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Heart|Natural|IGI

1.21ct I SI1 Heart Natural Diamond

VG • I/SI1 • IGI 788607601

Shape and cutting style on the report: Heart brilliant

Certificate IGI 788607601

Diamond specifications and retailer prices

From €1,610 EUR
As of November 4, 2026
Save €2,737 EUR (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €4,348 EUR at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 788607601. Listed at 15 retailers as of November 3, 2026, with prices from €1,610 to €4,348, a €2,737 spread on the same certified stone. NZ Jewellers lists it at €4,348. 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

1.21
Carat
I
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle41.6°
OriginNatural
Grading LabIGI
CertificateIGI 788607601
Dimensions6.57 × 7.20 × 4.42 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Top View
6.57 mm7.20 mm1.21 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 788607601
Side View
Table 62.0%Crown 37.3°Girdle: MED-THKPavilion 41.6°Culet: NoneDepth 61.4%

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 4
Current: €4,348 EUR|Low: €1,610 EUR|High: €4,348 EUR|Avg: €2,256 EUR|+13.2%
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
Retailer 14
Retailer 15
Retailer 16
November 4, 2026
Retailer 3€1,610 EUR
Retailer 7€1,644 EUR
Retailer 13€1,738 EUR
Retailer 16€1,774 EUR
Retailer 10€1,782 EUR
Retailer 2€1,814 EUR
Retailer 8€1,837 EUR
Retailer 12€1,865 EUR
Retailer 4€1,871 EUR
Retailer 14€1,906 EUR
Retailer 11€1,972 EUR
Retailer 5€2,056 EUR
Retailer 6€2,190 EUR
Retailer 9€2,424 EUR
Retailer 15€3,122 EUR
NZ Jewellers€4,348 EUR

30 data points across 16 retailers

15 retailers€1,610 EUR to €4,348 EUR

A
Cheapest Retailer
-
€1,610 EUR
A
Retailer 2
-
€1,738 EUR
View
B+
Retailer 3
-
€1,774 EUR
View
A
Retailer 4
-
€1,782 EUR
View
B+
Retailer 5
-
€1,814 EUR
View
Retailer 6
-
€1,837 EUR
View
Price last confirmed 9 days ago
B+
Retailer 7
-
€1,865 EUR
View
B+
Retailer 8
-
€1,871 EUR
View
B+
Retailer 9
-
€1,906 EUR
View
B+
Retailer 10
-
€1,972 EUR
View
B+
Retailer 11
-
€2,056 EUR
View
B+
Retailer 12
-
€2,190 EUR
View
B
Retailer 13
-
€2,424 EUR
View
B
Retailer 14
-
€3,122 EUR
View
Most Expensive
C
NZ Jewellers
e7f57f2b-408c-44ac-805d-a1c3ad3009ff · Nov 3
€4,348 EUR
$4,854 USD
View
14 more retailers have this diamond
Prices start from €1,610 EURSave up to €2,737 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
1.21ct Heart
€1,610 EUR