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Heart|Natural|GIA

1.21ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 6545247511

Certificate GIA 6545247511

Diamond specifications and retailer prices

From $2,525 AUD
As of November 6, 2026
Save $3,400 AUD (57%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $7,294 AUD at NZ Jewellers · As of September 25, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545247511. Listed at 13 retailers as of November 4, 2026, with a 135% 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
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6545247511
Dimensions6.59 × 7.23 × 4.29 mm
L/W Ratio1.10
Top View
6.59 mm7.23 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6545247511
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.4%

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 6
Current: $2,525 AUD|Low: $2,525 AUD|High: $6,020 AUD|Avg: $3,605 AUD|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 1$2,525 AUD
Retailer 9$2,682 AUD
Retailer 10$3,062 AUD
Retailer 8$3,333 AUD
Retailer 2$3,540 AUD
Retailer 6$3,593 AUD
Retailer 4$3,685 AUD
Retailer 7$3,886 AUD
Retailer 3$3,954 AUD
Retailer 5$5,925 AUD

37 data points across 10 retailers

13 retailers$2,525 AUD to $5,925 AUD

A
Cheapest Retailer
-
$2,525 AUD
A
Retailer 2
-
$2,682 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,062 AUD
View
B+
Retailer 4
-
$3,333 AUD
View
Retailer 5
-
$3,489 AUD
View
Price last confirmed 43 days ago
B+
Retailer 6
-
$3,540 AUD
View
B+
Retailer 7
-
$3,593 AUD
View
B+
Retailer 8
-
$3,685 AUD
View
B+
Retailer 9
-
$3,886 AUD
View
B+
Retailer 10
-
$3,954 AUD
View
Retailer 11
-
$4,026 AUD
View
Price last confirmed 44 days ago
B
Retailer 12
-
$5,925 AUD
View
Most Expensive
NZ Jewellers
e43a100d-f2ba-4ee1-a407-1e5eace99caa · Sep 25
$7,294 AUD
$5,012 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from $2,525 AUDSave up to $3,400 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
$2,525 AUD