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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 $2,617 AUD
As of November 4, 2026
Save $4,448 AUD (63%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,065 AUD 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 $2,617 to $7,065, a $4,448 spread on the same certified stone. NZ Jewellers lists it at $7,065. 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: $7,065 AUD|Low: $2,617 AUD|High: $7,065 AUD|Avg: $3,666 AUD|+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$2,617 AUD
Retailer 7$2,672 AUD
Retailer 13$2,825 AUD
Retailer 16$2,883 AUD
Retailer 10$2,896 AUD
Retailer 2$2,947 AUD
Retailer 8$2,985 AUD
Retailer 12$3,030 AUD
Retailer 4$3,040 AUD
Retailer 14$3,097 AUD
Retailer 11$3,205 AUD
Retailer 5$3,342 AUD
Retailer 6$3,558 AUD
Retailer 9$3,938 AUD
Retailer 15$5,074 AUD
NZ Jewellers$7,065 AUD

30 data points across 16 retailers

15 retailers$2,617 AUD to $7,065 AUD

A
Cheapest Retailer
-
$2,617 AUD
A
Retailer 2
-
$2,825 AUD
View
B+
Retailer 3
-
$2,883 AUD
View
A
Retailer 4
-
$2,896 AUD
View
B+
Retailer 5
-
$2,947 AUD
View
Retailer 6
-
$2,985 AUD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$3,030 AUD
View
B+
Retailer 8
-
$3,040 AUD
View
B+
Retailer 9
-
$3,097 AUD
View
B+
Retailer 10
-
$3,205 AUD
View
B+
Retailer 11
-
$3,342 AUD
View
B+
Retailer 12
-
$3,558 AUD
View
B
Retailer 13
-
$3,938 AUD
View
B
Retailer 14
-
$5,074 AUD
View
Most Expensive
C
NZ Jewellers
e7f57f2b-408c-44ac-805d-a1c3ad3009ff · Nov 3
$7,065 AUD
$4,854 USD
View
14 more retailers have this diamond
Prices start from $2,617 AUDSave up to $4,448 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
$2,617 AUD