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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 $922 NZD
As of November 6, 2026
Save $1,396 NZD (60%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $3,518 NZD 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 November 2, 2026, with a 151% 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $1,237 NZD|Low: $889 NZD|High: $2,554 NZD|Avg: $1,495 NZD|-7.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$922 NZD
Retailer 1$1,237 NZD
Retailer 3$1,252 NZD
Retailer 2$1,481 NZD
Retailer 4$1,541 NZD
Retailer 6$2,318 NZD

45 data points across 6 retailers

17 retailers$922 NZD to $2,318 NZD

A
Cheapest Retailer
-
$922 NZD
Final sale: no returns
Retailer 2
-
$1,028 NZD
View
Price last confirmed 19 days ago
Retailer 3
-
$1,106 NZD
View
Price last confirmed 45 days ago
Retailer 4
-
$1,108 NZD
View
Price last confirmed 21 days ago
Retailer 5
-
$1,108 NZD
View
Price last confirmed 22 days ago
Retailer 6
-
$1,122 NZD
View
Price last confirmed 53 days ago
Retailer 7
-
$1,187 NZD
View
Price last confirmed 19 days ago
A
Retailer 8
-
$1,237 NZD
View
A
Retailer 9
-
$1,252 NZD
View
Retailer 10
-
$1,277 NZD
View
Price last confirmed 45 days ago
Retailer 11
-
$1,295 NZD
View
Price last confirmed 53 days ago
B+
Retailer 12
-
$1,481 NZD
View
B+
Retailer 13
-
$1,541 NZD
View
B
Retailer 14
-
$2,318 NZD
View
Retailer 15
-
$3,225 NZD
View
Price last confirmed 20 days ago
Retailer 16
-
$3,469 NZD
View
Price last confirmed 46 days ago
Most Expensive
NZ Jewellers
da349af0-584a-489a-bff0-25c08fe352aa · Sep 15
$3,518 NZD
$1,950 USD
View
Price last confirmed 52 days ago
16 more retailers have this diamond
Prices start from $922 NZDSave up to $1,396 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
$922 NZD