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Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 3555609127

Certificate GIA 3555609127

Diamond specifications and retailer prices

From $2,144 AUD
As of November 6, 2026
Save $4,800 AUD (69%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,944 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 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 3555609127. Listed at 8 retailers as of November 5, 2026, with prices from $2,144 to $6,944, a $4,800 spread on the same certified stone. NZ Jewellers lists it at $6,944. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555609127
Dimensions6.53 × 7.35 × 4.27 mm
L/W Ratio1.13
Girdle conditionThick
Top View
6.53 mm7.35 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555609127
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 58.1%

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: $6,944 AUD|Low: $2,144 AUD|High: $6,944 AUD|Avg: $3,699 AUD|+6.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,144 AUD
Retailer 7$2,272 AUD
Retailer 6$2,572 AUD
Retailer 4$3,046 AUD
Retailer 5$3,091 AUD
Retailer 3$3,866 AUD
Retailer 8$4,973 AUD
NZ Jewellers$6,944 AUD

35 data points across 8 retailers

8 retailers$2,144 AUD to $6,944 AUD

A
Cheapest Retailer
-
$2,144 AUD
A
Retailer 2
-
$2,272 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,572 AUD
View
B+
Retailer 4
-
$3,046 AUD
View
B+
Retailer 5
-
$3,091 AUD
View
B+
Retailer 6
-
$3,866 AUD
View
B
Retailer 7
-
$4,973 AUD
View
Most Expensive
C
NZ Jewellers
09864021-c292-4cb7-a6d4-cf127ea330cb · Nov 5
$6,944 AUD
$4,771 USD
View
7 more retailers have this diamond
Prices start from $2,144 AUDSave up to $4,800 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
1.20ct Heart
$2,144 AUD