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Heart|Natural|GIA

1.50ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 6541674412

Certificate GIA 6541674412

Diamond specifications and retailer prices

From $4,154 AUD
As of November 6, 2026
Save $4,921 AUD (54%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $9,898 AUD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.5ct natural heart diamond

This 1.5ct natural heart sits in the one-and-a-half to two carat band, graded J 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 6541674412. Listed at 14 retailers as of November 4, 2026, with a 118% 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

1.50
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle42.1°
OriginNatural
Grading LabGIA
CertificateGIA 6541674412
Dimensions6.88 × 8.04 × 4.65 mm
L/W Ratio1.17
Top View
6.88 mm8.04 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6541674412
Side View
Table 59.0%CrownGirdle: MED-VTKPavilion 42.1°Culet: 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: $5,231 AUD|Low: $4,098 AUD|High: $9,616 AUD|Avg: $6,034 AUD|-4.2%
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 6, 2026
Retailer 13$4,154 AUD
Retailer 2$5,021 AUD
Retailer 11$5,058 AUD
Retailer 10$5,210 AUD
Retailer 1$5,231 AUD
Retailer 7$5,253 AUD
Retailer 4$5,510 AUD
Retailer 6$5,631 AUD
Retailer 5$5,999 AUD
Retailer 3$6,171 AUD
Retailer 8$6,641 AUD
Retailer 12$8,702 AUD
Retailer 9$9,074 AUD

36 data points across 13 retailers

14 retailers$4,154 AUD to $9,074 AUD

A
Cheapest Retailer
-
$4,154 AUD
A
Retailer 2
-
$5,021 AUD
View
Final sale: no returns
B+
Retailer 3
-
$5,058 AUD
View
B+
Retailer 4
-
$5,210 AUD
View
B+
Retailer 5
-
$5,231 AUD
View
B+
Retailer 6
-
$5,253 AUD
View
B+
Retailer 7
-
$5,510 AUD
View
B+
Retailer 8
-
$5,631 AUD
View
Retailer 9
-
$5,999 AUD
View
Price last confirmed 30 days ago
B+
Retailer 10
-
$6,171 AUD
View
B+
Retailer 11
-
$6,641 AUD
View
B
Retailer 12
-
$8,702 AUD
View
B
Retailer 13
-
$9,074 AUD
View
Most Expensive
NZ Jewellers
090fd14f-f327-42ad-af8c-26d56e63b63f · Sep 25
$9,898 AUD
$6,801 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $4,154 AUDSave up to $4,921 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
1.50ct Heart
$4,154 AUD