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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 6515647551

Certificate GIA 6515647551

Diamond specifications and retailer prices

From $3,088 AUD
As of November 6, 2026
Save $4,631 AUD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,719 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 I 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 6515647551. Listed at 15 retailers as of November 5, 2026, with prices from $3,088 to $7,719, a $4,631 spread on the same certified stone. NZ Jewellers lists it at $7,719. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6515647551
Dimensions7.54 × 6.63 × 4.31 mm
L/W Ratio1.14
Top View
7.54 mm6.63 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6515647551
Side View
Table 64.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.2%

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: $7,719 AUD|Low: $3,088 AUD|High: $7,763 AUD|Avg: $4,152 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
November 7, 2026
Retailer 4$3,088 AUD
Retailer 8$3,216 AUD
Retailer 11$3,346 AUD
Retailer 5$3,363 AUD
Retailer 3$3,419 AUD
Retailer 13$3,478 AUD
Retailer 12$3,500 AUD
Retailer 9$3,582 AUD
Retailer 14$3,860 AUD
Retailer 7$3,896 AUD
Retailer 6$4,181 AUD
Retailer 10$4,506 AUD
Retailer 2$6,433 AUD
NZ Jewellers$7,719 AUD

33 data points across 14 retailers

15 retailers$3,088 AUD to $7,719 AUD

A
Cheapest Retailer
-
$3,088 AUD
Final sale: no returns
A
Retailer 2
-
$3,216 AUD
View
B+
Retailer 3
-
$3,346 AUD
View
Retailer 4
-
$3,363 AUD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$3,419 AUD
View
B+
Retailer 6
-
$3,478 AUD
View
B+
Retailer 7
-
$3,500 AUD
View
B+
Retailer 8
-
$3,548 AUD
View
B+
Retailer 9
-
$3,582 AUD
View
B+
Retailer 10
-
$3,860 AUD
View
B+
Retailer 11
-
$3,896 AUD
View
Retailer 12
-
$4,181 AUD
View
Price last confirmed 31 days ago
B+
Retailer 13
-
$4,506 AUD
View
B
Retailer 14
-
$6,433 AUD
View
Most Expensive
B
NZ Jewellers
0295613a-2162-44ef-ae4c-6b601a5228dc · Nov 5
$7,719 AUD
$5,304 USD
View
14 more retailers have this diamond
Prices start from $3,088 AUDSave up to $4,631 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
$3,088 AUD