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Heart|Natural|IGI

1.51ct K SI2 Heart Natural Diamond

VG • K/SI2 • IGI 762534665

Shape and cutting style on the report: Heart brilliant

Certificate IGI 762534665

Diamond specifications and retailer prices

From $2,873 AUD
As of November 6, 2026
Save $2,783 AUD (49%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,955 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 762534665. Listed at 11 retailers as of November 2, 2026, with a 97% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.2°
Pavilion angle42.2°
OriginNatural
Grading LabIGI
CertificateIGI 762534665
Dimensions6.97 × 7.99 × 4.80 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizePointed
Top View
6.97 mm7.99 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 762534665
Side View
Table 60.0%Crown 36.2°Girdle: Slightly ThickPavilion 42.2°Culet: NoneDepth 60.1%

Caratlytics Score

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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 6
Current: $2,873 AUD|Low: $2,873 AUD|High: $5,899 AUD|Avg: $3,632 AUD|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 1$2,873 AUD
Retailer 8$2,933 AUD
Retailer 4$3,195 AUD
Retailer 6$3,327 AUD
Retailer 2$3,382 AUD
Retailer 5$3,395 AUD
Retailer 7$3,781 AUD
Retailer 3$5,656 AUD

14 data points across 8 retailers

11 retailers$2,873 AUD to $5,656 AUD

A
Cheapest Retailer
-
$2,873 AUD
B+
Retailer 2
-
$3,195 AUD
View
Retailer 3
-
$3,327 AUD
View
Price last confirmed 36 days ago
Retailer 4
-
$3,327 AUD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$3,382 AUD
View
B+
Retailer 6
-
$3,395 AUD
View
Retailer 7
-
$3,481 AUD
View
Price last confirmed 36 days ago
Retailer 8
-
$3,839 AUD
View
Price last confirmed 61 days ago
Retailer 9
-
$3,839 AUD
View
Price last confirmed 38 days ago
B+
Retailer 10
-
$5,656 AUD
View
Most Expensive
NZ Jewellers
57cbf092-bbff-45d3-a72e-98e509c71126 · Sep 30
$6,955 AUD
$4,779 USD
View
Price last confirmed 37 days ago
10 more retailers have this diamond
Prices start from $2,873 AUDSave up to $2,783 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 Heart
$2,873 AUD