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Heart|Natural|IGI

1.21ct I SI2 Heart Natural Diamond

EX • I/SI2 • IGI 743558502

Shape and cutting style on the report: Heart brilliant

Certificate IGI 743558502

Diamond specifications and retailer prices

From $1,464 AUD
As of November 6, 2026
5 retailers carry this diamond
Most expensive: $4,011 AUD at NZ Jewellers · As of September 30, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI 743558502. Listed at 5 retailers as of November 6, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle39.3°
OriginNatural
Grading LabIGI
CertificateIGI 743558502
Dimensions6.84 × 7.46 × 4.19 mm
L/W Ratio1.09
Girdle conditionFaceted
Top View
6.84 mm7.46 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 743558502
Side View
Table 62.0%Crown 33.3°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 56.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $4,011 AUD|Low: $1,041 AUD|High: $4,011 AUD|Avg: $1,821 AUD
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
October 1, 2026
Retailer 9$1,041 AUD
Retailer 10$1,128 AUD
Retailer 14$1,263 AUD
Retailer 4$1,464 AUD
Retailer 5$1,595 AUD
Retailer 12$1,645 AUD
Retailer 15$1,645 AUD
Retailer 8$1,707 AUD
Retailer 2$1,713 AUD
Retailer 13$1,751 AUD
Retailer 6$1,840 AUD
Retailer 3$1,898 AUD
Retailer 7$1,956 AUD
Retailer 11$3,043 AUD
NZ Jewellers$4,011 AUD

10 data points across 15 retailers

5 retailers

A
Cheapest Retailer
-
$1,464 AUD
Retailer 2
-
$1,645 AUD
View
Price last confirmed 39 days ago
Retailer 3
-
$1,707 AUD
View
Price last confirmed 36 days ago
Retailer 4
-
$1,898 AUD
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
2a47777f-4314-4185-bfb5-7795270a5ca8 · Sep 30
$4,011 AUD
$2,756 USD
View
Price last confirmed 37 days ago
4 more retailers have this diamond
Prices start from $1,464 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
1.21ct Heart
$1,464 AUD