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Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

GD • D/SI2 • GIA 2507889766

Certificate GIA 2507889766

Diamond specifications and retailer prices

From $961 AUD
As of November 6, 2026
Save $2,339 AUD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,299 AUD at NZ Jewellers · As of November 5, 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 D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2507889766. Listed at 11 retailers as of November 5, 2026, with prices from $961 to $3,299, a $2,339 spread on the same certified stone. NZ Jewellers lists it at $3,299. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2507889766
Dimensions6.36 × 4.52 × 2.75 mm
L/W Ratio1.41
Top View
6.36 mm4.52 mm0.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2507889766
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.0%

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 6
Current: $3,299 AUD|Low: $809 AUD|High: $3,426 AUD|Avg: $1,645 AUD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$961 AUD
Retailer 5$1,052 AUD
Retailer 7$1,093 AUD
Retailer 6$1,134 AUD
Retailer 4$1,202 AUD
Retailer 9$1,271 AUD
Retailer 3$1,471 AUD
Retailer 8$1,997 AUD
NZ Jewellers$3,299 AUD

44 data points across 9 retailers

11 retailers$961 AUD to $3,299 AUD

A
Cheapest Retailer
-
$961 AUD
Final sale: no returns
B+
Retailer 2
-
$1,052 AUD
View
B+
Retailer 3
-
$1,093 AUD
View
B+
Retailer 4
-
$1,110 AUD
View
B+
Retailer 5
-
$1,134 AUD
View
B+
Retailer 6
-
$1,202 AUD
View
B
Retailer 7
-
$1,271 AUD
View
B
Retailer 8
-
$1,349 AUD
View
B
Retailer 9
-
$1,471 AUD
View
B
Retailer 10
-
$1,997 AUD
View
Most Expensive
C
NZ Jewellers
b0d7bd41-02c5-4079-803d-9b2a8383066d · Nov 5
$3,299 AUD
$2,267 USD
View
10 more retailers have this diamond
Prices start from $961 AUDSave up to $2,339 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
$961 AUD