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Oval|Natural|GIA

0.51ct H SI2 Oval Natural Diamond

EX • H/SI2 • GIA 2567308159

Certificate GIA 2567308159

Diamond specifications and retailer prices

From $385 USD
As of November 1, 2026
Save $1,253 USD (76%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,638 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 2567308159. Listed at 14 retailers as of November 1, 2026, with prices from $385 to $1,638, a $1,253 spread on the same certified stone. NZ Jewellers lists it at $1,638. 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
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2567308159
Dimensions6.35 × 4.46 × 2.85 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal
Top View
6.35 mm4.46 mm0.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2567308159
Side View
Table 60.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 64.0%

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 1
Current: $1,638 USD|Low: $384 USD|High: $1,638 USD|Avg: $699 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 7$385 USD
Retailer 3$481 USD
Retailer 10$522 USD
Retailer 12$535 USD
Retailer 8$563 USD
Retailer 9$563 USD
Retailer 11$603 USD
Retailer 4$631 USD
Retailer 5$648 USD
Retailer 2$775 USD
Retailer 6$1,206 USD
NZ Jewellers$1,638 USD

39 data points across 12 retailers

14 retailers$385 USD to $1,638 USD

A
Cheapest Retailer
-
$385 USD
A
Retailer 2
-
$426 USD
View
A
Retailer 3
-
$481 USD
View
Final sale: no returns
A
Retailer 4
-
$522 USD
View
A
Retailer 5
-
$535 USD
View
A
Retailer 6
-
$563 USD
View
Retailer 7
-
$563 USD
View
Price last confirmed 8 days ago
B+
Retailer 8
-
$603 USD
View
B+
Retailer 9
-
$648 USD
View
B+
Retailer 10
-
$662 USD
View
B+
Retailer 11
-
$702 USD
View
B+
Retailer 12
-
$775 USD
View
B
Retailer 13
-
$1,206 USD
View
Most Expensive
B
NZ Jewellers
d4aaebf6-6ba7-45ed-bc08-bb071ebcd627 · Nov 5
$1,638 USD
View
13 more retailers have this diamond
Prices start from $385 USDSave up to $1,253 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
$385 USD