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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6545346217

Certificate GIA 6545346217

Diamond specifications and retailer prices

From $2,365 AUD
As of November 6, 2026
Save $3,078 AUD (57%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $6,932 AUD at NZ Jewellers · As of October 6, 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 6545346217. Listed at 22 retailers as of November 6, 2026, with a 130% 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
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6545346217
Dimensions6.56 × 7.55 × 4.33 mm
L/W Ratio1.15
Top View
6.56 mm7.55 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 6545346217
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $5,443 AUD|Low: $2,346 AUD|High: $5,878 AUD|Avg: $3,262 AUD|-7.4%
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
Retailer 14
November 7, 2026
Retailer 12$2,365 AUD
Retailer 8$2,497 AUD
Retailer 5$2,882 AUD
Retailer 14$2,957 AUD
Retailer 6$2,984 AUD
Retailer 2$3,005 AUD
Retailer 11$3,018 AUD
Retailer 9$3,030 AUD
Retailer 13$3,123 AUD
Retailer 3$3,275 AUD
Retailer 4$3,292 AUD
Retailer 7$3,382 AUD
Retailer 10$3,812 AUD
Retailer 1$5,443 AUD

28 data points across 14 retailers

22 retailers$2,365 AUD to $5,443 AUD

A
Cheapest Retailer
-
$2,365 AUD
A
Retailer 2
-
$2,497 AUD
View
A
Retailer 3
-
$2,882 AUD
View
Final sale: no returns
A
Retailer 4
-
$2,957 AUD
View
A
Retailer 5
-
$2,984 AUD
View
A
Retailer 6
-
$3,005 AUD
View
A
Retailer 7
-
$3,018 AUD
View
A
Retailer 8
-
$3,030 AUD
View
Retailer 9
-
$3,123 AUD
View
Price last confirmed 9 days ago
B+
Retailer 10
-
$3,232 AUD
View
A
Retailer 11
-
$3,275 AUD
View
A
Retailer 12
-
$3,292 AUD
View
Retailer 13
-
$3,315 AUD
View
Price last confirmed 26 days ago
Retailer 14
-
$3,315 AUD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$3,382 AUD
View
Retailer 16
-
$3,570 AUD
View
Price last confirmed 37 days ago
B+
Retailer 17
-
$3,649 AUD
View
B+
Retailer 18
-
$3,812 AUD
View
Retailer 19
-
$3,826 AUD
View
Price last confirmed 29 days ago
Retailer 20
-
$4,077 AUD
View
Price last confirmed 32 days ago
B
Retailer 21
-
$5,443 AUD
View
Most Expensive
NZ Jewellers
2edcbfdd-1395-45a7-afdd-932752c2ff52 · Oct 6
$6,932 AUD
$4,763 USD
View
Price last confirmed 31 days ago
21 more retailers have this diamond
Prices start from $2,365 AUDSave up to $3,078 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
$2,365 AUD