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Oval|Natural|IGI

0.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 815673855

Shape and cutting style on the report: Oval brilliant

Certificate IGI 815673855

Diamond specifications and retailer prices

From $583 NZD
As of November 6, 2026
Save $2,433 NZD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,016 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 815673855. Listed at 14 retailers as of November 5, 2026, with prices from $583 to $3,016, a $2,433 spread on the same certified stone. NZ Jewellers lists it at $3,016. 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
SymmetryVery Good
FluorescenceNone
Crown angle30.7°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 815673855
Dimensions6.30 × 4.62 × 2.77 mm
L/W Ratio1.36
Girdle conditionFaceted
Top View
6.30 mm4.62 mm0.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 815673855
Side View
Table 60.0%Crown 30.7°Girdle: MED-THKPavilion 40.4°Culet: NoneDepth 60.0%

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: $3,016 NZD|Low: $583 NZD|High: $3,016 NZD|Avg: $1,126 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
November 6, 2026
Retailer 2$583 NZD
Retailer 13$787 NZD
Retailer 11$848 NZD
Retailer 12$848 NZD
Retailer 4$902 NZD
Retailer 3$907 NZD
Retailer 6$960 NZD
Retailer 8$1,005 NZD
Retailer 5$1,091 NZD
Retailer 9$1,219 NZD
Retailer 7$1,284 NZD
Retailer 10$1,813 NZD
NZ Jewellers$3,016 NZD

26 data points across 13 retailers

14 retailers$583 NZD to $3,016 NZD

A
Cheapest Retailer
-
$583 NZD
B+
Retailer 2
-
$787 NZD
View
B+
Retailer 3
-
$848 NZD
View
Retailer 4
-
$848 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$902 NZD
View
B+
Retailer 6
-
$907 NZD
View
B+
Retailer 7
-
$960 NZD
View
B+
Retailer 8
-
$1,005 NZD
View
B+
Retailer 9
-
$1,023 NZD
View
B
Retailer 10
-
$1,091 NZD
View
B
Retailer 11
-
$1,219 NZD
View
B
Retailer 12
-
$1,284 NZD
View
B
Retailer 13
-
$1,813 NZD
View
Most Expensive
C
NZ Jewellers
f006e734-a583-408a-b002-81a75b2f699f · Nov 5
$3,016 NZD
$1,672 USD
View
13 more retailers have this diamond
Prices start from $583 NZDSave up to $2,433 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
$583 NZD