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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 €938 EUR
As of November 6, 2026
Save €1,820 EUR (66%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: €2,758 EUR 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 €938 to €2,758, a €1,820 spread on the same certified stone. NZ Jewellers lists it at €2,758. 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: €2,758 EUR|Low: €938 EUR|High: €2,758 EUR|Avg: €1,469 EUR
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€938 EUR
Retailer 3€1,096 EUR
Retailer 5€1,130 EUR
Retailer 9€1,133 EUR
Retailer 8€1,174 EUR
Retailer 10€1,266 EUR
Retailer 4€1,305 EUR
Retailer 6€1,379 EUR
Retailer 7€2,065 EUR
NZ Jewellers€2,758 EUR

44 data points across 10 retailers

11 retailers€938 EUR to €2,758 EUR

A
Cheapest Retailer
-
€938 EUR
B+
Retailer 2
-
€1,096 EUR
View
B+
Retailer 3
-
€1,130 EUR
View
B+
Retailer 4
-
€1,133 EUR
View
B+
Retailer 5
-
€1,174 EUR
View
B+
Retailer 6
-
€1,251 EUR
View
B+
Retailer 7
-
€1,266 EUR
View
B+
Retailer 8
-
€1,305 EUR
View
B+
Retailer 9
-
€1,379 EUR
View
B
Retailer 10
-
€2,065 EUR
View
Most Expensive
C
NZ Jewellers
c8f7d190-9234-456a-88b7-f702d5630897 · Nov 5
€2,758 EUR
$3,079 USD
View
10 more retailers have this diamond
Prices start from €938 EURSave up to €1,820 EUR

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
€938 EUR