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Heart|Natural|IGI

1.51ct L SI1 Heart Natural Diamond

VG • L/SI1 • IGI 646466581

Shape and cutting style on the report: Heart brilliant

Certificate IGI 646466581

Diamond specifications and retailer prices

From $1,958 USD
As of November 6, 2026
Save $2,835 USD (59%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $4,793 USD 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 L colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 646466581. Listed at 10 retailers as of November 5, 2026, with prices from $1,958 to $4,793, a $2,835 spread on the same certified stone. NZ Jewellers lists it at $4,793. 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
L
Color
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Crown angle37.6°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 646466581
Dimensions6.61 × 7.59 × 4.85 mm
L/W Ratio1.15
Girdle conditionFaceted
Culet sizeNone
Top View
6.61 mm7.59 mm1.51 ctL / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateIGI 646466581
Side View
Table 60.0%Crown 37.6°Girdle: STK-THKPavilion 40.9°Culet: NoneDepth 63.9%

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 6
Current: $4,793 USD|Low: $1,958 USD|High: $4,793 USD|Avg: $2,659 USD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$1,958 USD
Retailer 9$2,249 USD
Retailer 3$2,254 USD
Retailer 6$2,293 USD
Retailer 8$2,295 USD
Retailer 7$2,399 USD
Retailer 4$2,646 USD
Retailer 5$2,798 USD
NZ Jewellers$4,793 USD

46 data points across 9 retailers

10 retailers$1,958 USD to $4,793 USD

A
Cheapest Retailer
-
$1,958 USD
B+
Retailer 2
-
$2,249 USD
View
B+
Retailer 3
-
$2,254 USD
View
B+
Retailer 4
-
$2,293 USD
View
B+
Retailer 5
-
$2,295 USD
View
B+
Retailer 6
-
$2,399 USD
View
B+
Retailer 7
-
$2,432 USD
View
B
Retailer 8
-
$2,646 USD
View
B
Retailer 9
-
$2,798 USD
View
Most Expensive
C
NZ Jewellers
f696f278-9fc6-45d8-a96f-69b938fdd517 · Nov 5
$4,793 USD
View
9 more retailers have this diamond
Prices start from $1,958 USDSave up to $2,835 USD

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
$1,958 USD