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Heart|Natural|GIA

1.21ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 6542649830

Certificate GIA 6542649830

Diamond specifications and retailer prices

From $3,206 AUD
As of November 4, 2026
Save $4,983 AUD (61%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,190 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 6542649830. Listed at 15 retailers as of November 4, 2026, with prices from $3,206 to $8,190, a $4,983 spread on the same certified stone. NZ Jewellers lists it at $8,190. 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
FluorescenceNone
Crown angle37.21°
Pavilion angle38.86°
OriginNatural
Grading LabGIA
CertificateGIA 6542649830
Dimensions7.33 × 6.44 × 4.11 mm
L/W Ratio1.14
Top View
7.33 mm6.44 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542649830
Side View
Table 58.0%Crown 37.21°Girdle: Very ThickPavilion 38.86°Culet: NoneDepth 56.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $8,190 AUD|Low: $2,730 AUD|High: $8,190 AUD|Avg: $4,594 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 5$3,276 AUD
Retailer 8$3,548 AUD
Retailer 9$3,548 AUD
Retailer 6$3,713 AUD
Retailer 2$3,851 AUD
Retailer 7$3,866 AUD
Retailer 3$4,145 AUD
Retailer 4$6,843 AUD
NZ Jewellers$8,190 AUD

43 data points across 9 retailers

15 retailers$3,206 AUD to $8,190 AUD

B+
Cheapest Retailer
-
$3,206 AUD
B+
Retailer 2
-
$3,276 AUD
View
Final sale: no returns
B+
Retailer 3
-
$3,423 AUD
View
B+
Retailer 4
-
$3,548 AUD
View
Retailer 5
-
$3,548 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,713 AUD
View
B+
Retailer 7
-
$3,851 AUD
View
B+
Retailer 8
-
$3,866 AUD
View
B
Retailer 9
-
$4,075 AUD
View
B
Retailer 10
-
$4,075 AUD
View
B
Retailer 11
-
$4,095 AUD
View
B+
Retailer 12
-
$4,145 AUD
View
B
Retailer 13
-
$4,206 AUD
View
B
Retailer 14
-
$6,843 AUD
View
Most Expensive
B
NZ Jewellers
5fd23dc7-293c-4423-baa7-ab88def76700 · Nov 5
$8,190 AUD
$5,627 USD
View
14 more retailers have this diamond
Prices start from $3,206 AUDSave up to $4,983 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.

B+
1.21ct Heart
$3,206 AUD