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Heart|Natural|IGI

1.21ct I SI2 Heart Natural Diamond

VG • I/SI2 • IGI 803629066

Shape and cutting style on the report: Heart brilliant

Certificate IGI 803629066

Diamond specifications and retailer prices

From $2,330 AUD
As of November 6, 2026
Save $2,202 AUD (49%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,519 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 very-good cut grade and certified by IGI 803629066. Listed at 15 retailers as of November 4, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle41.2°
OriginNatural
Grading LabIGI
CertificateIGI 803629066
Dimensions6.62 × 7.35 × 4.40 mm
L/W Ratio1.11
Girdle conditionFaceted
Top View
6.62 mm7.35 mm1.21 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 803629066
Side View
Table 56.0%Crown 35.8°Girdle: MED-THKPavilion 41.2°Culet: NoneDepth 59.9%

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: $2,358 AUD|Low: $2,260 AUD|High: $4,739 AUD|Avg: $3,002 AUD|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 2$2,330 AUD
Retailer 1$2,358 AUD
Retailer 6$2,620 AUD
Retailer 8$2,674 AUD
Retailer 7$2,717 AUD
Retailer 4$2,755 AUD
Retailer 9$3,180 AUD
Retailer 3$3,246 AUD
Retailer 5$4,532 AUD

25 data points across 9 retailers

15 retailers$2,330 AUD to $4,532 AUD

A
Cheapest Retailer
-
$2,330 AUD
A
Retailer 2
-
$2,358 AUD
View
Final sale: no returns
B+
Retailer 3
-
$2,620 AUD
View
Retailer 4
-
$2,674 AUD
View
Price last confirmed 53 days ago
Retailer 5
-
$2,674 AUD
View
Price last confirmed 36 days ago
Retailer 6
-
$2,674 AUD
View
Price last confirmed 21 days ago
B+
Retailer 7
-
$2,717 AUD
View
B+
Retailer 8
-
$2,755 AUD
View
Retailer 9
-
$2,796 AUD
View
Price last confirmed 36 days ago
Retailer 10
-
$3,084 AUD
View
Price last confirmed 61 days ago
Retailer 11
-
$3,084 AUD
View
Price last confirmed 38 days ago
Retailer 12
-
$3,084 AUD
View
Price last confirmed 52 days ago
B+
Retailer 13
-
$3,246 AUD
View
B
Retailer 14
-
$4,532 AUD
View
Most Expensive
NZ Jewellers
9c76d632-0bfd-48a8-bcfa-fa835756c98a · Sep 30
$6,519 AUD
$4,479 USD
View
Price last confirmed 37 days ago
14 more retailers have this diamond
Prices start from $2,330 AUDSave up to $2,202 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
$2,330 AUD