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Oval|Natural|GIA

0.51ct F SI1 Oval Natural Diamond

EX • F/SI1 • GIA 2567161655

Certificate GIA 2567161655

Diamond specifications and retailer prices

From $830 AUD
As of November 6, 2026
Save $1,994 AUD (71%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,823 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567161655. Listed at 16 retailers as of November 5, 2026, with prices from $830 to $2,823, a $1,994 spread on the same certified stone. NZ Jewellers lists it at $2,823. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2567161655
Dimensions6.26 × 4.50 × 2.84 mm
L/W Ratio1.39
Culet sizeNone
Key to symbols
Crystal, Cloud
Top View
6.26 mm4.50 mm0.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2567161655
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: 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: $2,823 AUD|Low: $830 AUD|High: $2,888 AUD|Avg: $1,265 AUD|-2.2%
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
November 6, 2026
Retailer 5$830 AUD
Retailer 7$885 AUD
Retailer 11$901 AUD
Retailer 12$969 AUD
Retailer 15$969 AUD
Retailer 13$1,039 AUD
Retailer 9$1,096 AUD
Retailer 2$1,099 AUD
Retailer 4$1,134 AUD
Retailer 3$1,179 AUD
Retailer 8$1,205 AUD
Retailer 6$1,243 AUD
Retailer 10$1,390 AUD
Retailer 14$2,078 AUD
NZ Jewellers$2,823 AUD

27 data points across 15 retailers

16 retailers$830 AUD to $2,823 AUD

A
Cheapest Retailer
-
$830 AUD
Final sale: no returns
A
Retailer 2
-
$885 AUD
View
A
Retailer 3
-
$901 AUD
View
A
Retailer 4
-
$969 AUD
View
Retailer 5
-
$969 AUD
View
Price last confirmed 9 days ago
A
Retailer 6
-
$1,039 AUD
View
B+
Retailer 7
-
$1,096 AUD
View
B+
Retailer 8
-
$1,099 AUD
View
B+
Retailer 9
-
$1,134 AUD
View
B+
Retailer 10
-
$1,179 AUD
View
B+
Retailer 11
-
$1,205 AUD
View
B+
Retailer 12
-
$1,243 AUD
View
B+
Retailer 13
-
$1,390 AUD
View
Retailer 14
-
$1,460 AUD
View
Price last confirmed 34 days ago
B
Retailer 15
-
$2,078 AUD
View
Most Expensive
B
NZ Jewellers
ba5e2339-6805-4867-9208-27a31935c787 · Nov 5
$2,823 AUD
$1,940 USD
View
15 more retailers have this diamond
Prices start from $830 AUDSave up to $1,994 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
$830 AUD