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Heart|Natural|IGI

1.00ct K SI1 Heart Natural Diamond

VG • K/SI1 • IGI 816643964

Shape and cutting style on the report: Heart brilliant

Certificate IGI 816643964

Diamond specifications and retailer prices

From $1,889 NZD
As of November 6, 2026
Save $3,666 NZD (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,554 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1ct natural heart diamond

This 1ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 816643964. Listed at 11 retailers as of November 5, 2026, with prices from $1,889 to $5,554, a $3,666 spread on the same certified stone. NZ Jewellers lists it at $5,554. 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

1.00
Carat
K
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.4°
Pavilion angle40.4°
OriginNatural
Grading LabIGI
CertificateIGI 816643964
Dimensions5.77 × 6.74 × 4.27 mm
L/W Ratio1.17
Girdle conditionFaceted
Top View
5.77 mm6.74 mm1.00 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 816643964
Side View
Table 57.0%Crown 39.4°Girdle: MED-THKPavilion 40.4°CuletDepth 63.4%

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 6
Current: $5,554 NZD|Low: $1,889 NZD|High: $5,554 NZD|Avg: $2,959 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 2$1,889 NZD
Retailer 3$2,208 NZD
Retailer 5$2,277 NZD
Retailer 9$2,282 NZD
Retailer 8$2,365 NZD
Retailer 10$2,549 NZD
Retailer 4$2,628 NZD
Retailer 6$2,778 NZD
Retailer 7$4,160 NZD
NZ Jewellers$5,554 NZD

44 data points across 10 retailers

11 retailers$1,889 NZD to $5,554 NZD

A
Cheapest Retailer
-
$1,889 NZD
B+
Retailer 2
-
$2,208 NZD
View
B+
Retailer 3
-
$2,277 NZD
View
B+
Retailer 4
-
$2,282 NZD
View
B+
Retailer 5
-
$2,365 NZD
View
B+
Retailer 6
-
$2,520 NZD
View
B+
Retailer 7
-
$2,549 NZD
View
B+
Retailer 8
-
$2,628 NZD
View
B+
Retailer 9
-
$2,778 NZD
View
B
Retailer 10
-
$4,160 NZD
View
Most Expensive
C
NZ Jewellers
c8f7d190-9234-456a-88b7-f702d5630897 · Nov 5
$5,554 NZD
$3,079 USD
View
10 more retailers have this diamond
Prices start from $1,889 NZDSave up to $3,666 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
1.00ct Heart
$1,889 NZD