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Heart|Natural|GIA

1.20ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1547578076

Certificate GIA 1547578076

Diamond specifications and retailer prices

From $3,055 AUD
As of November 6, 2026
Save $3,558 AUD (54%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,403 AUD at NZ Jewellers · As of September 25, 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1547578076. Listed at 13 retailers as of November 4, 2026, with a 116% 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
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Pavilion angle38.8°
OriginNatural
Grading LabGIA
CertificateGIA 1547578076
Dimensions6.42 × 7.24 × 4.30 mm
L/W Ratio1.13
Girdle conditionFaceted
Top View
6.42 mm7.24 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1547578076
Side View
Table 60.0%CrownGirdle: STK-VTKPavilion 38.8°Culet: NoneDepth 59.4%

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: $3,467 AUD|Low: $2,998 AUD|High: $7,127 AUD|Avg: $4,165 AUD|-4.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$3,055 AUD
Retailer 2$3,164 AUD
Retailer 8$3,346 AUD
Retailer 1$3,467 AUD
Retailer 3$3,583 AUD
Retailer 7$3,599 AUD
Retailer 10$3,813 AUD
Retailer 4$4,005 AUD
Retailer 5$4,205 AUD
Retailer 9$6,217 AUD
Retailer 6$6,613 AUD

37 data points across 11 retailers

13 retailers$3,055 AUD to $6,613 AUD

A
Cheapest Retailer
-
$3,055 AUD
A
Retailer 2
-
$3,164 AUD
View
Final sale: no returns
A
Retailer 3
-
$3,346 AUD
View
A
Retailer 4
-
$3,467 AUD
View
A
Retailer 5
-
$3,583 AUD
View
A
Retailer 6
-
$3,599 AUD
View
B+
Retailer 7
-
$3,813 AUD
View
B+
Retailer 8
-
$4,005 AUD
View
B+
Retailer 9
-
$4,205 AUD
View
B+
Retailer 10
-
$4,424 AUD
View
B
Retailer 11
-
$6,217 AUD
View
B
Retailer 12
-
$6,613 AUD
View
Most Expensive
NZ Jewellers
9f84c160-87e4-4933-8a65-66a4d62850b2 · Sep 25
$8,403 AUD
$5,774 USD
View
Price last confirmed 42 days ago
12 more retailers have this diamond
Prices start from $3,055 AUDSave up to $3,558 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
$3,055 AUD