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Oval|Natural|GIA

0.51ct D SI2 Oval Natural Diamond

ID • D/SI2 • GIA 7528907538

Certificate GIA 7528907538

Diamond specifications and retailer prices

From $1,320 NZD
As of November 6, 2026
Save $1,297 NZD (50%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,806 NZD at NZ Jewellers · As of October 17, 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 7528907538. Listed at 11 retailers as of November 4, 2026, with a 98% 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7528907538
Dimensions7.60 × 3.65 × 2.17 mm
L/W Ratio2.08
Girdle conditionPolished
Culet sizeNone
Key to symbols
Cloud, Crystal
Top View
7.60 mm3.65 mm0.51 ctD / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7528907538
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.4%

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: $2,015 NZD|Low: $1,295 NZD|High: $3,676 NZD|Avg: $2,243 NZD|-9.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 4$1,320 NZD
Retailer 6$1,389 NZD
Retailer 3$1,670 NZD
Retailer 7$1,764 NZD
Retailer 1$2,015 NZD
Retailer 8$2,457 NZD
Retailer 2$2,617 NZD
Retailer 9$2,686 NZD
Retailer 5$3,584 NZD

33 data points across 9 retailers

11 retailers$1,320 NZD to $2,617 NZD

A
Cheapest Retailer
-
$1,320 NZD
Final sale: no returns
A
Retailer 2
-
$1,389 NZD
View
Retailer 3
-
$1,533 NZD
View
Price last confirmed 21 days ago
Retailer 4
-
$1,533 NZD
View
Price last confirmed 19 days ago
Retailer 5
-
$1,591 NZD
View
Price last confirmed 21 days ago
B+
Retailer 6
-
$1,670 NZD
View
Retailer 7
-
$1,768 NZD
View
Price last confirmed 19 days ago
B+
Retailer 8
-
$2,015 NZD
View
B
Retailer 9
-
$2,617 NZD
View
Retailer 10
-
$3,584 NZD
View
Price last confirmed 9 days ago
Most Expensive
NZ Jewellers
c90a8430-0570-4fce-839c-c8429a544cac · Oct 17
$4,806 NZD
$2,664 USD
View
Price under review
10 more retailers have this diamond
Prices start from $1,320 NZDSave up to $1,297 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
$1,320 NZD