Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 5566631743

Certificate GIA 5566631743

Diamond specifications and retailer prices

From $362 USD
As of November 6, 2026
Save $1,269 USD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,631 USD 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 $362 to $1,631, a $1,269 spread on the same certified stone. NZ Jewellers lists it at $1,631. 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
Color
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: $1,631 USD|Low: $362 USD|High: $1,631 USD|Avg: $748 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$362 USD
Retailer 2$384 USD
Retailer 3$617 USD
Retailer 5$645 USD
Retailer 7$651 USD
Retailer 8$660 USD
Retailer 4$773 USD
Retailer 6$1,200 USD
NZ Jewellers$1,631 USD

10 data points across 9 retailers

10 retailers$362 USD to $1,631 USD

A
Cheapest Retailer
-
$362 USD
Final sale: no returns
A
Retailer 2
-
$384 USD
View
A
Retailer 3
-
$522 USD
View
A
Retailer 4
-
$617 USD
View
B+
Retailer 5
-
$645 USD
View
B+
Retailer 6
-
$651 USD
View
B+
Retailer 7
-
$660 USD
View
B+
Retailer 8
-
$773 USD
View
B
Retailer 9
-
$1,200 USD
View
Most Expensive
B
NZ Jewellers
0db0b06e-da52-41e3-9fdf-3d1329776e91 · Nov 5
$1,631 USD
View
9 more retailers have this diamond
Prices start from $362 USDSave up to $1,269 USD

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
$362 USD