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Oval|Natural|GIA

0.51ct D VS1 Oval Natural Diamond

GD • D/VS1 • GIA 1509440320

Certificate GIA 1509440320

Diamond specifications and retailer prices

From $1,987 NZD
$1,120 USD
As of October 28, 2026
Save $2,520 NZD (56%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $5,971 NZD 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 VS1 clarity (very-slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1509440320. Listed at 23 retailers as of October 28, 2026, with a 127% 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
VS1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1509440320
Dimensions6.55 × 4.61 × 2.64 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Needle, Feather
Top View
6.55 mm4.61 mm0.51 ctD / VS1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1509440320
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.2%

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 28
Current: $5,971 NZD|Low: $1,987 NZD|High: $5,971 NZD|Avg: $3,250 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 9$1,987 NZD
Retailer 11$2,046 NZD
Retailer 3$2,218 NZD
Retailer 13$2,303 NZD
Retailer 10$2,431 NZD
Retailer 4$2,559 NZD
Retailer 2$2,728 NZD
Retailer 6$3,163 NZD
Retailer 12$3,194 NZD
Retailer 8$3,769 NZD
Retailer 5$4,408 NZD
Retailer 7$4,507 NZD
NZ Jewellers$5,971 NZD

42 data points across 13 retailers

23 retailers$1,987 NZD to $4,507 NZD

B+
Cheapest Retailer
-
$1,987 NZD
$1,120 USD
B+
Retailer 2
-
$2,046 NZD
$1,153 USD
View
Final sale: no returns
B+
Retailer 3
-
$2,124 NZD
$1,197 USD
View
B+
Retailer 4
-
$2,147 NZD
$1,210 USD
View
B+
Retailer 5
-
$2,177 NZD
$1,227 USD
View
B+
Retailer 6
-
$2,218 NZD
$1,250 USD
View
B+
Retailer 7
-
$2,218 NZD
$1,250 USD
View
B
Retailer 8
-
$2,303 NZD
$1,298 USD
View
B
Retailer 9
-
$2,431 NZD
$1,370 USD
View
B
Retailer 10
-
$2,559 NZD
$1,442 USD
View
B
Retailer 11
-
$2,661 NZD
$1,500 USD
View
B
Retailer 12
-
$2,661 NZD
$1,500 USD
View
B
Retailer 13
-
$2,728 NZD
£1,211 GBP
View
B
Retailer 14
-
$2,750 NZD
$1,550 USD
View
B
Retailer 15
-
$2,775 NZD
$1,564 USD
View
B
Retailer 16
-
$3,073 NZD
$1,732 USD
View
B
Retailer 17
-
$3,163 NZD
€1,698 EUR
View
Retailer 18
-
$3,194 NZD
A$2,769 AUD
View
Price last confirmed 26 days ago
B
Retailer 19
-
$3,769 NZD
ZAR 34,318 ZAR
View
B
Retailer 20
-
$3,995 NZD
CA$3,128 CAD
View
B
Retailer 21
-
$4,408 NZD
£1,956 GBP
View
B
Retailer 22
-
$4,507 NZD
£2,000 GBP
View
Most Expensive
NZ Jewellers
9b8e3c4d-435d-4935-919f-5de14ed1b4db · Oct 30
$5,971 NZD
$3,365 USD
View
Price under review
22 more retailers have this diamond
Prices start from $1,987 NZDSave up to $2,520 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.

B+
0.51ct Oval
$1,987 NZD