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Oval|Natural|GIA

0.51ct D SI1 Oval Natural Diamond

GD • D/SI1 • GIA 2528947522

Certificate GIA 2528947522

Diamond specifications and retailer prices

From $1,067 NZD
HK$4,700 HKD
As of November 1, 2026
Save $1,526 NZD (59%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $4,022 NZD at NZ Jewellers · As of September 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2528947522. Listed at 20 retailers as of November 1, 2026, with a 143% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2528947522
Dimensions6.65 × 4.45 × 2.70 mm
L/W Ratio1.49
Top View
6.65 mm4.45 mm0.51 ctD / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2528947522
Side View
Table 57.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 60.8%

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 1
Current: $1,076 NZD|Low: $1,067 NZD|High: $2,609 NZD|Avg: $1,660 NZD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 5$1,067 NZD
Retailer 1$1,076 NZD
Retailer 8$1,295 NZD
Retailer 16$1,308 NZD
Retailer 3$1,437 NZD
Retailer 6$1,497 NZD
Retailer 4$1,634 NZD
Retailer 14$1,652 NZD
Retailer 11$1,704 NZD
Retailer 15$1,712 NZD
Retailer 9$1,739 NZD
Retailer 2$1,910 NZD
Retailer 7$1,930 NZD
Retailer 12$2,005 NZD
Retailer 13$2,187 NZD
Retailer 10$2,594 NZD

31 data points across 16 retailers

20 retailers$1,067 NZD to $2,594 NZD

A
Cheapest Retailer
-
$1,067 NZD
HK$4,700 HKD
A
Retailer 2
-
$1,076 NZD
₹57,737 INR
View
Retailer 3
-
$1,283 NZD
$723 USD
View
Price last confirmed 31 days ago
Retailer 4
-
$1,295 NZD
$730 USD
View
Price last confirmed 34 days ago
B+
Retailer 5
-
$1,308 NZD
$737 USD
View
Final sale: no returns
Retailer 6
-
$1,332 NZD
$751 USD
View
Price last confirmed 33 days ago
B+
Retailer 7
-
$1,437 NZD
$810 USD
View
Retailer 8
-
$1,480 NZD
$834 USD
View
Price last confirmed 33 days ago
B+
Retailer 9
-
$1,497 NZD
SGD 1,140 SGD
View
B
Retailer 10
-
$1,634 NZD
$921 USD
View
B
Retailer 11
-
$1,652 NZD
$931 USD
View
B
Retailer 12
-
$1,704 NZD
£756 GBP
View
B
Retailer 13
-
$1,712 NZD
$965 USD
View
B
Retailer 14
-
$1,739 NZD
£772 GBP
View
B
Retailer 15
-
$1,910 NZD
$1,076 USD
View
Retailer 16
-
$1,930 NZD
A$1,674 AUD
View
Price last confirmed 29 days ago
B
Retailer 17
-
$2,005 NZD
€1,076 EUR
View
B
Retailer 18
-
$2,187 NZD
ZAR 19,909 ZAR
View
B
Retailer 19
-
$2,594 NZD
£1,151 GBP
View
Most Expensive
NZ Jewellers
832d887b-63a4-4071-9fb7-a2c8f5ad3a4b · Sep 30
$4,022 NZD
$2,267 USD
View
Price last confirmed 32 days ago
19 more retailers have this diamond
Prices start from $1,067 NZDSave up to $1,526 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
$1,067 NZD