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Heart|Natural|GIA

0.73ct I SI1 Heart Natural Diamond

EX • I/SI1 • GIA 5543746599

Certificate GIA 5543746599

Diamond specifications and retailer prices

From $858 AUD
HK$4,700 HKD
As of November 1, 2026
Save $1,171 AUD (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,810 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 0.73ct natural heart diamond

This 0.73ct natural heart sits in the half to three-quarter 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 5543746599. Listed at 15 retailers as of November 1, 2026, with a 136% 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

0.73
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Pavilion angle37.9°
OriginNatural
Grading LabGIA
CertificateGIA 5543746599
Dimensions5.74 × 6.43 × 3.51 mm
L/W Ratio1.12
Top View
5.74 mm6.43 mm0.73 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5543746599
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 37.9°Culet: NoneDepth 54.7%

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 1
Current: $1,331 AUD|Low: $858 AUD|High: $2,193 AUD|Avg: $1,399 AUD|-5.2%
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
November 2, 2026
Retailer 7$858 AUD
Retailer 11$1,022 AUD
Retailer 10$1,099 AUD
Retailer 9$1,117 AUD
Retailer 6$1,187 AUD
Retailer 4$1,228 AUD
Retailer 1$1,331 AUD
Retailer 13$1,384 AUD
Retailer 3$1,463 AUD
Retailer 12$1,708 AUD
Retailer 5$1,784 AUD
Retailer 2$1,784 AUD
Retailer 8$2,030 AUD

30 data points across 13 retailers

15 retailers$858 AUD to $2,030 AUD

A
Cheapest Retailer
-
$858 AUD
HK$4,700 HKD
B+
Retailer 2
-
$1,022 AUD
$716 USD
View
Final sale: no returns
B+
Retailer 3
-
$1,099 AUD
$770 USD
View
B+
Retailer 4
-
$1,117 AUD
€745 EUR
View
B+
Retailer 5
-
$1,187 AUD
$832 USD
View
Retailer 6
-
$1,228 AUD
SGD 1,163 SGD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$1,331 AUD
£735 GBP
View
B+
Retailer 8
-
$1,384 AUD
$970 USD
View
B+
Retailer 9
-
$1,463 AUD
$1,025 USD
View
B
Retailer 10
-
$1,708 AUD
ZAR 19,335 ZAR
View
B
Retailer 11
-
$1,723 AUD
View
Retailer 12
-
$1,784 AUD
View
Price last confirmed 29 days ago
Retailer 13
-
$1,784 AUD
$1,250 USD
View
Price last confirmed 10 days ago
B
Retailer 14
-
$2,030 AUD
£1,120 GBP
View
Most Expensive
NZ Jewellers
7d2e26c3-61c1-4cd7-b587-e47e85048a09 · Sep 25
$3,810 AUD
$2,670 USD
View
Price under review
14 more retailers have this diamond
Prices start from $858 AUDSave up to $1,171 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
0.73ct Heart
$858 AUD