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Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

F/SI1 • GIA 2566019280

Certificate GIA 2566019280

Diamond specifications and retailer prices

From $4,132 AUD
As of November 6, 2026
Save $4,772 AUD (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $8,904 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 F colour (colourless) and SI1 clarity (slightly-included) and certified by GIA 2566019280. Listed at 5 retailers as of November 5, 2026, with prices from $4,132 to $8,904, a $4,772 spread on the same certified stone. NZ Jewellers lists it at $8,904. 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
F
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2566019280
Dimensions6.99 × 7.09 × 4.11 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Crystal, Feather, Needle
Top View
6.99 mm7.09 mm1.21 ctF / SI1
OriginNatural
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 2566019280
Side View
Table 58.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 58.0%

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 6
Current: $8,904 AUD|Low: $4,129 AUD|High: $8,904 AUD|Avg: $5,855 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$4,132 AUD
Retailer 5$4,260 AUD
Retailer 4$4,423 AUD
Retailer 3$7,102 AUD
NZ Jewellers$8,904 AUD

16 data points across 5 retailers

5 retailers$4,132 AUD to $8,904 AUD

B+
Cheapest Retailer
-
$4,132 AUD
B
Retailer 2
-
$4,260 AUD
View
B
Retailer 3
-
$4,423 AUD
View
B
Retailer 4
-
$7,102 AUD
View
Most Expensive
C
NZ Jewellers
5ffd7e0a-1695-455b-9853-ef5c2183389e · Nov 5
$8,904 AUD
$6,118 USD
View
4 more retailers have this diamond
Prices start from $4,132 AUDSave up to $4,772 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
$4,132 AUD