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Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 5566631743

Certificate GIA 5566631743

Diamond specifications and retailer prices

From $527 AUD
As of November 6, 2026
Save $1,847 AUD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,374 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 H 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 5566631743. Listed at 10 retailers as of November 5, 2026, with prices from $527 to $2,374, a $1,847 spread on the same certified stone. NZ Jewellers lists it at $2,374. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 5566631743
Dimensions6.25 × 4.36 × 2.79 mm
L/W Ratio1.43
Girdle conditionVery Thick
Top View
6.25 mm4.36 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 5566631743
Side View
Table 61.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 64.1%

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: $2,374 AUD|Low: $527 AUD|High: $2,374 AUD|Avg: $1,089 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$527 AUD
Retailer 2$559 AUD
Retailer 3$898 AUD
Retailer 5$939 AUD
Retailer 7$947 AUD
Retailer 8$961 AUD
Retailer 4$1,125 AUD
Retailer 6$1,746 AUD
NZ Jewellers$2,374 AUD

10 data points across 9 retailers

10 retailers$527 AUD to $2,374 AUD

A
Cheapest Retailer
-
$527 AUD
Final sale: no returns
A
Retailer 2
-
$559 AUD
View
A
Retailer 3
-
$760 AUD
View
A
Retailer 4
-
$898 AUD
View
B+
Retailer 5
-
$939 AUD
View
B+
Retailer 6
-
$947 AUD
View
B+
Retailer 7
-
$961 AUD
View
B+
Retailer 8
-
$1,125 AUD
View
B
Retailer 9
-
$1,746 AUD
View
Most Expensive
B
NZ Jewellers
0db0b06e-da52-41e3-9fdf-3d1329776e91 · Nov 5
$2,374 AUD
$1,631 USD
View
9 more retailers have this diamond
Prices start from $527 AUDSave up to $1,847 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
$527 AUD