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 $1,729 USD
As of November 4, 2026
Save $2,901 USD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,630 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 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 $1,729 to $4,630, a $2,901 spread on the same certified stone. NZ Jewellers lists it at $4,630. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,630 USD|Low: $1,729 USD|High: $4,847 USD|Avg: $2,487 USD|+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$1,729 USD
Retailer 10$1,795 USD
Retailer 2$1,841 USD
Retailer 8$1,898 USD
Retailer 5$1,929 USD
Retailer 13$1,986 USD
Retailer 4$1,987 USD
Retailer 6$2,035 USD
Retailer 7$2,096 USD
Retailer 3$2,190 USD
Retailer 9$2,316 USD
Retailer 12$3,315 USD
NZ Jewellers$4,630 USD

38 data points across 13 retailers

14 retailers$1,729 USD to $4,630 USD

A
Cheapest Retailer
-
$1,729 USD
A
Retailer 2
-
$1,795 USD
View
A
Retailer 3
-
$1,841 USD
View
A
Retailer 4
-
$1,898 USD
View
B+
Retailer 5
-
$1,929 USD
View
B+
Retailer 6
-
$1,986 USD
View
Retailer 7
-
$1,987 USD
View
Price last confirmed 8 days ago
Retailer 8
-
$1,987 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$2,035 USD
View
B+
Retailer 10
-
$2,096 USD
View
B+
Retailer 11
-
$2,190 USD
View
B+
Retailer 12
-
$2,316 USD
View
B+
Retailer 13
-
$3,315 USD
View
Most Expensive
B
NZ Jewellers
adefc08f-653b-44a9-92f3-95acbb36c18e · Nov 5
$4,630 USD
View
13 more retailers have this diamond
Prices start from $1,729 USDSave up to $2,901 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
$1,729 USD