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Oval|Natural|GIA

0.51ct G SI2 Oval Natural Diamond

EX • G/SI2 • GIA 2556761535

Certificate GIA 2556761535

Diamond specifications and retailer prices

From $556 AUD
As of November 6, 2026
Save $1,992 AUD (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,668 AUD at NZ Jewellers · As of September 30, 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 G 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 GIA 2556761535. Listed at 19 retailers as of November 5, 2026, with a 358% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.51
Carat
G
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
Crown angle34.7°
Pavilion angle39.6°
OriginNatural
Grading LabGIA
CertificateGIA 2556761535
Dimensions6.32 × 4.64 × 2.76 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizeNone
Top View
6.32 mm4.64 mm0.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2556761535
Side View
Table 63.0%Crown 34.7°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,548 AUD|Low: $515 AUD|High: $2,668 AUD|Avg: $870 AUD|-4.5%
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
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 9$515 AUD
Retailer 6$556 AUD
Retailer 7$568 AUD
Retailer 4$603 AUD
Retailer 3$633 AUD
Retailer 16$649 AUD
Retailer 17$649 AUD
Retailer 14$696 AUD
Retailer 2$751 AUD
Retailer 5$760 AUD
Retailer 8$763 AUD
Retailer 10$789 AUD
Retailer 12$814 AUD
Retailer 15$835 AUD
Retailer 11$998 AUD
Retailer 13$1,534 AUD
NZ Jewellers$2,548 AUD

30 data points across 17 retailers

19 retailers$556 AUD to $2,548 AUD

Retailer 1
-
$515 AUD
Price last confirmed 22 days ago
A
Retailer 2
-
$556 AUD
View
Final sale: no returns
Retailer 3
-
$568 AUD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$603 AUD
View
A
Retailer 5
-
$633 AUD
View
Retailer 6
-
$649 AUD
View
Price last confirmed 8 days ago
A
Retailer 7
-
$649 AUD
View
A
Retailer 8
-
$696 AUD
View
Retailer 9
-
$726 AUD
View
Price last confirmed 21 days ago
A
Retailer 10
-
$751 AUD
View
A
Retailer 11
-
$760 AUD
View
A
Retailer 12
-
$763 AUD
View
A
Retailer 13
-
$789 AUD
View
A
Retailer 14
-
$814 AUD
View
A
Retailer 15
-
$835 AUD
View
B+
Retailer 16
-
$998 AUD
View
B
Retailer 17
-
$1,534 AUD
View
B
Retailer 18
-
$2,548 AUD
View
Most Expensive
NZ Jewellers
9e429250-2206-4f0c-994c-efa0161c3e00 · Sep 30
$2,668 AUD
$1,833 USD
View
Price last confirmed 37 days ago
18 more retailers have this diamond
Prices start from $556 AUDSave up to $1,992 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
$556 AUD