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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 $1,524 AUD
As of November 6, 2026
Save $2,957 AUD (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,481 AUD 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 $1,524 to $4,481, a $2,957 spread on the same certified stone. NZ Jewellers lists it at $4,481. 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: $4,481 AUD|Low: $1,524 AUD|High: $4,481 AUD|Avg: $2,387 AUD
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$1,524 AUD
Retailer 3$1,781 AUD
Retailer 5$1,837 AUD
Retailer 9$1,841 AUD
Retailer 8$1,908 AUD
Retailer 10$2,056 AUD
Retailer 4$2,121 AUD
Retailer 6$2,241 AUD
Retailer 7$3,356 AUD
NZ Jewellers$4,481 AUD

44 data points across 10 retailers

11 retailers$1,524 AUD to $4,481 AUD

A
Cheapest Retailer
-
$1,524 AUD
B+
Retailer 2
-
$1,781 AUD
View
B+
Retailer 3
-
$1,837 AUD
View
B+
Retailer 4
-
$1,841 AUD
View
B+
Retailer 5
-
$1,908 AUD
View
B+
Retailer 6
-
$2,033 AUD
View
B+
Retailer 7
-
$2,056 AUD
View
B+
Retailer 8
-
$2,121 AUD
View
B+
Retailer 9
-
$2,241 AUD
View
B
Retailer 10
-
$3,356 AUD
View
Most Expensive
C
NZ Jewellers
c8f7d190-9234-456a-88b7-f702d5630897 · Nov 5
$4,481 AUD
$3,079 USD
View
10 more retailers have this diamond
Prices start from $1,524 AUDSave up to $2,957 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
1.00ct Heart
$1,524 AUD