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Oval|Natural|IGI

1.51ct K SI1 Oval Natural Diamond

VG • K/SI1 • IGI 720526840

Shape and cutting style on the report: Oval brilliant

Certificate IGI 720526840

Diamond specifications and retailer prices

From $4,504 NZD
As of November 5, 2026
Save $6,011 NZD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $10,515 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 720526840. Listed at 14 retailers as of November 5, 2026, with prices from $4,504 to $10,515, a $6,011 spread on the same certified stone. NZ Jewellers lists it at $10,515. 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

1.51
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle33.4°
Pavilion angle41.4°
OriginNatural
Grading LabIGI
CertificateIGI 720526840
Dimensions9.16 × 6.48 × 4.01 mm
L/W Ratio1.41
Girdle conditionFaceted
Culet sizePointed
Top View
9.16 mm6.48 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 720526840
Side View
Table 58.0%Crown 33.4°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 61.9%

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: $6,139 NZD|Low: $4,504 NZD|High: $8,915 NZD|Avg: $5,677 NZD|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 8$4,504 NZD
Retailer 4$4,896 NZD
Retailer 6$4,934 NZD
Retailer 7$5,029 NZD
Retailer 9$5,222 NZD
Retailer 2$5,417 NZD
Retailer 5$5,884 NZD
Retailer 1$6,139 NZD
Retailer 3$8,787 NZD

39 data points across 9 retailers

14 retailers$4,504 NZD to $10,515 NZD

A
Cheapest Retailer
-
$4,504 NZD
B+
Retailer 2
-
$4,795 NZD
View
A
Retailer 3
-
$4,896 NZD
View
B+
Retailer 4
-
$4,934 NZD
View
Retailer 5
-
$5,029 NZD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$5,029 NZD
View
B+
Retailer 7
-
$5,222 NZD
View
B+
Retailer 8
-
$5,284 NZD
View
B+
Retailer 9
-
$5,417 NZD
View
B+
Retailer 10
-
$5,803 NZD
View
B+
Retailer 11
-
$5,884 NZD
View
B+
Retailer 12
-
$6,139 NZD
View
B
Retailer 13
-
$8,787 NZD
View
Most Expensive
B
NZ Jewellers
2dc671e7-14e7-4444-ab2c-7216e85e81f4 · Nov 5
$10,515 NZD
$5,829 USD
View
13 more retailers have this diamond
Prices start from $4,504 NZDSave up to $6,011 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
1.51ct Oval
$4,504 NZD