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Heart|Natural|GIA

1.21ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 5536984909

Certificate GIA 5536984909

Diamond specifications and retailer prices

From $2,445 AUD
As of November 6, 2026
Save $4,200 AUD (63%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $6,645 AUD at NZ Jewellers · As of November 5, 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 stated by the retailer rather than the lab and certified by GIA 5536984909. Listed at 16 retailers as of November 5, 2026, with prices from $2,445 to $6,645, a $4,200 spread on the same certified stone. NZ Jewellers lists it at $6,645. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.07°
Pavilion angle43°
OriginNatural
Grading LabGIA
CertificateGIA 5536984909
Dimensions7.43 × 6.55 × 4.46 mm
L/W Ratio1.13
Top View
7.43 mm6.55 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5536984909
Side View
Table 60.0%Crown 36.07°Girdle: STK-VTKPavilion 43°Culet: NoneDepth 60.0%

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: $6,645 AUD|Low: $2,445 AUD|High: $6,846 AUD|Avg: $3,502 AUD|-2.9%
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
November 6, 2026
Retailer 9$2,445 AUD
Retailer 2$2,477 AUD
Retailer 10$2,639 AUD
Retailer 4$2,725 AUD
Retailer 6$2,733 AUD
Retailer 7$2,807 AUD
Retailer 5$2,850 AUD
Retailer 12$2,883 AUD
Retailer 13$2,914 AUD
Retailer 8$2,927 AUD
Retailer 15$2,947 AUD
Retailer 14$3,097 AUD
Retailer 11$3,646 AUD
Retailer 3$4,759 AUD
NZ Jewellers$6,645 AUD

30 data points across 15 retailers

16 retailers$2,445 AUD to $6,645 AUD

A
Cheapest Retailer
-
$2,445 AUD
A
Retailer 2
-
$2,477 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,639 AUD
View
A
Retailer 4
-
$2,725 AUD
View
A
Retailer 5
-
$2,733 AUD
View
Retailer 6
-
$2,807 AUD
View
Price last confirmed 8 days ago
Retailer 7
-
$2,807 AUD
View
Price last confirmed 21 days ago
A
Retailer 8
-
$2,850 AUD
View
A
Retailer 9
-
$2,883 AUD
View
A
Retailer 10
-
$2,914 AUD
View
A
Retailer 11
-
$2,927 AUD
View
B+
Retailer 12
-
$2,947 AUD
View
A
Retailer 13
-
$3,097 AUD
View
B+
Retailer 14
-
$3,646 AUD
View
B
Retailer 15
-
$4,759 AUD
View
Most Expensive
B
NZ Jewellers
a466cf9b-e0f0-4729-a109-7e13c56f6111 · Nov 5
$6,645 AUD
$4,566 USD
View
15 more retailers have this diamond
Prices start from $2,445 AUDSave up to $4,200 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
$2,445 AUD