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Heart|Natural|IGI

1.51ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 773617467

Shape and cutting style on the report: Heart brilliant

Certificate IGI 773617467

Diamond specifications and retailer prices

From $2,516 AUD
As of November 4, 2026
Save $4,222 AUD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,739 AUD at NZ Jewellers · As of November 5, 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 773617467. Listed at 14 retailers as of November 4, 2026, with prices from $2,516 to $6,739, a $4,222 spread on the same certified stone. NZ Jewellers lists it at $6,739. 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
FluorescenceNone
Crown angle39°
Pavilion angle39.6°
OriginNatural
Grading LabIGI
CertificateIGI 773617467
Dimensions6.46 × 7.80 × 5.02 mm
L/W Ratio1.21
Girdle conditionFaceted
Top View
6.46 mm7.80 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 773617467
Side View
Table 56.0%Crown 39°Girdle: STK-THKPavilion 39.6°CuletDepth 64.4%

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 4
Current: $6,739 AUD|Low: $2,516 AUD|High: $7,054 AUD|Avg: $3,620 AUD|+6.7%
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 11$2,516 AUD
Retailer 10$2,612 AUD
Retailer 2$2,679 AUD
Retailer 8$2,762 AUD
Retailer 5$2,807 AUD
Retailer 13$2,890 AUD
Retailer 4$2,892 AUD
Retailer 6$2,962 AUD
Retailer 7$3,051 AUD
Retailer 3$3,187 AUD
Retailer 9$3,371 AUD
Retailer 12$4,825 AUD
NZ Jewellers$6,739 AUD

38 data points across 13 retailers

14 retailers$2,516 AUD to $6,739 AUD

A
Cheapest Retailer
-
$2,516 AUD
A
Retailer 2
-
$2,612 AUD
View
A
Retailer 3
-
$2,679 AUD
View
A
Retailer 4
-
$2,762 AUD
View
B+
Retailer 5
-
$2,807 AUD
View
B+
Retailer 6
-
$2,890 AUD
View
Retailer 7
-
$2,892 AUD
View
Price last confirmed 8 days ago
Retailer 8
-
$2,892 AUD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$2,962 AUD
View
B+
Retailer 10
-
$3,051 AUD
View
B+
Retailer 11
-
$3,187 AUD
View
B+
Retailer 12
-
$3,371 AUD
View
B+
Retailer 13
-
$4,825 AUD
View
Most Expensive
B
NZ Jewellers
adefc08f-653b-44a9-92f3-95acbb36c18e · Nov 5
$6,739 AUD
$4,630 USD
View
13 more retailers have this diamond
Prices start from $2,516 AUDSave up to $4,222 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
$2,516 AUD