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Oval|Natural|GIA

0.51ct H SI1 Oval Natural Diamond

GD • H/SI1 • GIA 2556444651

Certificate GIA 2556444651

Diamond specifications and retailer prices

From $649 AUD
As of November 7, 2026
Save $1,960 AUD (75%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,610 AUD at NZ Jewellers · As of November 7, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2556444651. Listed at 24 retailers as of November 7, 2026, with prices from $649 to $2,610, a $1,960 spread on the same certified stone. NZ Jewellers lists it at $2,610. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556444651
Dimensions6.35 × 4.50 × 2.87 mm
L/W Ratio1.41
Girdle conditionFaceted
Key to symbols
Feather, Twinning Wisp, Crystal, Cloud
Top View
6.35 mm4.50 mm0.51 ctH / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2556444651
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 63.7%

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 7
Current: $2,610 AUD|Low: $649 AUD|High: $2,610 AUD|Avg: $1,129 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 7, 2026
Retailer 2$649 AUD
Retailer 11$767 AUD
Retailer 6$832 AUD
Retailer 20$865 AUD
Retailer 8$897 AUD
Retailer 15$897 AUD
Retailer 16$940 AUD
Retailer 4$961 AUD
Retailer 5$965 AUD
Retailer 14$971 AUD
Retailer 19$1,010 AUD
Retailer 18$1,022 AUD
Retailer 9$1,023 AUD
Retailer 10$1,046 AUD
Retailer 7$1,113 AUD
Retailer 17$1,154 AUD
Retailer 13$1,161 AUD
Retailer 12$1,183 AUD
Retailer 21$1,227 AUD
Retailer 22$1,284 AUD
Retailer 3$1,921 AUD
NZ Jewellers$2,610 AUD

23 data points across 22 retailers

24 retailers$649 AUD to $2,610 AUD

A
Cheapest Retailer
-
$649 AUD
B+
Retailer 2
-
$707 AUD
View
B+
Retailer 3
-
$767 AUD
View
Final sale: no returns
B+
Retailer 4
-
$832 AUD
View
B+
Retailer 5
-
$865 AUD
View
B+
Retailer 6
-
$897 AUD
View
B+
Retailer 7
-
$897 AUD
View
B+
Retailer 8
-
$940 AUD
View
B+
Retailer 9
-
$961 AUD
View
B+
Retailer 10
-
$965 AUD
View
B+
Retailer 11
-
$971 AUD
View
B
Retailer 12
-
$1,010 AUD
View
B+
Retailer 13
-
$1,022 AUD
View
B
Retailer 14
-
$1,023 AUD
View
B
Retailer 15
-
$1,046 AUD
View
B
Retailer 16
-
$1,113 AUD
View
B
Retailer 17
-
$1,154 AUD
View
B
Retailer 18
-
$1,161 AUD
View
B
Retailer 19
-
$1,183 AUD
View
B
Retailer 20
-
$1,227 AUD
View
Retailer 21
-
$1,263 AUD
View
Price last confirmed 34 days ago
B
Retailer 22
-
$1,284 AUD
View
C
Retailer 23
-
$1,921 AUD
View
Most Expensive
C
NZ Jewellers
dd1940f1-609e-45b9-ade2-9c6db32196c8 · Nov 7
$2,610 AUD
$1,793 USD
View
23 more retailers have this diamond
Prices start from $649 AUDSave up to $1,960 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
$649 AUD