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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6552305670

Certificate GIA 6552305670

Diamond specifications and retailer prices

From $4,480 AUD
As of November 4, 2026
Save $3,874 AUD (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,727 AUD at NZ Jewellers · As of October 18, 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 6552305670. Listed at 11 retailers as of November 4, 2026, with a 86% 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 6552305670
Dimensions6.22 × 7.33 × 4.39 mm
L/W Ratio1.18
Girdle conditionFaceted
Top View
6.22 mm7.33 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552305670
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 59.8%

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 4
Current: $5,232 AUD|Low: $3,698 AUD|High: $8,970 AUD|Avg: $5,518 AUD|-3.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11$4,438 AUD
Retailer 10$4,480 AUD
Retailer 7$4,682 AUD
Retailer 8$4,977 AUD
Retailer 9$4,977 AUD
Retailer 2$5,210 AUD
Retailer 3$5,210 AUD
Retailer 1$5,232 AUD
Retailer 12$5,385 AUD
Retailer 4$5,772 AUD
Retailer 6$7,300 AUD
Retailer 5$8,354 AUD

35 data points across 12 retailers

11 retailers$4,480 AUD to $8,354 AUD

B+
Cheapest Retailer
-
$4,480 AUD
B+
Retailer 2
-
$4,682 AUD
View
B+
Retailer 3
-
$4,977 AUD
View
B+
Retailer 4
-
$4,977 AUD
View
B+
Retailer 5
-
$5,210 AUD
View
B+
Retailer 6
-
$5,210 AUD
View
B+
Retailer 7
-
$5,232 AUD
View
B
Retailer 8
-
$5,385 AUD
View
B
Retailer 9
-
$7,300 AUD
View
B
Retailer 10
-
$8,354 AUD
View
Most Expensive
NZ Jewellers
c7a55978-bc63-45bf-ae7f-3894078b182b · Oct 18
$8,727 AUD
$5,996 USD
View
Price last confirmed 20 days ago
10 more retailers have this diamond
Prices start from $4,480 AUDSave up to $3,874 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
$4,480 AUD