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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 $3,634 AUD
As of November 5, 2026
Save $4,849 AUD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,484 AUD 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 $3,634 to $8,484, a $4,849 spread on the same certified stone. NZ Jewellers lists it at $8,484. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $4,953 AUD|Low: $3,634 AUD|High: $7,193 AUD|Avg: $4,580 AUD|+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$3,634 AUD
Retailer 4$3,950 AUD
Retailer 6$3,981 AUD
Retailer 7$4,058 AUD
Retailer 9$4,213 AUD
Retailer 2$4,371 AUD
Retailer 5$4,748 AUD
Retailer 1$4,953 AUD
Retailer 3$7,089 AUD

39 data points across 9 retailers

14 retailers$3,634 AUD to $8,484 AUD

A
Cheapest Retailer
-
$3,634 AUD
B+
Retailer 2
-
$3,868 AUD
View
A
Retailer 3
-
$3,950 AUD
View
B+
Retailer 4
-
$3,981 AUD
View
Retailer 5
-
$4,058 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$4,058 AUD
View
B+
Retailer 7
-
$4,213 AUD
View
B+
Retailer 8
-
$4,263 AUD
View
B+
Retailer 9
-
$4,371 AUD
View
B+
Retailer 10
-
$4,682 AUD
View
B+
Retailer 11
-
$4,748 AUD
View
B+
Retailer 12
-
$4,953 AUD
View
B
Retailer 13
-
$7,089 AUD
View
Most Expensive
B
NZ Jewellers
2dc671e7-14e7-4444-ab2c-7216e85e81f4 · Nov 5
$8,484 AUD
$5,829 USD
View
13 more retailers have this diamond
Prices start from $3,634 AUDSave up to $4,849 AUD

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
$3,634 AUD