CaratHunter
Plans
Heart|Natural|GIA

0.73ct I SI2 Heart Natural Diamond

EX • I/SI2 • GIA 1518663425

Certificate GIA 1518663425

Diamond specifications and retailer prices

From $927 AUD
As of November 6, 2026
Save $1,396 AUD (60%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,154 AUD at NZ Jewellers · As of October 27, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1518663425. Listed at 11 retailers as of November 2, 2026, with a 151% 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1518663425
Dimensions5.34 × 6.22 × 3.60 mm
L/W Ratio1.16
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
5.34 mm6.22 mm0.73 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1518663425
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.9%

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: $3,154 AUD|Low: $850 AUD|High: $3,154 AUD|Avg: $1,373 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 10$927 AUD
Retailer 6$1,006 AUD
Retailer 9$1,006 AUD
Retailer 7$1,045 AUD
Retailer 8$1,160 AUD
Retailer 11$1,160 AUD
Retailer 2$1,228 AUD
Retailer 4$1,332 AUD
Retailer 3$1,442 AUD
Retailer 5$2,323 AUD
NZ Jewellers$3,154 AUD

44 data points across 11 retailers

11 retailers$927 AUD to $2,323 AUD

A
Cheapest Retailer
-
$927 AUD
Final sale: no returns
Retailer 2
-
$1,006 AUD
View
Price last confirmed 12 days ago
Retailer 3
-
$1,006 AUD
View
Price last confirmed 9 days ago
Retailer 4
-
$1,045 AUD
View
Price last confirmed 13 days ago
Retailer 5
-
$1,160 AUD
View
Price last confirmed 11 days ago
B+
Retailer 6
-
$1,160 AUD
View
B+
Retailer 7
-
$1,228 AUD
View
B
Retailer 8
-
$1,332 AUD
View
B
Retailer 9
-
$1,442 AUD
View
B
Retailer 10
-
$2,323 AUD
View
Most Expensive
NZ Jewellers
7bc0502e-d0d7-4bed-b708-09cf50921488 · Oct 27
$3,154 AUD
$2,167 USD
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from $927 AUDSave up to $1,396 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
$927 AUD