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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6422701827

Certificate GIA 6422701827

Diamond specifications and retailer prices

From $2,067 AUD
As of November 6, 2026
Save $4,187 AUD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $6,254 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 6422701827. Listed at 12 retailers as of November 5, 2026, with prices from $2,067 to $6,254, a $4,187 spread on the same certified stone. NZ Jewellers lists it at $6,254. 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
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6422701827
Dimensions6.93 × 6.41 × 4.10 mm
L/W Ratio1.08
Top View
6.93 mm6.41 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6422701827
Side View
Table 57.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 59.2%

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: $6,254 AUD|Low: $1,899 AUD|High: $6,300 AUD|Avg: $3,097 AUD|-0.7%
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 7, 2026
Retailer 6$2,067 AUD
Retailer 11$2,358 AUD
Retailer 4$2,366 AUD
Retailer 7$2,487 AUD
Retailer 3$2,564 AUD
Retailer 10$2,682 AUD
Retailer 5$2,864 AUD
Retailer 9$2,882 AUD
Retailer 12$2,959 AUD
Retailer 8$3,481 AUD
Retailer 2$4,468 AUD
NZ Jewellers$6,254 AUD

33 data points across 12 retailers

12 retailers$2,067 AUD to $6,254 AUD

A
Cheapest Retailer
-
$2,067 AUD
A
Retailer 2
-
$2,358 AUD
View
A
Retailer 3
-
$2,366 AUD
View
Final sale: no returns
A
Retailer 4
-
$2,487 AUD
View
A
Retailer 5
-
$2,564 AUD
View
A
Retailer 6
-
$2,682 AUD
View
A
Retailer 7
-
$2,864 AUD
View
B+
Retailer 8
-
$2,882 AUD
View
B+
Retailer 9
-
$2,959 AUD
View
B+
Retailer 10
-
$3,481 AUD
View
B+
Retailer 11
-
$4,468 AUD
View
Most Expensive
B
NZ Jewellers
39e87a42-5e5f-4e0f-b712-0a3b21b70841 · Nov 5
$6,254 AUD
$4,297 USD
View
11 more retailers have this diamond
Prices start from $2,067 AUDSave up to $4,187 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