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Heart|Natural|GIA

1.21ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 6545536297

Certificate GIA 6545536297

Diamond specifications and retailer prices

From $2,365 AUD
As of November 6, 2026
Save $3,093 AUD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $6,565 AUD at NZ Jewellers · As of October 18, 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 J 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 6545536297. Listed at 13 retailers as of November 4, 2026, with a 131% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545536297
Dimensions6.60 × 7.43 × 4.32 mm
L/W Ratio1.13
Top View
6.60 mm7.43 mm1.21 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6545536297
Side View
Table 56.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $6,565 AUD|Low: $2,365 AUD|High: $6,565 AUD|Avg: $3,625 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 7$2,365 AUD
Retailer 2$2,473 AUD
Retailer 9$3,141 AUD
Retailer 10$3,141 AUD
Retailer 6$3,275 AUD
Retailer 3$3,292 AUD
Retailer 4$3,394 AUD
Retailer 8$3,624 AUD
Retailer 5$5,458 AUD
NZ Jewellers$6,565 AUD

42 data points across 10 retailers

13 retailers$2,365 AUD to $5,458 AUD

A
Cheapest Retailer
-
$2,365 AUD
A
Retailer 2
-
$2,473 AUD
View
B+
Retailer 3
-
$2,988 AUD
View
Retailer 4
-
$3,141 AUD
View
Price last confirmed 21 days ago
Retailer 5
-
$3,141 AUD
View
Price last confirmed 19 days ago
B+
Retailer 6
-
$3,224 AUD
View
B+
Retailer 7
-
$3,275 AUD
View
Retailer 8
-
$3,285 AUD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$3,292 AUD
View
B+
Retailer 10
-
$3,394 AUD
View
Retailer 11
-
$3,624 AUD
View
Price last confirmed 18 days ago
B
Retailer 12
-
$5,458 AUD
View
Most Expensive
NZ Jewellers
fa3577ee-5542-49c3-a737-58f41377a77e · Oct 18
$6,565 AUD
$4,511 USD
View
Price last confirmed 19 days ago
12 more retailers have this diamond
Prices start from $2,365 AUDSave up to $3,093 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
$2,365 AUD