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Heart|Natural|GIA

1.20ct J SI1 Heart Natural Diamond

VG • J/SI1 • GIA 3555071739

Certificate GIA 3555071739

Diamond specifications and retailer prices

From $3,011 AUD
As of November 6, 2026
Save $3,719 AUD (55%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,974 AUD at NZ Jewellers · As of October 21, 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 SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 3555071739. Listed at 14 retailers as of November 4, 2026, with a 123% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.20
Carat
J
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555071739
Dimensions7.32 × 6.12 × 4.38 mm
L/W Ratio1.20
Culet sizeNone
Key to symbols
Twinning Wisp, Indented Natural
Top View
7.32 mm6.12 mm1.20 ctJ / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555071739
Side View
Table 57.0%CrownGirdle: Sli. ThickPavilionCulet: NoneDepth 59.9%

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: $7,974 AUD|Low: $3,330 AUD|High: $7,974 AUD|Avg: $4,807 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$3,330 AUD
Retailer 8$3,455 AUD
Retailer 9$3,615 AUD
Retailer 2$3,736 AUD
Retailer 7$3,988 AUD
Retailer 4$4,699 AUD
Retailer 3$4,781 AUD
Retailer 5$6,730 AUD
NZ Jewellers$7,974 AUD

43 data points across 9 retailers

14 retailers$3,011 AUD to $6,730 AUD

B+
Cheapest Retailer
-
$3,011 AUD
B+
Retailer 2
-
$3,330 AUD
View
Retailer 3
-
$3,455 AUD
View
Price last confirmed 16 days ago
Retailer 4
-
$3,615 AUD
View
Price last confirmed 16 days ago
B
Retailer 5
-
$3,668 AUD
View
B+
Retailer 6
-
$3,736 AUD
View
Retailer 7
-
$3,988 AUD
View
Price last confirmed 15 days ago
B
Retailer 8
-
$4,017 AUD
View
B
Retailer 9
-
$4,017 AUD
View
B
Retailer 10
-
$4,148 AUD
View
B
Retailer 11
-
$4,699 AUD
View
B
Retailer 12
-
$4,781 AUD
View
B
Retailer 13
-
$6,730 AUD
View
Most Expensive
NZ Jewellers
df2d14e0-08df-4e8d-a5d8-0c24320e995a · Oct 21
$7,974 AUD
$5,479 USD
View
Price last confirmed 16 days ago
13 more retailers have this diamond
Prices start from $3,011 AUDSave up to $3,719 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
$3,011 AUD