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Heart|Natural|IGI

1.51ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 803629052

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629052

Diamond specifications and retailer prices

From $3,869 NZD
As of November 6, 2026
Save $3,725 NZD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,366 NZD 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 SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 803629052. Listed at 14 retailers as of November 4, 2026, with a 96% 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
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle42.8°
OriginNatural
Grading LabIGI
CertificateIGI 803629052
Dimensions6.71 × 7.91 × 4.92 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
6.71 mm7.91 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629052
Side View
Table 60.0%Crown 37.2°Girdle: MED-THKPavilion 42.8°Culet: NoneDepth 62.2%

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 6
Current: $3,869 NZD|Low: $3,869 NZD|High: $7,944 NZD|Avg: $4,948 NZD|-4.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$3,869 NZD
Retailer 6$3,933 NZD
Retailer 7$4,263 NZD
Retailer 9$4,481 NZD
Retailer 2$4,533 NZD
Retailer 8$4,573 NZD
Retailer 3$4,611 NZD
Retailer 4$5,305 NZD
Retailer 5$7,594 NZD

42 data points across 9 retailers

14 retailers$3,869 NZD to $7,594 NZD

A
Cheapest Retailer
-
$3,869 NZD
A
Retailer 2
-
$3,933 NZD
View
B+
Retailer 3
-
$4,263 NZD
View
Retailer 4
-
$4,481 NZD
View
Price last confirmed 37 days ago
Retailer 5
-
$4,481 NZD
View
Price last confirmed 22 days ago
B+
Retailer 6
-
$4,533 NZD
View
B+
Retailer 7
-
$4,573 NZD
View
A
Retailer 8
-
$4,611 NZD
View
Retailer 9
-
$4,687 NZD
View
Price last confirmed 37 days ago
Retailer 10
-
$5,170 NZD
View
Price last confirmed 62 days ago
Retailer 11
-
$5,170 NZD
View
Price last confirmed 39 days ago
B+
Retailer 12
-
$5,305 NZD
View
B
Retailer 13
-
$7,594 NZD
View
Most Expensive
NZ Jewellers
bebea34d-aa10-4dfc-9a6a-812814e66304 · Sep 30
$9,366 NZD
$5,192 USD
View
Price last confirmed 37 days ago
13 more retailers have this diamond
Prices start from $3,869 NZDSave up to $3,725 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 Heart
$3,869 NZD