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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6555455676

Certificate GIA 6555455676

Diamond specifications and retailer prices

From $3,184 AUD
As of November 6, 2026
Save $5,670 AUD (64%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $8,855 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555455676. Listed at 25 retailers as of November 5, 2026, with prices from $3,184 to $8,855, a $5,670 spread on the same certified stone. NZ Jewellers lists it at $8,855. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555455676
Dimensions6.73 × 7.43 × 4.26 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.73 mm7.43 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555455676
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.3%

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: $8,855 AUD|Low: $3,184 AUD|High: $8,904 AUD|Avg: $5,131 AUD|-0.6%
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
Retailer 18
Retailer 19
November 7, 2026
Retailer 7$3,184 AUD
Retailer 13$3,324 AUD
Retailer 18$3,759 AUD
Retailer 19$3,802 AUD
Retailer 9$3,909 AUD
Retailer 14$4,109 AUD
Retailer 3$4,235 AUD
Retailer 11$4,259 AUD
Retailer 5$4,398 AUD
Retailer 16$4,435 AUD
Retailer 8$4,442 AUD
Retailer 12$4,483 AUD
Retailer 4$4,582 AUD
Retailer 6$4,887 AUD
Retailer 15$4,929 AUD
Retailer 17$5,170 AUD
Retailer 2$7,046 AUD
Retailer 10$8,539 AUD
NZ Jewellers$8,855 AUD

23 data points across 19 retailers

25 retailers$3,184 AUD to $8,855 AUD

A
Cheapest Retailer
-
$3,184 AUD
A
Retailer 2
-
$3,324 AUD
View
B+
Retailer 3
-
$3,759 AUD
View
B+
Retailer 4
-
$3,802 AUD
View
B+
Retailer 5
-
$3,909 AUD
View
Final sale: no returns
B+
Retailer 6
-
$3,927 AUD
View
B+
Retailer 7
-
$3,992 AUD
View
B+
Retailer 8
-
$3,995 AUD
View
B+
Retailer 9
-
$4,109 AUD
View
B+
Retailer 10
-
$4,235 AUD
View
Retailer 11
-
$4,259 AUD
View
Price last confirmed 9 days ago
Retailer 12
-
$4,259 AUD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$4,398 AUD
View
B+
Retailer 14
-
$4,435 AUD
View
B+
Retailer 15
-
$4,442 AUD
View
B+
Retailer 16
-
$4,454 AUD
View
B+
Retailer 17
-
$4,483 AUD
View
B+
Retailer 18
-
$4,582 AUD
View
Retailer 19
-
$4,797 AUD
View
Price last confirmed 31 days ago
B+
Retailer 20
-
$4,887 AUD
View
B
Retailer 21
-
$4,929 AUD
View
B
Retailer 22
-
$5,170 AUD
View
B
Retailer 23
-
$7,046 AUD
View
Retailer 24
-
$8,539 AUD
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
6391fe8e-3615-4d57-b729-822588072907 · Nov 5
$8,855 AUD
$6,084 USD
View
24 more retailers have this diamond
Prices start from $3,184 AUDSave up to $5,670 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
$3,184 AUD