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Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

EX • D/SI2 • GIA 2564205635

Certificate GIA 2564205635

Diamond specifications and retailer prices

From $512 USD
As of October 31, 2026
Save $780 USD (60%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,950 USD at NZ Jewellers · As of September 15, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2564205635. Listed at 17 retailers as of October 29, 2026, with a 152% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
D
Color
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2564205635
Dimensions6.03 × 4.49 × 2.81 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Feather
Top View
6.03 mm4.49 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 2564205635
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 62.7%

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: Oct 31
Current: $703 USD|Low: $493 USD|High: $1,419 USD|Avg: $801 USD|-0.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4$512 USD
Retailer 7$662 USD
Retailer 3$688 USD
Retailer 1$703 USD
Retailer 2$827 USD
Retailer 5$856 USD
Retailer 6$1,292 USD

45 data points across 7 retailers

17 retailers$512 USD to $1,292 USD

A
Cheapest Retailer
-
$512 USD
Final sale: no returns
Retailer 2
-
$570 USD
View
Price last confirmed 14 days ago
Retailer 3
-
$613 USD
View
Price last confirmed 40 days ago
Retailer 4
-
$614 USD
View
Price last confirmed 16 days ago
Retailer 5
-
$614 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$622 USD
View
Price last confirmed 48 days ago
Retailer 7
-
$658 USD
View
Price last confirmed 13 days ago
A
Retailer 8
-
$688 USD
View
A
Retailer 9
-
$703 USD
£553 GBP
View
Retailer 10
-
$708 USD
View
Price last confirmed 40 days ago
Retailer 11
-
$718 USD
View
Price last confirmed 48 days ago
B+
Retailer 12
-
$827 USD
€788 EUR
View
B+
Retailer 13
-
$856 USD
View
B
Retailer 14
-
$1,292 USD
£1,017 GBP
View
Retailer 15
-
$1,788 USD
View
Price last confirmed 15 days ago
Retailer 16
-
$1,923 USD
View
Price last confirmed 41 days ago
Most Expensive
NZ Jewellers
da349af0-584a-489a-bff0-25c08fe352aa · Sep 15
$1,950 USD
View
Price last confirmed 47 days ago
16 more retailers have this diamond
Prices start from $512 USDSave up to $780 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
$512 USD