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Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

VG • H/SI2 • GIA 2517768691

Certificate GIA 2517768691

Diamond specifications and retailer prices

From $619 AUD
As of November 1, 2026
Save $892 AUD (59%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,570 AUD at NZ Jewellers · As of August 29, 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 GIA 2517768691. Listed at 17 retailers as of November 1, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2517768691
Dimensions6.35 × 4.46 × 2.78 mm
L/W Ratio1.42
Top View
6.35 mm4.46 mm0.51 ctH / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 2517768691
Side View
Table 57.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.4%

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: $777 AUD|Low: $619 AUD|High: $1,566 AUD|Avg: $854 AUD|-3.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9$619 AUD
Retailer 7$639 AUD
Retailer 3$739 AUD
Retailer 10$739 AUD
Retailer 2$764 AUD
Retailer 1$777 AUD
Retailer 4$806 AUD
Retailer 8$811 AUD
Retailer 11$918 AUD
Retailer 6$993 AUD
Retailer 5$1,511 AUD

42 data points across 11 retailers

17 retailers$619 AUD to $1,511 AUD

Retailer 1
-
$594 AUD
Price last confirmed 29 days ago
A
Retailer 2
-
$619 AUD
View
Retailer 3
-
$639 AUD
View
Price last confirmed 38 days ago
Retailer 4
-
$639 AUD
View
Price last confirmed 12 days ago
Retailer 5
-
$639 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$684 AUD
View
Price last confirmed 28 days ago
Retailer 7
-
$702 AUD
View
Price last confirmed 59 days ago
B+
Retailer 8
-
$739 AUD
View
B+
Retailer 9
-
$764 AUD
View
A
Retailer 10
-
$777 AUD
View
B+
Retailer 11
-
$806 AUD
View
B+
Retailer 12
-
$811 AUD
View
B+
Retailer 13
-
$918 AUD
View
B+
Retailer 14
-
$993 AUD
View
B
Retailer 15
-
$1,511 AUD
View
Retailer 16
-
$2,511 AUD
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
7b192a98-83fe-4b0e-a397-acd2b087e441 · Aug 29
$2,570 AUD
$1,766 USD
View
Price last confirmed 69 days ago
16 more retailers have this diamond
Prices start from $619 AUDSave up to $892 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
$619 AUD