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Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

ID • J/SI2 • GIA 1539286592

Certificate GIA 1539286592

Diamond specifications and retailer prices

From $2,067 AUD
As of November 6, 2026
Save $2,701 AUD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $6,640 AUD at NZ Jewellers · As of October 18, 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 1539286592. Listed at 15 retailers as of November 1, 2026, with a 131% 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

1.20
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1539286592
Dimensions7.36 × 6.60 × 4.26 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Cavity, Needle, Indented Natural
Top View
7.36 mm6.60 mm1.20 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539286592
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.8%

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: $6,640 AUD|Low: $2,067 AUD|High: $6,708 AUD|Avg: $3,227 AUD|-1.0%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 8$2,067 AUD
Retailer 2$2,169 AUD
Retailer 10$2,497 AUD
Retailer 6$2,582 AUD
Retailer 3$2,722 AUD
Retailer 7$2,823 AUD
Retailer 12$2,848 AUD
Retailer 9$2,905 AUD
Retailer 5$2,938 AUD
Retailer 4$3,141 AUD
Retailer 11$4,768 AUD
NZ Jewellers$6,640 AUD

35 data points across 12 retailers

15 retailers$2,067 AUD to $4,768 AUD

A
Cheapest Retailer
-
$2,067 AUD
A
Retailer 2
-
$2,169 AUD
View
A
Retailer 3
-
$2,497 AUD
View
Final sale: no returns
A
Retailer 4
-
$2,582 AUD
View
B+
Retailer 5
-
$2,614 AUD
View
Retailer 6
-
$2,722 AUD
View
Price last confirmed 21 days ago
Retailer 7
-
$2,722 AUD
View
Price last confirmed 19 days ago
B+
Retailer 8
-
$2,823 AUD
View
Retailer 9
-
$2,848 AUD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
$2,864 AUD
View
B+
Retailer 11
-
$2,905 AUD
View
B+
Retailer 12
-
$2,938 AUD
View
Retailer 13
-
$3,141 AUD
View
Price last confirmed 18 days ago
B
Retailer 14
-
$4,768 AUD
View
Most Expensive
NZ Jewellers
258dd2b5-1842-4f77-85bb-64125eaa28cf · Oct 18
$6,640 AUD
$4,562 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from $2,067 AUDSave up to $2,701 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
$2,067 AUD