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Heart|Natural|GIA

1.20ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 5413323903

Certificate GIA 5413323903

Diamond specifications and retailer prices

From $5,311 AUD
As of November 5, 2026
Save $6,603 AUD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $11,914 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5413323903. Listed at 11 retailers as of November 5, 2026, with prices from $5,311 to $11,914, a $6,603 spread on the same certified stone. NZ Jewellers lists it at $11,914. 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

1.20
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5413323903
Dimensions6.36 × 7.37 × 4.28 mm
L/W Ratio1.16
Top View
6.36 mm7.37 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5413323903
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: 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 5
Current: $11,914 AUD|Low: $5,107 AUD|High: $11,914 AUD|Avg: $7,344 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 3$5,311 AUD
Retailer 7$5,408 AUD
Retailer 5$5,718 AUD
Retailer 6$6,196 AUD
Retailer 8$6,196 AUD
Retailer 2$6,798 AUD
Retailer 9$7,147 AUD
Retailer 10$7,562 AUD
Retailer 4$10,862 AUD
NZ Jewellers$11,914 AUD

37 data points across 10 retailers

11 retailers$5,311 AUD to $11,914 AUD

B+
Cheapest Retailer
-
$5,311 AUD
B+
Retailer 2
-
$5,408 AUD
View
B
Retailer 3
-
$5,504 AUD
View
B
Retailer 4
-
$5,686 AUD
View
B
Retailer 5
-
$5,718 AUD
View
Final sale: no returns
B
Retailer 6
-
$6,196 AUD
View
B
Retailer 7
-
$6,196 AUD
View
B
Retailer 8
-
$6,798 AUD
View
B
Retailer 9
-
$7,147 AUD
View
B
Retailer 10
-
$10,862 AUD
View
Most Expensive
B
NZ Jewellers
f98dea9f-60bb-4ddc-afc2-d8ee93f13844 · Nov 5
$11,914 AUD
$8,186 USD
View
10 more retailers have this diamond
Prices start from $5,311 AUDSave up to $6,603 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+
1.20ct Heart
$5,311 AUD