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Heart|Natural|GIA

0.73ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 1539878977

Certificate GIA 1539878977

Diamond specifications and retailer prices

From $1,080 AUD
As of November 6, 2026
Save $971 AUD (47%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $3,627 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1539878977. Listed at 14 retailers as of November 6, 2026, with a 90% 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
Pavilion angle38.3°
OriginNatural
Grading LabGIA
CertificateGIA 1539878977
Dimensions5.36 × 6.24 × 3.62 mm
L/W Ratio1.16
Girdle conditionFaceted
Top View
5.36 mm6.24 mm0.73 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539878977
Side View
Table 60.0%CrownGirdle: STK-VTKPavilion 38.3°Culet: NoneDepth 58.0%

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: $1,489 AUD|Low: $1,006 AUD|High: $2,755 AUD|Avg: $1,597 AUD|+5.8%
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
Retailer 14
November 6, 2026
Retailer 2$1,080 AUD
Retailer 14$1,265 AUD
Retailer 13$1,295 AUD
Retailer 10$1,297 AUD
Retailer 8$1,304 AUD
Retailer 12$1,364 AUD
Retailer 9$1,367 AUD
Retailer 1$1,489 AUD
Retailer 4$1,594 AUD
Retailer 7$1,650 AUD
Retailer 5$1,987 AUD
Retailer 6$1,997 AUD
Retailer 11$2,051 AUD
Retailer 3$2,534 AUD

37 data points across 14 retailers

14 retailers$1,080 AUD to $2,051 AUD

A
Cheapest Retailer
-
$1,080 AUD
A
Retailer 2
-
$1,265 AUD
View
Final sale: no returns
A
Retailer 3
-
$1,295 AUD
View
A
Retailer 4
-
$1,297 AUD
View
A
Retailer 5
-
$1,304 AUD
View
A
Retailer 6
-
$1,364 AUD
View
B+
Retailer 7
-
$1,367 AUD
View
B+
Retailer 8
-
$1,489 AUD
View
B+
Retailer 9
-
$1,650 AUD
View
Retailer 10
-
$1,987 AUD
View
Price last confirmed 33 days ago
Retailer 11
-
$1,997 AUD
View
Price last confirmed 33 days ago
B+
Retailer 12
-
$2,051 AUD
View
Retailer 13
-
$2,534 AUD
View
Price last confirmed 29 days ago
Most Expensive
NZ Jewellers
f861a4af-29a5-424b-b816-34a8d7a5d2a2 · Sep 25
$3,627 AUD
$2,492 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $1,080 AUDSave up to $971 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
$1,080 AUD