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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • GIA 1545779961

Certificate GIA 1545779961

Diamond specifications and retailer prices

From $3,171 AUD
As of November 6, 2026
Save $5,728 AUD (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $8,900 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 I 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 1545779961. Listed at 17 retailers as of November 5, 2026, with prices from $3,171 to $8,900, a $5,728 spread on the same certified stone. NZ Jewellers lists it at $8,900. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545779961
Dimensions6.34 × 7.19 × 4.40 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.34 mm7.19 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545779961
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 61.2%

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: $8,900 AUD|Low: $3,171 AUD|High: $8,900 AUD|Avg: $4,669 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 6$3,171 AUD
Retailer 4$3,333 AUD
Retailer 13$3,857 AUD
Retailer 15$3,857 AUD
Retailer 14$4,005 AUD
Retailer 5$4,061 AUD
Retailer 2$4,129 AUD
Retailer 3$4,184 AUD
Retailer 8$4,410 AUD
Retailer 9$4,410 AUD
Retailer 16$4,449 AUD
Retailer 7$4,555 AUD
Retailer 17$4,833 AUD
Retailer 10$4,956 AUD
Retailer 11$5,196 AUD
Retailer 12$7,099 AUD
NZ Jewellers$8,900 AUD

37 data points across 17 retailers

17 retailers$3,171 AUD to $8,900 AUD

B+
Cheapest Retailer
-
$3,171 AUD
B+
Retailer 2
-
$3,333 AUD
View
B
Retailer 3
-
$3,857 AUD
View
Retailer 4
-
$3,857 AUD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$4,005 AUD
View
B
Retailer 6
-
$4,061 AUD
View
B
Retailer 7
-
$4,129 AUD
View
B
Retailer 8
-
$4,184 AUD
View
B
Retailer 9
-
$4,410 AUD
View
B
Retailer 10
-
$4,410 AUD
View
B
Retailer 11
-
$4,449 AUD
View
B
Retailer 12
-
$4,555 AUD
View
B
Retailer 13
-
$4,833 AUD
View
B
Retailer 14
-
$4,956 AUD
View
B
Retailer 15
-
$5,196 AUD
View
B
Retailer 16
-
$7,099 AUD
View
Most Expensive
C
NZ Jewellers
68941107-28b9-4f84-864d-21a79f812332 · Nov 5
$8,900 AUD
$6,115 USD
View
16 more retailers have this diamond
Prices start from $3,171 AUDSave up to $5,728 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
$3,171 AUD