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Oval|Natural|IGI

0.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 815656298

Shape and cutting style on the report: Oval brilliant

Certificate IGI 815656298

Diamond specifications and retailer prices

From $687 NZD
As of November 5, 2026
Save $2,212 NZD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,899 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 815656298. Listed at 15 retailers as of November 5, 2026, with prices from $687 to $2,899, a $2,212 spread on the same certified stone. NZ Jewellers lists it at $2,899. 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
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle39.5°
Pavilion angle35.6°
OriginNatural
Grading LabIGI
CertificateIGI 815656298
Dimensions6.30 × 4.40 × 2.75 mm
L/W Ratio1.43
Girdle conditionFaceted
Top View
6.30 mm4.40 mm0.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 815656298
Side View
Table 58.0%Crown 39.5°Girdle: MED-THKPavilion 35.6°Culet: NoneDepth 62.5%

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 5
Current: $2,899 NZD|Low: $687 NZD|High: $2,962 NZD|Avg: $1,136 NZD|-2.1%
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
Retailer 14
Retailer 15
November 6, 2026
Retailer 11$687 NZD
Retailer 7$704 NZD
Retailer 12$756 NZD
Retailer 13$815 NZD
Retailer 6$823 NZD
Retailer 10$873 NZD
Retailer 9$877 NZD
Retailer 3$884 NZD
Retailer 2$922 NZD
Retailer 5$1,044 NZD
Retailer 14$1,165 NZD
Retailer 15$1,174 NZD
Retailer 8$1,219 NZD
Retailer 4$1,750 NZD
NZ Jewellers$2,899 NZD

18 data points across 15 retailers

15 retailers$687 NZD to $2,899 NZD

A
Cheapest Retailer
-
$687 NZD
Retailer 2
-
$704 NZD
View
Price last confirmed 9 days ago
A
Retailer 3
-
$756 NZD
View
A
Retailer 4
-
$815 NZD
View
Retailer 5
-
$823 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$873 NZD
View
B+
Retailer 7
-
$877 NZD
View
B+
Retailer 8
-
$884 NZD
View
B+
Retailer 9
-
$922 NZD
View
B+
Retailer 10
-
$1,044 NZD
View
B
Retailer 11
-
$1,165 NZD
View
B
Retailer 12
-
$1,174 NZD
View
B
Retailer 13
-
$1,219 NZD
View
B
Retailer 14
-
$1,750 NZD
View
Most Expensive
C
NZ Jewellers
d3d89fb4-5f5c-4fd9-8d0d-1a0c11664320 · Nov 5
$2,899 NZD
$1,607 USD
View
14 more retailers have this diamond
Prices start from $687 NZDSave up to $2,212 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
$687 NZD