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Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

GD • D/SI2 • GIA 2507889766

Certificate GIA 2507889766

Diamond specifications and retailer prices

From $1,191 NZD
As of November 6, 2026
Save $2,899 NZD (71%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,089 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 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 November 5, 2026, with prices from $1,191 to $4,089, a $2,899 spread on the same certified stone. NZ Jewellers lists it at $4,089. 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
Colour
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 →
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: $4,089 NZD|Low: $1,003 NZD|High: $4,246 NZD|Avg: $2,039 NZD|-3.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$1,191 NZD
Retailer 5$1,304 NZD
Retailer 7$1,355 NZD
Retailer 6$1,405 NZD
Retailer 4$1,490 NZD
Retailer 9$1,575 NZD
Retailer 3$1,824 NZD
Retailer 8$2,475 NZD
NZ Jewellers$4,089 NZD

44 data points across 9 retailers

11 retailers$1,191 NZD to $4,089 NZD

A
Cheapest Retailer
-
$1,191 NZD
Final sale: no returns
B+
Retailer 2
-
$1,304 NZD
View
B+
Retailer 3
-
$1,355 NZD
View
B+
Retailer 4
-
$1,376 NZD
View
B+
Retailer 5
-
$1,405 NZD
View
B+
Retailer 6
-
$1,490 NZD
View
B
Retailer 7
-
$1,575 NZD
View
B
Retailer 8
-
$1,672 NZD
View
B
Retailer 9
-
$1,824 NZD
View
B
Retailer 10
-
$2,475 NZD
View
Most Expensive
C
NZ Jewellers
b0d7bd41-02c5-4079-803d-9b2a8383066d · Nov 5
$4,089 NZD
$2,267 USD
View
10 more retailers have this diamond
Prices start from $1,191 NZDSave up to $2,899 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
$1,191 NZD