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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 $1,342 SGD
As of November 6, 2026
Save $2,604 SGD (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,946 SGD 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 $1,342 to $3,946, a $2,604 spread on the same certified stone. NZ Jewellers lists it at $3,946. 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: $3,946 SGD|Low: $1,342 SGD|High: $3,946 SGD|Avg: $2,102 SGD
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$1,342 SGD
Retailer 3$1,569 SGD
Retailer 5$1,617 SGD
Retailer 9$1,621 SGD
Retailer 8$1,680 SGD
Retailer 10$1,811 SGD
Retailer 4$1,867 SGD
Retailer 6$1,974 SGD
Retailer 7$2,955 SGD
NZ Jewellers$3,946 SGD

44 data points across 10 retailers

11 retailers$1,342 SGD to $3,946 SGD

A
Cheapest Retailer
-
$1,342 SGD
B+
Retailer 2
-
$1,569 SGD
View
B+
Retailer 3
-
$1,617 SGD
View
B+
Retailer 4
-
$1,621 SGD
View
B+
Retailer 5
-
$1,680 SGD
View
B+
Retailer 6
-
$1,790 SGD
View
B+
Retailer 7
-
$1,811 SGD
View
B+
Retailer 8
-
$1,867 SGD
View
B+
Retailer 9
-
$1,974 SGD
View
B
Retailer 10
-
$2,955 SGD
View
Most Expensive
C
NZ Jewellers
c8f7d190-9234-456a-88b7-f702d5630897 · Nov 5
$3,946 SGD
$3,079 USD
View
10 more retailers have this diamond
Prices start from $1,342 SGDSave up to $2,604 SGD

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
$1,342 SGD