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Heart|Natural|GIA

1.03ct D SI2 Heart Natural Diamond

EX • D/SI2 • GIA 1553251290

Certificate GIA 1553251290

Diamond specifications and retailer prices

From $3,056 AUD
As of November 4, 2026
Save $2,729 AUD (47%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $6,923 AUD at NZ Jewellers · As of September 30, 2026
View at NZ Jewellers

About this 1.03ct natural heart diamond

This 1.03ct 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 1553251290. Listed at 10 retailers as of November 4, 2026, with a 89% 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

1.03
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553251290
Dimensions6.89 × 5.76 × 4.19 mm
L/W Ratio1.20
Culet sizeNone
Key to symbols
Feather, Crystal, Needle
Top View
6.89 mm5.76 mm1.03 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1553251290
Side View
Table 55.0%CrownGirdlePavilionCulet: NoneDepth 60.8%

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 4
Current: $4,112 AUD|Low: $2,802 AUD|High: $5,871 AUD|Avg: $3,953 AUD|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$3,056 AUD
Retailer 5$3,311 AUD
Retailer 2$3,598 AUD
Retailer 1$4,112 AUD
Retailer 3$5,785 AUD

44 data points across 5 retailers

10 retailers$3,056 AUD to $5,785 AUD

A
Cheapest Retailer
-
$3,056 AUD
Final sale: no returns
Retailer 2
-
$3,311 AUD
View
Price last confirmed 29 days ago
Retailer 3
-
$3,311 AUD
View
Price last confirmed 29 days ago
Retailer 4
-
$3,464 AUD
View
Price last confirmed 36 days ago
B+
Retailer 5
-
$3,598 AUD
View
Retailer 6
-
$3,820 AUD
View
Price last confirmed 66 days ago
Retailer 7
-
$3,820 AUD
View
Price last confirmed 38 days ago
B+
Retailer 8
-
$4,112 AUD
View
B
Retailer 9
-
$5,785 AUD
View
Most Expensive
NZ Jewellers
e02b1e4b-e303-4e8c-8b89-58fab2390e37 · Sep 30
$6,923 AUD
$4,757 USD
View
Price last confirmed 37 days ago
9 more retailers have this diamond
Prices start from $3,056 AUDSave up to $2,729 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
1.03ct Heart
$3,056 AUD