Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

GD • D/SI2 • GIA 2507889766

Certificate GIA 2507889766

Diamond specifications and retailer prices

From $692 USD
As of October 31, 2026
Save $1,662 USD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,354 USD at NZ Jewellers · As of October 30, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2507889766. Listed at 11 retailers as of October 30, 2026, with prices from $692 to $2,354, a $1,662 spread on the same certified stone. NZ Jewellers lists it at $2,354. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2507889766
Dimensions6.36 × 4.52 × 2.75 mm
L/W Ratio1.41
Top View
6.36 mm4.52 mm0.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 2507889766
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 61.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,354 USD|Low: $556 USD|High: $2,354 USD|Avg: $1,027 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 5$692 USD
Retailer 9$751 USD
Retailer 10$751 USD
Retailer 6$779 USD
Retailer 2$817 USD
Retailer 8$866 USD
Retailer 7$873 USD
Retailer 4$1,065 USD
Retailer 3$1,374 USD
NZ Jewellers$2,354 USD

43 data points across 10 retailers

11 retailers$692 USD to $2,354 USD

B+
Cheapest Retailer
-
$692 USD
Final sale: no returns
B+
Retailer 2
-
$751 USD
View
B+
Retailer 3
-
$763 USD
View
B+
Retailer 4
-
$779 USD
View
B+
Retailer 5
-
$817 USD
£644 GBP
View
B+
Retailer 6
-
$866 USD
View
B+
Retailer 7
-
$873 USD
View
B
Retailer 8
-
$927 USD
View
B
Retailer 9
-
$1,065 USD
€1,014 EUR
View
B
Retailer 10
-
$1,374 USD
£1,082 GBP
View
Most Expensive
C
NZ Jewellers
b0d7bd41-02c5-4079-803d-9b2a8383066d · Oct 30
$2,354 USD
View
10 more retailers have this diamond
Prices start from $692 USDSave up to $1,662 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.

B+
0.51ct Oval
$692 USD