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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 $653 NZD
As of November 6, 2026
Save $2,289 NZD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,942 NZD 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 $653 to $2,942, a $2,289 spread on the same certified stone. NZ Jewellers lists it at $2,942. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $2,942 NZD|Low: $653 NZD|High: $2,942 NZD|Avg: $1,350 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$653 NZD
Retailer 2$693 NZD
Retailer 3$1,113 NZD
Retailer 5$1,164 NZD
Retailer 7$1,174 NZD
Retailer 8$1,191 NZD
Retailer 4$1,394 NZD
Retailer 6$2,165 NZD
NZ Jewellers$2,942 NZD

10 data points across 9 retailers

10 retailers$653 NZD to $2,942 NZD

A
Cheapest Retailer
-
$653 NZD
Final sale: no returns
A
Retailer 2
-
$693 NZD
View
A
Retailer 3
-
$942 NZD
View
A
Retailer 4
-
$1,113 NZD
View
B+
Retailer 5
-
$1,164 NZD
View
B+
Retailer 6
-
$1,174 NZD
View
B+
Retailer 7
-
$1,191 NZD
View
B+
Retailer 8
-
$1,394 NZD
View
B
Retailer 9
-
$2,165 NZD
View
Most Expensive
B
NZ Jewellers
0db0b06e-da52-41e3-9fdf-3d1329776e91 · Nov 5
$2,942 NZD
$1,631 USD
View
9 more retailers have this diamond
Prices start from $653 NZDSave up to $2,289 NZD

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
$653 NZD