prices

From $575 AUD
As of November 6, 2026
Save $1,797 AUD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,372 AUD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 0.51ct natural oval diamond

This 0.51ct natural oval sits in the half to three-quarter carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by HRD 260000137700. Listed at 11 retailers as of November 2, 2026, with prices from $575 to $2,372, a $1,797 spread on the same certified stone. NZ Jewellers lists it at $2,372. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
H
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabHRD
CertificateHRD 260000137700
Dimensions6.65 × 4.27 × 2.70 mm
L/W Ratio1.56
Top View
6.65 mm4.27 mm0.51 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateHRD 260000137700
Side View
Table 58.0%CrownGirdle: FAC-FACPavilionCulet: NoneDepth 63.1%

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 6
Current: $2,372 AUD|Low: $522 AUD|High: $2,372 AUD|Avg: $1,022 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4$575 AUD
Retailer 9$667 AUD
Retailer 8$715 AUD
Retailer 3$780 AUD
Retailer 2$814 AUD
Retailer 7$834 AUD
Retailer 6$1,020 AUD
Retailer 5$1,426 AUD
NZ Jewellers$2,372 AUD

23 data points across 9 retailers

11 retailers$575 AUD to $2,372 AUD

A
Cheapest Retailer
-
$575 AUD
Final sale: no returns
B+
Retailer 2
-
$619 AUD
View
B+
Retailer 3
-
$667 AUD
View
Retailer 4
-
$667 AUD
View
Price last confirmed 8 days ago
B+
Retailer 5
-
$715 AUD
View
B+
Retailer 6
-
$780 AUD
View
B+
Retailer 7
-
$814 AUD
View
B+
Retailer 8
-
$834 AUD
View
B+
Retailer 9
-
$1,020 AUD
View
B
Retailer 10
-
$1,426 AUD
View
Most Expensive
C
NZ Jewellers
621758be-e3bb-414b-abab-1a2cf5f3335f · Nov 2
$2,372 AUD
$1,630 USD
View
10 more retailers have this diamond
Prices start from $575 AUDSave up to $1,797 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
0.51ct Oval
$575 AUD