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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6535356516

Certificate GIA 6535356516

Diamond specifications and retailer prices

From $4,247 AUD
As of November 6, 2026
Save $2,698 AUD (39%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,914 AUD at NZ Jewellers · As of October 30, 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 G 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 6535356516. Listed at 19 retailers as of November 5, 2026, with a 64% 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6535356516
Dimensions6.31 × 7.17 × 4.53 mm
L/W Ratio1.14
Top View
6.31 mm7.17 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6535356516
Side View
Table 56.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 63.1%

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: $5,763 AUD|Low: $4,209 AUD|High: $9,630 AUD|Avg: $5,878 AUD|+1.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9$4,247 AUD
Retailer 2$4,860 AUD
Retailer 8$5,008 AUD
Retailer 5$5,043 AUD
Retailer 11$5,251 AUD
Retailer 13$5,343 AUD
Retailer 6$5,359 AUD
Retailer 1$5,763 AUD
Retailer 4$5,903 AUD
Retailer 12$6,101 AUD
Retailer 3$6,108 AUD
Retailer 7$6,945 AUD
Retailer 10$9,530 AUD

44 data points across 13 retailers

19 retailers$4,247 AUD to $6,945 AUD

B+
Cheapest Retailer
-
$4,247 AUD
Retailer 2
-
$4,860 AUD
View
Price last confirmed 8 days ago
B+
Retailer 3
-
$5,008 AUD
View
B
Retailer 4
-
$5,251 AUD
View
Final sale: no returns
B
Retailer 5
-
$5,343 AUD
View
B
Retailer 6
-
$5,359 AUD
View
B
Retailer 7
-
$5,436 AUD
View
Retailer 8
-
$5,691 AUD
View
Price last confirmed 9 days ago
Retailer 9
-
$5,691 AUD
View
Price last confirmed 9 days ago
Retailer 10
-
$5,691 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$5,763 AUD
View
B
Retailer 12
-
$5,903 AUD
View
Retailer 13
-
$6,101 AUD
View
Price last confirmed 34 days ago
B
Retailer 14
-
$6,108 AUD
View
B
Retailer 15
-
$6,567 AUD
View
B
Retailer 16
-
$6,567 AUD
View
B
Retailer 17
-
$6,945 AUD
View
Retailer 18
-
$9,530 AUD
View
Price last confirmed 12 days ago
Most Expensive
NZ Jewellers
35c1ecc9-184e-4d71-b1db-0a13968a14e5 · Oct 30
$9,914 AUD
$6,812 USD
View
Price last confirmed 7 days ago
18 more retailers have this diamond
Prices start from $4,247 AUDSave up to $2,698 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
$4,247 AUD