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Oval|Natural|IGI

0.51ct J SI2 Oval Natural Diamond

VG • J/SI2 • IGI 800673931

Shape and cutting style on the report: Oval brilliant

Certificate IGI 800673931

Diamond specifications and retailer prices

From $651 NZD
$367 USD
As of November 2, 2026
Save $2,058 NZD (76%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,709 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 J colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 800673931. Listed at 11 retailers as of October 30, 2026, with prices from $651 to $2,709, a $2,058 spread on the same certified stone. NZ Jewellers lists it at $2,709. 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
J
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
Crown angle34.1°
Pavilion angle39.2°
OriginNatural
Grading LabIGI
CertificateIGI 800673931
Dimensions6.48 × 4.49 × 2.70 mm
L/W Ratio1.44
Girdle conditionFaceted
Top View
6.48 mm4.49 mm0.51 ctJ / SI2
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateIGI 800673931
Side View
Table 61.0%Crown 34.1°Girdle: MED-THKPavilion 39.2°Culet: NoneDepth 60.1%

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: Nov 2
Current: $2,709 NZD|Low: $541 NZD|High: $2,709 NZD|Avg: $1,054 NZD|+10.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 8$651 NZD
Retailer 4$694 NZD
Retailer 9$706 NZD
Retailer 7$761 NZD
Retailer 10$761 NZD
Retailer 12$816 NZD
Retailer 2$844 NZD
Retailer 3$939 NZD
Retailer 11$992 NZD
Retailer 6$1,282 NZD
Retailer 5$1,631 NZD
NZ Jewellers$2,709 NZD

41 data points across 12 retailers

11 retailers$651 NZD to $2,709 NZD

B+
Cheapest Retailer
-
$651 NZD
$367 USD
Final sale: no returns
B+
Retailer 2
-
$706 NZD
$398 USD
View
B+
Retailer 3
-
$761 NZD
$429 USD
View
B+
Retailer 4
-
$761 NZD
$429 USD
View
B+
Retailer 5
-
$816 NZD
$460 USD
View
B+
Retailer 6
-
$844 NZD
£375 GBP
View
B+
Retailer 7
-
$939 NZD
$529 USD
View
B
Retailer 8
-
$992 NZD
$559 USD
View
B
Retailer 9
-
$1,282 NZD
€688 EUR
View
B
Retailer 10
-
$1,631 NZD
£724 GBP
View
Most Expensive
C
NZ Jewellers
59f33a37-6632-4c0e-bf8a-df1f3f5e7ae7 · Oct 30
$2,709 NZD
$1,527 USD
View
10 more retailers have this diamond
Prices start from $651 NZDSave up to $2,058 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
$651 NZD