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Heart|Natural|GIA

1.20ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 1509270809

Certificate GIA 1509270809

Diamond specifications and retailer prices

From $5,504 AUD
As of November 6, 2026
Save $6,525 AUD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,029 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1509270809. Listed at 14 retailers as of November 5, 2026, with prices from $5,504 to $12,029, a $6,525 spread on the same certified stone. NZ Jewellers lists it at $12,029. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1509270809
Dimensions6.26 × 7.39 × 4.56 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
6.26 mm7.39 mm1.20 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1509270809
Side View
Table 62.0%CrownGirdle: Slightly ThickPavilionCulet: NoneDepth 61.7%

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: $12,029 AUD|Low: $5,685 AUD|High: $12,029 AUD|Avg: $7,668 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 9$5,685 AUD
Retailer 4$6,255 AUD
Retailer 6$6,255 AUD
Retailer 8$6,255 AUD
Retailer 2$6,789 AUD
Retailer 3$6,798 AUD
Retailer 5$7,217 AUD
Retailer 7$10,997 AUD
NZ Jewellers$12,029 AUD

34 data points across 9 retailers

14 retailers$5,504 AUD to $12,029 AUD

B+
Cheapest Retailer
-
$5,504 AUD
B
Retailer 2
-
$5,685 AUD
View
B
Retailer 3
-
$5,875 AUD
View
B
Retailer 4
-
$6,223 AUD
View
B
Retailer 5
-
$6,255 AUD
View
B
Retailer 6
-
$6,255 AUD
View
Retailer 7
-
$6,255 AUD
View
Price last confirmed 9 days ago
B
Retailer 8
-
$6,789 AUD
View
B
Retailer 9
-
$6,798 AUD
View
B
Retailer 10
-
$7,217 AUD
View
Retailer 11
-
$7,217 AUD
View
Price last confirmed 29 days ago
Retailer 12
-
$7,625 AUD
View
Price last confirmed 15 days ago
B
Retailer 13
-
$10,997 AUD
View
Most Expensive
B
NZ Jewellers
3b720932-fd33-4e95-af39-8e3c3886d0cb · Nov 5
$12,029 AUD
$8,265 USD
View
13 more retailers have this diamond
Prices start from $5,504 AUDSave up to $6,525 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
$5,504 AUD